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How to install exhaust donut gasket

Not aware of any gasket or donut for there - when installed properly, those tapered flange joints usually don't leak. 50 (5 offers) - Buy Federal Mogul 15020729 15170285 Exhaust Flange Donut Gasket Pipe Manifold . From experience factory OEM, and actually regular ones too, gaskets are rigid and imposible to compress but the Corksport donut gasket is different will it compress when torque is applied to the flange nuts? Then I saw this picture from the Cobb installation and I no longer know anything (because "it was a good installation", wtf! The exhaust gasket, or "donut", was made by Walker, I believe PN 31533. Fiber and Metal Laminate Donut Exhaust Pipe Flange Gasket (31354) by Walker®. com forums. Finally! An exhaust gasket that really works! 100% graphite construction means Remflex gaskets can take the heat-up to 3,000º F! A built-in 50% crush allows Remflex gaskets to fill gaps in headers or exhaust manifolds up to 1/16-inch inch. When I re-assemble the engine, i'm concerned the flanges on the exhaust manifolds themselves (not on the heads) may be slightly distorted for flatness, so I was thinking about installing this high temp RTV IN ADDITION (both sides) to the new gasket. The passenger side manifold required a donut gasket between the manifold and the exhaust down pipe. I have a tick in my exhaust so I bought 2 new donut gaskets,when I tried to install the gasket it was took big my question does the 351C even have a donut gasket when I took the passenger side off it did not have a gasket at all should the studs be longer to fit the bigger donut? 2001 subaru forester exhaust bolt and spring install, 2013 subaru wrx exhaust spring bolts, are exhaust system spring bolts needed, do all exhaust spring bolts need a donut gasket, do i need an exhaust bolt and spring, exhaust donut 73mm, how do exhaust spring bolts work, long bolt for donut gasket, what are spring bolts on exhaust called, wrx Toyota Part: Exhaust Manifold (Donut) Gasket (2ZZ) 17451-0D040 Listed as for Toyota Celica 03-05 (2ZZ) MWR stock these gaskets. Excessively noisy engine. 3L Power Stroke Up-pipe Gasket Replacement Procedures How to Replace the Up-pipe Donut Gaskets on a 7. 30. Some front pipe gaskets are called "donut" gaskets and fit into a ball-flared exhaust pipe. Discover the best Automotive Replacement Exhaust Flange & Exhaust Donut Gaskets in Best Sellers. To replace a catalytic converter, start by jacking the car up so that you can work underneath it. The pipe was cut back further to make custom duals, and I dont want to have to remove it and cut and weld to straighten it as it is only a slight leak when Place the gasket between the flanges. 3) Exhaust Repositioning:--unbolt the 4 muffler bolts (12mm socket) and the 2 front muffler cover bolts (10mm socket)-- remove the black rubber tunnel plugs to expose the 2 front exhaust hanger bolts. 3L Power Stroke can be caused by a number of problems, including a leak on the compressor side of the turbo plumbing, a leak on the exhaust side of the turbo, or a combination of both. com/66OG This video demonstrates how to install exhaust flange gasket on a 1995 Jeep Grand Cherokee. Install the upper portion of the heat shield with the last two 10mm bolts and, working again from the middle out, torque all 10mm manifold bolts to 200 inch pounds. 50 + price of gasket/bolts to do your exhaust manifold gasket. These go naturally over time and it easier to replace than the pipe. Wondering if anyone has run into the same issue with an exhaust leak when using the URD Y-Pipe and the TRD Cat Back Exhaust. Before I dig in, are there any tips/tricks/things to know particular to the 4. Take the exhaust apart at the collector , this is where the gasket is. Is there a donut gasket between my manifold and my exhaust pipe or is it just the flange and flare? i know the bolts are missing on each side and i am going to replace them i wanted to know if there is a gasket inbetween before i put new bolts in there Figure 6 - Assemble and torque the driver's side pipe. It only leaks from one side and at first it leaked from below the pipe but after flipping the gasket and re-tightening it now leaks from above. com, will give you a whole bunch of great deals with our featured items! 30. This will also be helpful if you have to remove the front pipe at some later date. Hello, the gasket needs replacing, there are two bolt/studs at the head, I remove the bolts, then donut heavy metal thing, the thin circle thing, pull off the exhuast pipe, and what should I see in the head hole ? just a round gasket ? or do I need to access the gasket from the inside ? does that gasket need to be oiled ? thank you. Uncover the suitable kind of goods and brand that you required for gasket donut seal for. Perhaps that is the only reason the donut seal has a metal side (for those other applications). I've had the tapered flange crack loose from where the flange starts at the pipe, and also have had the nuts bottom out before the pipe was actually tight. You can probably create your own spring bolts from stuff from the hardware store. It is designed with a bevel on both sides of the gasket and a smooth, flat inner surface. 25", 2. When tightening new manifold bolts, be sure to start tightening bolts in the middle and then work your way to the left and right (illustration below). Once that's done, if the gasket is a flat donut gasket apply some red high temp sealant (had to be exhaust specific) to both sides prior to seating against flange. 1994-2003 7. AutoZone only lists one size donut gasket and one flange gasket (with two different brands/price points) so you should get the correct ones the first try, unless Advance lists more than one size. I've read in some posts that a gasket shouldn't be used on these engines, or that a metal gasket should be used - is this true in my case? 3) Assuming a gasket is necessary, I'm leaning toward a solid metal type such as copper. after getting on the trail the noise disappears after the exhaust has expanded. These gaskets are called "exhaust flange gaskets" and they seal the primary pipe to the exhaust manifold on a Land Rover Discovery 1 (1989-1998). a random stranger tonight told me my exhaust leak was likely the "doughnut" gasket that connects the exhaust manifold to the cat. Got an exhaust flange leak on one side. 3L Power Stroke Diesel. View Wall Chart Walker Exhaust hardware and hangers provide OE-style features and design for greater durability for longer service life. 7 WJ. 4L - Workhorse Parts Part# 15170285 Description: Brand New Workhorse Exhaust Manifold Donut Seal. Welcome to the Exhaust Flange & Exhaust Donut Store, where you'll find great prices on a wide range of exhaust flange & exhaust donut for your vehicle. 2003-2006 Evolution Exhaust Flange & Exhaust Donut. How-To: Install Longtube Headers 1999-2004 SVT Lightning By Darren5. Any tips? Thanks. 00 to $149. You may also need to buy a donut gasket for the civic/integra header. this allows the y pipes and muffler to move slightly reducing the wear on the donut gaskets. So i need to fix the leak between the exhaust manifold and where it connects to the pipe. Engine - Removing Donut gasket between Exhaust Manifold and rest of the Exhaust discussion at the Automotive. its a seal on the piping to seal at the collector , it may be hard to c it cause it will be dirty n greasy and could look like a solid piece of the exhaust , but its a donut shaped ring that slides over the end of the pipe. Got both donut gaskets to replace. This article explains the necessary steps to replace both the exhaust Y-pipe gaskets and variable exhaust valve gaskets — both can leak — to improve the appearance of the sled and increase its value. The issue is there is an exhaust leak that I can't seem to fix. Then start to dismount the exhaust pipe from the manifold (three bolts, 15 mm). Man what a pain. which one do i use? they dont appear to work together and the shop manual was no help. Guaranteed lowest price! These gaskets are called "exhaust flange gaskets" and they seal the primary pipe to the exhaust manifold on a Land Rover Discovery 1 (1989-1998). Depending on the make, model and year of the vehicle, other large mechanical systems may also need to be removed in order to gain access to this part. The exhuast from the catalytic convertor back is also shot. First buy the right gaskets. I have a 1994 Chevy Cheyenne 1500 pickup truck with a "Y" split exhaust that had an exhaust leak coming from the right side of the car where the pipe connects to the manifold and there is an exhaust donut which makes a seal between the pipe and manifold the donut has been torn and rotted away so it is in need of replacing any idea on how to do it? Find CHEVROLET 5. The generic stuff I get from napa always has bolts that are too short so I end up using vicegrips to compress the springs to get the nut started. it seems like a bit of a ridiculous name for it (slang maybe?) is there a technical term for it that i can use to go into my local NAPA and get the correct part to fix my leak? Exhaust “donut” gaskets don’t exactly live the sweet life. Bought to install with a Cobb turbo back, slips right over the downpipe and the taper on the midpipe sealed up great. A donut gasket is the gasket that goes from your front pipe to your manifold. how do I know it works. A low boost condition on the 7. 2. Advice? By the way, the studs have a spring under the nuts. You either need to have a muffler company weld a new flange on your downpipe, buy a new aftermarket downpipe, or try the gasket idea. 5" and 3" donut gasket. All the listings I find show an obsolete part. Soaked the studs good, then tried a wrench on them. 2) The present installation has a conventional head-to-manifild gasket. It is 3 inches ID about 3. I'm familiar with a "donut" type asbestos gasket on your older chevy's which seal the cast manifold to the exhaust pipe. In addition we had to hit the local hardware store and pick up some 1-1/2″ bolts to replace the rusted ones that hold the parts together at the flanges. BTW I'd charge $307. Include exhaust clamps and hardware for a safe and secure installation. If your exhaust requires reuse of your doughnut gasket, buy this $17. like joat was saying, which gasket are you trying to replace (header, downpipe, mid pipe, muffler part etc etc there could be a ton of them in the exhaust)? and like i said, did you try over on newcelica asking boosted2. The pipe was cut back further to make custom duals, and I dont want to have to remove it and cut and weld to straighten it as it is only a slight leak when Lisle make a tool, but most exhaust hangers can be removed by using a long screw driver or channel lock pliers can used to remove the exhaust hangers, I like to spray some silicon spray on them to make installation easier when refitting them. On smaller Swapping out your factory exhaust flange gasket for a high-quality replacement from AutoZone can considerably increase your pick-up's performance. This gasket is often used to prevent exhaust leaks between the cast-iron exhaust manifold and the exhaust pipe of an automobile or truck. Therefore, I just used a flat gasket on the install and didn't think twice about it. 00 is nothing compared to the headache of a whistling exhaust leak. I fixed a right side manifold leak on my 1988 Chieftan 454 about 6 months ago. If you go into a auto part store you can say the donut gasket or you can ask for the front gasket that connect the front pipe to the manifold both are acceptable. a. Plus gaskets and new bolts . 75 Inch OD. The iron doughnut was available from Felpro - don't use a composition one. Brand new OEM Mitsubishi gasket works with the stock downpipe or any aftermarket pipe that uses a donut gasket. Squeezed like cream filling between the single hottest part of your engine and the heavy exhaust system that follows, the donut gasket is subject to a remarkable amount of stress, hardening and degradation over time. I put some exhaust sealant on the broken gaskets to "glue it" back to the one solid gasket piece and reinstalled it. Provided that the repair is gas-tight and not on a load-bearing part of the exhaust - perhaps where it is attached to the chassis - it is allowable for the MOT test. Loosen two bolts on exhaust manifold and replace donut If it's an 8-valve, then it's probable that the exhaust header has burnt through where it transitions from vertical to horizontal just before I had to put it back together because I needed to drive it. they consist of an exhaust header or manifold which is the part directly after the engine which may or may not include the downpipe which is usually followed by the ca Is there a donut gasket between my manifold and my exhaust pipe or is it just the flange and flare? i know the bolts are missing on each side and i am going to replace them i wanted to know if there is a gasket inbetween before i put new bolts in there Figure 6 - Assemble and torque the driver's side pipe. 8. Find the top 100 most popular items in Amazon Automotive Best Sellers. I think I'm gonnna replace both sides, and want to do it right. Replace those old pipe flange gaskets with Fel-Pro Replacement Exhaust Pipe Flange Gaskets. Exhaust leaks at the head will erode the mating surfaces, and then you must use a gasket. A leaking exhaust manifold gasket can cause a burned exhaust valve, which can cause exhaust from the combustion chamber to flow the wrong way into the the intake manifold. how to install exhaust donut gasket The OEM Helm document say replace it (along with 10 million other stuff like locking nut or fasteners), but most people I know have reused them with no ill effect. Plus I would only give that rate if you also removed the intake manifold for 180$ to 200$ depending on condition of bolts. --replace the gas cap then lift the rear of the tank over the mounting studs and slide it back. When got the right spare parts put your car securely on jack stands. com. I tightened the flange all the way around and it still leaks. This smooth surface of the shiny side will allow the flange of the exhaust manifold to slide as it expands and contracts during heat cycling from Engine Rebuild Part 10 - Installing Exhaust Manifolds May Also Apply To Chevy / GMC Note the orientation of the exhaust gasket, sometimes called a "donut". For reference, TOG uses a stock GM part for their header collector gaskets. This generic 3-inch donut gasket fits a range of aftermarket donut gasket fixtures. Hi all, I have a 98 Corolla auto with 56k miles (but Boston winters). I have had problems with mine leaking. Manufactured from high quality steel core laminate. Dismount the front wheel and the protection apron. You can reuse this or pick up a new one for about $20. When installing Fel-Pro exhaust manifold gaskets, if there is a smooth, metallic side and a composite side, the metallic side should be installed facing out, meaning toward the exhaust manifold. This is the seal between the exhaust manifold and down pipe. The local Toyota dealership says I need to replace my donut gasket, and that its not an expensive part, but the labor is over $200 due to where it is on the car. My real concern is the spring bolts because I am driving 45 minutes away while my kid is in school, and the guy is doing the repair and I would hate for him to get the exhaust off and not be able to put it back on. Im changing my exhaust manifolds and the new ones came with a thin gasket and a donut gasket. >Replacement Exhaust Pipe Yamaha rear exiting exhaust models include: RX1, Venture, Apex, Nytro, Attack, Vector, Phazer, Rage and VK Professional. 7L/350 Exhaust Flange and Donut Gaskets and get Free Shipping on Orders Over $99 at Summit Racing! Anyone install an exhaust manifold doughnut gasket? They have those solid flares there, I do not believe there is supposed to be a gasket, but mine leaks slightly no matter what I do to it. Yamaha rear exiting exhaust models include: RX1, Venture, Apex, Nytro, Attack, Vector, Phazer, Rage and VK Professional. Place the supplied “donut” gasket on the header flange. I bet your car or truck has something similar to them. Hello, I need to replace the donut gaskets off the exhaust manifolds of my 4. So, time for a new exhaust system. Find FORD Exhaust Flange and Donut Gaskets and get Free Shipping on Orders Over $99 at Summit Racing! Trying to get my manifolds back on I see that the old donut gasket seems to be fused to the exhaust pipe. Here's the story. On every Honda that I have done, the gasket between the head and exhaust manifold is metal. Then I started to see threads about the SPT exhaust using the donut gasket. A sound exhaust allows optimum engine performance and so saves fuel. Part of the idea behind a doughnut gasket is it allows a certain amount of flex, which wouldn't work without springs. No go. 1 liter Vortec is the same, whether it is a Chevrolet product or a Workhorse product? When I called Workhorse I was given a Part # 15020729 for the gasket. I am ready to install the new manifold and have a couple of questions for those that have done exhaust work on the 454's. 1. I have the flange gasket but the two bolts hold the two together are rusted as all get out, and I cant find a good way to get a socket on them AND get leverage to break them free. I hear a slight rattling noise when the machine first starts up. Some exhaust pipes have a conical flange welded to the pipe about a half-inch down from the upper end which supports the bottom of the donut that then slips over the pipe. If it's a thick gasket that's shaped to fit against the flange, use some black exhaust sealant against the cat side. This also works if you are starting from scratch with the system and can find or fabricate the parts. http://dapalan. the studs look quite likely to snap. I also enlarged the two holes that hold the muffler to the tunnel. What are they for? I have a 1975 Ford LN880 truck with a 477 Gas engine. There was nothing there when i got the truck so the swap and replace method didnt help me here. and if you need to replace the springs: Compression Spring manifold to downpipe (2ZZ) 90501-35037 These springs are used on other Toyota models. Steve, you're correct, as usual. gaskets for installing spt exhaust, spt cbe, spt donut gasket, spt exhaust gasket kit, spt exhaust install, spt exhaust install instructions, spt exhaust need gaskets, If you do, the exhaust pipe may not seal properly to the bottom of the exhaust manifold. The donut gasket seems to be way too thick. Shop the industry's largest selection of Exhaust Header & Collector Gaskets at Jegs. Engine Rebuild Part 10 - Installing Exhaust Manifolds May Also Apply To Chevy / GMC Note the orientation of the exhaust gasket, sometimes called a "donut". MG MGB Technical Exhaust Donuts BBS discussion. An exhaust flange gasket is a round gasket that is commonly called a donut gasket. Exhaustsystemsatv. For Makes: Gm, Truck When I pulled this engine, there seemed to be a thin gasket like material between the pipe and the manifold where they connect. to the catalytic convertor on my 97 Sahara. I need to replace the exhaust donut at the manifold to exhaust pipe. I don't want to risk that puttering leak like before, once I install this thing. Gasket or no gasket when replacing? I have seen several post where gaskets were used with success and a few that say Chevy recommends no gasket. It is also a good idea to use new exhaust studs and brass nuts on each exhaust manifold. The current donut gasket doesn't seem to be large enough. For Models: V8 . I have a 95 Winnebago RV with the Chevy P30 chassis 454 Vortec gas engine. It is not a triangle-shaped gasket with three holes for flange bolts. TURBO XS DONUT GASKET Turbo XS "Donut" Gasket for Evo VIII-IX. It was not easy! One of the manifold bolts broke off and I could not remove it without taking out the right head. gasket donut seal for. The heat fused everything down there. If you run stock manifolds that use a donut, get this type if you have to replace your donut gaskets. I bought an SPT exhaust 4-5 months ago, and the donut gasket from the stock midpipe didn't even come close to fitting into the catback. I've been spraying gasket remover down there and scraping but it's still on pretty good. I just purchased a 2003 700 sportsman, it sound like the exhaust donut is shot, it gets louder and louder evertime i drive it, is it ok to ride the 700 twin exhaust donut - ATV Forum - All Terrain Vehicle discussion for Honda, Yamaha and more ATVs Reviving the thread to ask if these donut gaskets require some silicone to seal them properly? My driver side donut is leaking, and I took the old one out finding silicone on the factory ring. The OEM gasket is a round circle with a hole in the middle (aka donut). Re: Donut Gasket Post by nugget68 » Thu Dec 24, 2009 3:04 pm 99 extended cab, has dual exhaust, not true duals but one muffler with two outlets. 15170285 - Exhaust Donut Seal/gasket 7. Place the gasket between the flanges. Usually a bad or failing exhaust manifold gasket will produce a few symptoms that can alert the driver of a potential issue. Exhaust “donut” gaskets don’t exactly live the sweet life. In the exhaust system on cars their are seperate peices, usually three or four. Some other cars (notably transverse engine front wheel drive) have a flexible joint here, in which case the metal side goes against the exhaust pipe to tolerate the motion. The second photo is the Fel-Pro sintered metal donut gasket. Wondering if anyone has a part number or best place to purchase a new gasket. Also known as a donut, an exhaust flange gasket seals the area where the exhaust pipe is attached to manifolds made out of cast iron on custom and performance vehicles to reduce weight and increase the car's performance. Do you know where I can purchase this donut? The 534 Gas engine should use the same exhaust. Funny thing is that there werent any donut gaskets in it originally unless there gone somehow. black streaks, cracking, etc Place the engine-to-header gasket on the car (the convex side of the gasket is faced to the exhaust manifold side). 2002 6. You need to have the gasket between the engine and annother one between the manifold and exhaust pipe. The exhaust gasket, or "donut", was made by Walker, I believe PN 31533. On most flange connections, there's a small piece of pipe protruding on the inside of the flange to place the gasket on, depending on the type of application. Reviving the thread to ask if these donut gaskets require some silicone to seal them properly? My driver side donut is leaking, and I took the old one out finding silicone on the factory ring. How to Install an Exhaust System. Note: To replace an exhaust manifold gasket, you will need to remove the exhaust manifold first. as far as it running ok, it runs fine. FastWRX. I bought a intake/exhaust gasket kit for my late 50s 235 and it came with a flat gasket and a donut gasket. Order a Donut Type Exhaust Manifold Gasket for your 1965-1973 Mustang with a Small Block Engine or your 1968-1973 Mustang with a 6-Cylinder Engine from CJ Pony Parts! It creates a seal between the exhaust manifold flange and the intermediate exhaust pipe. From experience factory OEM, and actually regular ones too, gaskets are rigid and imposible to compress but the Corksport donut gasket is different will it compress when torque is applied to the flange nuts? Then I saw this picture from the Cobb installation and I no longer know anything (because "it was a good installation", wtf! Hi guys, could anyone tell me the part number of the donut gasket between stock exhaust and cat-pipe and where I could get one cheapest? Thanks in advance and best regards $20. When i just snug up the studs there is about a 1/2 inch gap between manifod and pipe flanges. There are also offered numerous kinds of items sold by a great deal of relied on sellers. Upgrade your ride with aftermarket exhaust fabrication parts and tools from K Series Parts. This will also help to make the installation so much easier. Fit a new part as soon as possible. Removing a pipe often destroys one of the donut surfaces preventing reuse. 0 (if its the header gasket) he has tons as he ports headers. Our Braided Exhaust Flex Pipe rear exhaust donut fix has been designed to fit both inside and outside of the pipes so there is no interruption of exhaust flow. how to install exhaust donut gasket. Older vehicles use asbestos gaskets, so those concerned about health and safety What is the Exhaust Pipe Flange (Donut) Gasket all about? Your exhaust system runs from the exhaust manifold to the tailpipe. A small piece of tape or silicone sealant may be used to hold the gasket in place during installation. I have had no luck finding this donut gasket. Getting things apart was a cow and now putting it back together is one too. They are approx 40mm long. 7 WJ's donut gaskets? The composition doughnut gasket was replaced by an iron "gasket", and later manifolds had the sealing surface cast-in. I tried to buy a new gasket and had the same issue. An exhaust manifold leak can be very damaging to your engine if it's not taken care of in a timely manner. 7. Install new exhaust manifold in reverse order of the steps listed above. And keep the shoulder bolts and springs. com is your source for high-quality Subaru donut gaskets. of failure, i. Can anyone tell me if the manifold to exhaust gasket (donut) for the 8. This particular gasket has one side bevelled to fit into the downpipe, and the other side has the metal retaining flange that fits into the TOG header. 05: Install the heat riser and donut on the front Y-Pipe and loosely mount it into place. But, when you want the real power rumble, a few pipes, a muffler and some exhaust tips aren’t going to cut it—it’s time to install some headers. Looking to put some real bark in your mean machine’s bite? The easiest and most popular way is with a cat back exhaust system from Flowmaster or Magnaflow. If you do not know how to install a car exhaust system this article will provide guidance on to do the removal and installation from the catalytic converter back or from the rear axle back. It slips over the protruding end of the exhaust pipe and is sandwiched between the pipe flange and the exhaust manifold flange. This procedure is the same for Civics/Integras and Preludes. I had to put it back together because I needed to drive it. It was made of a composite material of some sort, about 1/2" thick, flat on the side that fits on the exhaust manifold with a indented fitting ridge, and domed on the other side for bolting on the down pipe. It is made in several different pieces through various arrangements depending on your vehicle model. It's a specially designed composite gasket, that can endure the pressure and heat of the exhaust system. e. 6) Install the up-pipes to the exhaust manifolds, DO NOT torque the manifold flange bolts just yet (Figure 7). I have a 1994 Chevy Cheyenne 1500 pickup truck with a "Y" split exhaust that had an exhaust leak coming from the right side of the car where the pipe connects to the manifold and there is an exhaust donut which makes a seal between the pipe and manifold the donut has been torn and rotted away so it is in need of replacing any idea on how to do it? The gasket between the exhaust manifold and the exhaust headpipe is often called a "donut". I was wondering if anybody has any good tricks or techniques for easily removing/replacing the exhaust "donuts" (gaskets) that are used to connect flanged exhaust components together? Mine are the old style and essentially weld themselves over time to the flanges. Sold each. Anyone install an exhaust manifold doughnut gasket? They have those solid flares there, I do not believe there is supposed to be a gasket, but mine leaks slightly no matter what I do to it. I haven't had my exhaust manifold disconnected from my stainless exhaust system in over 20 years. Exhaust Flange & Exhaust Donut. Then, locate the catalytic converter at the center of your exhaust system and remove the oxygen sensor with a ratchet wrench. Remove the tank and place it to the side. Visit our website to see our extensive live inventory. Torque values and bolting sequence when installing new manifold? Fiber and Metal Laminate Donut Exhaust Pipe Flange Gasket (31354) by Walker®. The flanges on the downpipe and exhaust are different, that's why the donut is leaking. If the leak is really bad, it can cause engine damage. That donut gasket between the exhaust header and the CAT converter, the one that looks like a half cut donut and is sandwich together by 2 spring loaded bolt. I've found it depends what gasket and/or spring bolt kit I use. Don't forget the stainless steel gasket goes between the flange adapter and y-collector. When it's time to replace your exhaust flange gasket, AutoZone has everything you need to make your next upgrade a success. Exhaust "donut" gaskets don't exactly live the sweet life. IIRC, GM makes a 2. This is to prevent gasket from kinking and causing an exhaust leak or cracking the gasket. 0L Performance and Sound: Two very good reasons why any Lightning or HD owner might consider pulling the factory manifolds to swap in a set of longtube headers. 2003-2006 Evolution VIII & IX. Next, unscrew the bolts at the back of the converter, followed by the ones at the front, and remove it from the car. Snug the bolts up nice and tight and torque to 30 foot lbs. Thanks for commenting, It seems the donut gasket is commonly available at all the local stores for 10 bucks. I'm still getting a loud exhaust sound from the engine bay and confirmed that there is no leak or sound coming from the donut gasket anymore. I tried to order it on-line from a Workhorse parts store and that number was "Not a Valid Number". 0 2500hd. Walker Exhaust gaskets are manufactured to work seamlessly with all Walker aftermarket replacement parts, making installation quick and easy. I thought since the oem donuts had silicone I may need to put some on the new ones. Walker Exhaust 31354 Hardware-Gasket Walker Exhaust 46739 Resonator Assembly Walker Exhaust 31397 Hardware-Gasket Walker Exhaust 55001 Muffler Assembly-Quiet-FlowSS. GSI-TRM: OEM MITSUBISHI DOWNPIPE O2 DONUT GASKET If you're switching downpipes, you're going to want this donut gasket. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. I've ordered the Banks Stinger Cat-Back system and purchased the donut gasket from my local Jeep dealer. 3L Powerstroke Up-Pipe Donut gasket pair, part F4TZ-6K854-C. The composition doughnut gasket was replaced by an iron "gasket", and later manifolds had the sealing surface cast-in

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