Ej25 head gasket. This technology outperforms conventional fire ring solutions. Mar 20, 2007 · EJ25 SOHC Torque Specs? Normally Aspirated with bolt-on Forced Induction Powertrain The gaskets include a proprietary four step coating process after embossing which features a silicone coat for improved sealing properties. 5 Problems? The EJ25 2. Older EJ25 model head gaskets (EJ251 and EJ253 models) leak outside (oil/coolant leaks) or inside (into the combustion chamber). I am getting confused about the torque specs and sequence. The IAG Performance 2. Legacy, Impreza, Forester, Outback. STI gaskets are fully interchangeable onto the SOHC non-turbo EJ25 and are the heavy duty multi-layer steel gaskets that come from the high performance EJ257 found in the Impreza WRX STI. State of the art processes such as in-line laser cutting and multi-stage embossing technologies are utilized to ensure the highest level of quality available. The first time was around 99,000 miles, currently have 168,000. Sep 26, 2014 · EJ25 SOHC variants are pretty plentiful to round up another, especially in present day when there are rusted out bodies and engines that have already had their head gaskets done. THIS HEAD IS A VVT CYLINDER HEAD. Jun 19, 2024 · For the generation of N/A EJ25 that came in almost every car Subaru produced between the years of 1999 to 2010 (Forester-wise, this is accurate), Subaru used a single layer, graphite-coated head gasket. 032 Bore Shape: Round Bore Size (MM): 101 # of layers: 3 Orientation: None Stock Code: C4578-032 UPC: 191070022167 More Details $85. 5L 16V 06-11: Head Gasket Sets - Amazon. 0mm Thick MLS Head Gasket (101. to/3cr1sYMmore Mar 14, 2025 · Subaru Head Gasket Woes: What Every Owner Needs to Know The Truth About Subaru Head Gasket Failures and How to Fix Them If you own a Subaru with the EJ25 engine, chances are you’ve either heard of or experienced the dreaded Subaru head gasket failure. The embossments act as springs that can help maintain a seal even if the head lifts slightly. Silicon-based beading is applied on critic Oct 3, 2020 · Ej25 sohc 2000 ob head gasket By nicksubaru, October 3, 2020 in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX Jan 15, 2015 · Hello. Mar 22, 2025 · Buy EJ25 Engine Rebuild Kit & Cylinder Head Gasket Set with Head Bolts and Water Pump Fit for Subaru Forester Impreza 2. 3mm, . If it isn't currently blown, how can I tell if the head gasket HAS already been changed? Jul 19, 2022 · About this item After years of research and development testing, the IAG Fire-Lock head gasket is the newest solution to preventing head gasket failure on high horsepower and high boost EJ25 engines. The engine is on an engine stand so it's a joy to work on. Do yourself a favor and order the MLS head gasket for the turbo engine. I have seen everywhere the 22ft-lb; 51ft-lb; 180*back; 180*back Athena Reinforced Head Gasket Main application (s) : Subaru WRX / STI 2. 5L 100mm Bore . 5L 2458CC H4 GAS SOHC Naturally Engine Cylinder Head Gasket Set with Bolts Compatible with 2001-2004 Legacy Subaru Baja 2003-2006 for Subaru Forester 1999-2011 EJ253 EJ25 EJ251 HGS715 HS26170PT1 Aug 30, 2020 · About this item NEW HEAD GASKET SET (FITS 2. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and 1. 5L SOHC 16 Valves EJ25) Package Includes: Graphite head gasket, Intake manifold gasket, Exhaust manifold gasket, Valve cover gasket, Viton valve stem seals, Camshaft seals, O-rings, Other small gaskets, Gasket silicone sealant, Timing cover gasket. TEZAU always focus on learning the most advanced technology and management and cooperates with some scientific institutes. 25 No machining required to use these head gaskets. 039in thickness and the gaskets are sold individually. 5L SOHC EJ25. See if you qualify at checkout. com, and wondered about the quality of head gasket sets. Only), 1999-2011 Impreza (Non-Turbo) 1999-2010 May 23, 2018 · DOHC EJ25 Head Gasket Replacement Factory 2. The problem is I've found that cometic makes half a dozen different thicknesses of gaskets. com FREE DELIVERY possible on eligible purchases Sep 23, 2017 · Head Gasket for EJ253? Normally Aspirated PowertrainWelcome to the . | Download free 3D printable STL models Jan 25, 2010 · The head gasket set for an EJ25 DOHC motor that Fox purchased had National seals for the cams, and a Fuji tag on the actual head gaskets. May 24, 2009 · Buying a "cheap" motor that is a particularly problematic motor usually isn't a great move. Also replace the head studs, timing belt, water pump and idler pulleys while you’re in there. 2mm/ . 5L 2458CC H4 GAS SOHC Naturally Engine Cylinder Head Gasket Set with Bolts Compatible with 2001-2004 Legacy Subaru Baja 2003-2006 for Subaru Forester 1999-2011 EJ253 EJ25 EJ251 HGS715 HS26170PT1 Apr 2, 2015 · I have a 2002 Outback with the EJ25 SOHC Motor that needs gaskets. I came upon an interesting blog site Oct 15, 2014 · Tom and Ray the Car Talk guys recently took a slap at Subaru reliability, citing (among other things) the prospect of head gasket failure. Valve cover and spark plug gaskets too. 5mm - EJ25. By joining our community, , you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features 1. Dealer's current part number is the 11044AA633 gasket but from the description, it appears to be a single layer gasket with a coating. Silicon-based beading is applied on critic Oct 3, 2020 · Ej25 sohc 2000 ob head gasket By nicksubaru, October 3, 2020 in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX JE Pro Seal 101. Head gasket damage resulting in external leak For these Subaru head gaskets, there are many factors that cause leaking, but most experience a combination of these issues. 5L SOHC EJ25 ES72212 HS26170PT-1 Jan 25, 2010 · The head gasket set for an EJ25 DOHC motor that Fox purchased had National seals for the cams, and a Fuji tag on the actual head gaskets. Price is per gasket. Good news is if you're installing new head gaskets then you really don't have much of a head gasket problem to worry about, just be sure to use Subaru head gaskets. All JE Pro Seal Head gaskets are made from only the best raw materials available including AISI 304 Stainless Steel. Before I re Apr 7, 2016 · Your kit will include oem sealed items. Why SEAL the deal with a set of GrimmSpeed EJ25 Head Gaskets! GrimmSpeed has set the standard for quality when it comes to aftermarket replacement gaskets so it’s only natural that we should offer our fans the MOST important gaskets their car will ever need: Introducing The GrimmSpeed EJ25 and FA20 Head Gasket Sets! Feature-packed, these gaskets are a perfect fit for any engine build, from Nov 27, 2003 · First: sorry for the long post. If it isn't currently blown, how can I tell if the head gasket HAS already been changed? Head Gasket Subaru EJ25D, EJ251, EJ252, EJ253/EJ255 Version 1, 2004-2006 EJ257 . Any triple layer metal gasket. Oct 20, 2017 · ej25 head bolt torque pattern/head gasket Newbies & FAQs Gasket thickness is 1. For high horsepower applications, engine performance can be significantly improved by using these Cooper Ring gaskets that are supplied with INOX steel rings. This multi-layer steel gasket with a proprietary coating provides superior performance under extreme boost and cylinder pressures. 5L SOHC CYLINDER HEADS (06-11) Remanufactured Subaru Cylinder Heads. SOLD AS A PAIR. Welcome to Episode #2 on our 2001 Subaru Forester Project Series. What are the Most Common Subaru 2. See the photo below: a tight engine compartment that makes head removal "difficult" according to the Haynes manual Head Gasket Subaru EJ25D, EJ251, EJ252, EJ253/EJ255 Version 1, 2004-2006 EJ257 . I have a whole bunch of questions, I'll try to split them up logically. 5 x 7. 3 mm bore size (Same size as an OEM gasket). 5L 2458CC H4 SOHC, (16 Valve),"EJ25": Head Gasket Sets - Amazon. 039in thickness). It’s a well-documented issue that has left many owners frustrated, especially given Subaru’s lack of substantial support for the problem Feb 1, 2015 · It sounds like the only gaskets to use are the Six Star on the EJ25 motors. 00 The outer layers of the gasket are embossed and coated on both sides with a flouroelastomer rubber based material (Viton) designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. 5 x . Compatible with or fits: 2000 - 2003 Subaru Outback Base Wagon 4-Door 2. The car has 150k on it currently. 00 (CORE DEPOSIT IS REQUIRED IF YOU’RE NOT SENDING YOUR OWN HEADS TO BE REBUILT; AND ARE DOING THE Mar 7, 2006 · Here are photos and some advice about changing the head gaskets in a 1998 Subaru Forester 2. I know thermal expansion is hard on aluminum heads, Jun 19, 2012 · Thicker OEM headgasket part numbers (ej20/ej25) Built Motor Discussion Mar 10, 2016 · The mls gasket will seal compression gasses, but not coolant and oil properly. Fits EJ25 and EJ257. Sep 15, 2024 · 1. The gaskets include a proprietary four step coating process after embossing which features a silicone coat for improved sealing properties. The kit will include Head Gasket 11044AA610 X2 Exhaust Gasket 44011AC030 x2 Intake Gasket 14035AA281 x2 Cam Seal 806732150 x4 Crank Seal 806733030 x1 Don't settle for aftermarket components of questionable quality and always insist on Genuine Subaru replacements. Feb 14, 2007 · Follow-up question: After replacing the EJ25 with a new head gasket set, how long do you expect it to last? Will the head gasket blow again in approx 100k mile due to the design of the engine? Nov 9, 2022 · EJ253 head gasket replacement guide? Newbies & FAQsWelcome to the NASIOC. (I happily drove one for 75 miles or so today). I get what to look for for a LEAKING head gasket--bubbles in the overflow, milky oil, froth in the oil cap, sludgey coolant tank. This issue can lead to coolant leaks, overheating, and engine damage if not addressed promptly. JE utilizes state of the art in-line laser cutting and multi stage embossing technologies to ensure you get the highest quality gaskets. I have a disk off ebay for 08-12 Forester but the engine shows a DOHC, so its no good. com FREE DELIVERY possible on eligible purchases Apr 2, 2025 · According to our research, most of the EJ head gasket failures occur around the 100,000-mile mark and start as a slow oil or coolant leak. The Subaru 100mm Head Gasket for the EJ25 / EJ257 comes in a 0. Is that the same graphite Aug 28, 2019 · I’m pretty sure my head gaskets are starting to fail again on my 08 Outback 2. IT’S EASY TO DISTINGUISH BY THE TUBE GOING HORIZONTAL WITH ROCKER ASSEMBLY. This is in a '07 Outback. 99 at Subimods. com FREE DELIVERY possible on eligible purchases Feb 7, 2008 · I've been searching the internet to get more info on the dreaded EJ25 head gasket issue ('cause knowledge is power, right?); we who own Subes with the EJ25 engine are, of course, living with a Sword of Damocles hanging over our heads (heh, heh, nice pun, no?). Buy direct with global shipping to your door from Osaka, Japan. The original gasket will tend to fail again in similar mileage, where the MLS will outlast the car and failures are very, very rare. You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. The most common engine to have head gasket failures is the naturally aspirated (non turbo) Subaru 2. Aug 16, 2025 · The EJ25 head gasket is a crucial component in Subaru’s EJ25 engine, serving as a seal between the engine block and the cylinder head. 3mm Bore) $120. Jun 22, 2025 · For a balance of durability and compatibility across multiple EJ25 variants, consider MLS sets or Fel-Pro kits with proven coating and complete gasket coverage, while OEM Subaru kits provide direct factory alignment for older SOHC EJ25 engines. 5i. 047” and has a 101. Pay attention to the torque sequence for the head studs. We use these gaskets because the EJ257 rarely exhibits head gasket failure when properly cared for. 5L DOHC (EJ255) rebuild. This is a popular upgrade option for many higher power builds, where additional cylinder head clamping force is needed. In this episode, we pull the engine out so we can replace the head gaskets and timing belt s May 4, 2013 · Head Gasket Replacement Q&A EJ25D Normally Aspirated PowertrainWelcome to the NASIOC. I know that Felpro are supposed to be good, but that’s Description SUBARU 2. IIRC the originals were an organic material. These gaskets are with the later model water passages found on D25, V25B, W25, and N25 head castings. The head For high horsepower applications, engine performance can be significantly improved by using these Cooper Ring gaskets that are supplied with INOX steel rings. We speak English and all email queries are responded to promptly! Jun 2, 2024 · Understanding Head Gasket Issues in Subaru Ej25 Engines The head gasket of a Subaru EJ25 engine plays a critical role in ensuring the proper function of the engine by sealing the combustion chambers and maintaining the necessary pressure levels. First: timing belt removal. First off, why? Second, which one? May 6, 2025 · Years and Models Affected The main problem years are 1996 through 2004. CORE $600. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access Oct 1, 2014 · Hi, Having done some reading on this board and others, I'm now confused as to the correct gasket for the 2002 Outback EJ25 engine. 13 Mar 4, 2010 · Hi all, quick question Is the phase 2 Ej25 (02 Forester) head gasket torque sequence/specs the same as the phase 1 DOHC model? if not does anyone have a FSM handy and knows the torque specs? Thanks May 31, 2024 · A simple model I made in fusion360 of an EJ25 head gasket. 99 Pay over time with Affirm. The SOHC motors can be Feb 10, 2014 · Buy CNS MLS Head Gasket Set Compatible with 99-05 SAAB/Subaru 2. 13 Jul 19, 2022 · About this item After years of research and development testing, the IAG Fire-Lock head gasket is the newest solution to preventing head gasket failure on high horsepower and high boost EJ25 engines. 5 millions of rubber sealing gaskets, and 5000 tons of sealing law material. Head Gasket Failure The Issue: Perhaps most well-known EJ25 engine issue. Aug 6, 2012 · EJ25 Head Gasket Failure Normally Aspirated PowertrainWelcome to the NASIOC. Aug 30, 2020 · About this item NEW HEAD GASKET SET (FITS 2. 2006-2011. 5L H4 SOHC, Engine EJ25 Mar 10, 2025 · Head Gasket Failure: One of the most notorious problems with the EJ25 engine is head gasket failure, particularly in earlier models. 5L Fire-Lock head gasket is the latest solution to preventing head gasket failure on high horsepower and high boost Subaru EJ25 engines. Jun 5, 2025 · Head Gasket Failure: One of the most notable recalls involved head gasket failures in certain EJ25 engines. Sold Individually Dims: 11. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload May 3, 2017 · Subaru Engine Complete Gasket kit for your 2006-2009 Subaru SOHC NON TURBO. I was checking out parts on Rockauto. Multi-Layer Steel Head Gasket 11044AA642 x2 (Upgrade replacement for the 11044AA633) Exhaust Gasket 44011AC030 x2, Intake Gasket 14035AA383 x2, Cam Seal 806732150 x2, Crank Seal 806733030 x1 1999-2009 Outback and Legacy and Baja (4-Cyl. It prevents leaks of coolant and engine oil, maintaining proper engine function and performance. 5 DOHC (and below, a 2000 Outback SOHC 2. By joining our community, , you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features Mar 19, 2009 · Identifying new-style EJ25 Head Gaskets? By dave833, March 19, 2009 in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX Nov 30, 2020 · The TEZAU annual capacity is 2 millions of head gasket and full set, 3. Jun 28, 2022 · Full MLS Head Gasket Set with Bolts, HS26170PT-1 ES72212, Cylinder Engine Gasket Kit, Fits for Subaru Legacy Outback Impreza Forester Baja 1999-2003, 2. Fits: 2006-2008 Forester 2006-2009 Legacy & Outback fits EJ251 EJ25# EJ253 2006 2007 2008 Apr 20, 2013 · Here are photos and some advice about changing the head gaskets in a 1998 Subaru Forester 2. The EJ25 engine is commonly found in Subaru vehicles such as the Forester, Outback, and Impreza, known for their reliability and performance. The Question: While doing my research on head bolt torque, on this site, I found this info: Secure the head in place with the mounting bolts. Multilayer Stainless Steel Head gasket Embossed and tempered Long service life Shop Our Complete Catalog Of Genuine OEM Subaru Head Gaskets At Low Prices With Fast & Affordable Nationwide Shipping! Today we will take a look at Subaru 2. Why It Happens: Insufficient OEM gasket material Overheating Weak cooling system Poor maintenance Prevention: When buying an EJ25 engine, ensure head gaskets have been replaced with newer JE has come out with their own line of Multi-Layer Steel (MLS Headgaskets!) The basic premise of JE's MLS gaskets is sandwiching three or more layers of thin steel that have been embossed in critical sealing areas. This issue could lead to coolant leaks and, in severe cases, engine overheating. 051in thickness and the gaskets are sold as a pair in this kit. I am doing the head gaskets on my '09 Forester with 130+k miles on it. The single overhead camshaft (SOHC) variant experiences failures much more frequently than the dual overhead camshaft design (DOHC). Oct 27, 2019 · Okay so, this is my 1st '04 2. A better alternative compared […] Mar 23, 2011 · Hi everyone, I'm rebuilding an EJ25 (we decided to go the whole nine yards after noticing how gunked our 2000 Legacy's engine was when we were replacing the head gaskets), and I have been trying very hard to choose the best hardware for the job. Heat cycles: Even though the motors are all aluminum and the heads and block expand at the same rate, these lightweight castings flex as they heat and cool, scrubbing away at the OE composite gasket and the coating on Pro Seal MLS Head Gaskets by JE Pistons Every JE Pro Seal Head gasket utilizes the best raw materials available such as AISI 304 Stainless Steel. JE Pro Seal 2007+ Subaru EJ25-EJ257 1. Jan 15, 2020 · Buy MPLUS Head Gasket Set Fits 99-05 for Subaru Forester Impreza Legacy Outback Baja Saab 9-2x 2. 5 L four cylinder engine, commonly known as the EJ25 motor. as for your original question "how bad is the Get a reliable seal for your high-performance Subaru EJ25 or EJ257 engine with the JE Pro Seal Head Gasket (100mm, 0. Jan 13, 2024 · About this item Full Engine Gasket Set Head Bolts Kit For Subaru Impreza Forester Outback 2004 2005 2006 2007 2008 2009 2010 2011 2. 032" MLX Cylinder Head Gasket, 101mm Bore Material: MLX Compressed Thickness: . That goes for anything, not just EJ25's. See the photo below: a tight engine compartment that makes head removal "difficult" according to the Haynes manual Sep 14, 2023 · The EJ25 engine commonly experienced head gasket failures resulting in interior channel breaches or exterior fluid leaks due to the original equipment single layer coated gasket, and the conditioner was Subaru's only solution. The EJ specific gaskets include enlarged center head bolt holes to accommodate up to a 13mm head studs. 5L Turbo Powertrain (EJ Series Factory 2. 5L Turbo) Dec 28, 2022 · Subaru EJ25 Head Gasket torque sequence - which to use? Page: 1, 2 Next Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic Jump to: You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in Buy IAG Performance Fire-Lock Head Gasket Pair EJ25 / EJ257 100mm Bore . See the photo below: a tight engine compartment that makes head removal "difficult" according to the Haynes manual A little about the Six Star Head Gaskets for your Subaru If you want to replace your Head gaskets once and once only the Six Star Head Gasket is the one for you! The SIX STAR MLS “STOPPER” HEAD GASKET for Subaru is ideal for both aluminum heads and aluminum blocks. 027' Thick MLS (Multi-Layer Steel) Head Gaskets Provide maximum sealing performance for today's high output engines and require no sealants. Cooper Rings are oversize (also fits for oversize bores). Along with the stopper layer, our gaskets also have a nitrile coating to help to seal against the block & cylinder faces Our gaskets are also stamped from dies instead of laser-cut, this helps reduce variations between Oct 27, 2019 · Okay so, this is my 1st '04 2. 5L SOHC EJ25…: Head Gasket Sets - Amazon. All the Subaru shops around here switched years ago. 039" thickness, Subaru MLS head gaskets are a multi-layer design that is embossed & tempered for a long service life. (x2) are required per long block. The feloro/6star mls gaskets have viton coatings to help seal against the rough block/head finishes the factory pumped out until they finally got their **** together and went OEM Mls on the factory EJ25 NA motor in mid 2010. Ok, I just started my first 'real' engine project: Head gasket replacement on a '98 DOHC EJ25. JE Pro Seal gaskets have a proprietary outer layer coating that prevents Aug 26, 2020 · Properly replacing Subaru EJ25 head gaskets takes patience and quality parts. 5L EJ25 Turbo (06-17) - Learn more Made from AISI 301 shape-memory stainless steel and/or M0115 Durability against high compression ratios and boost pressures Perfect sealing and tightness Uprated performances, above OEM standards Sizes and part numbers : see below list Oct 21, 2010 · It's been dealer maintained its whole life. 8K 76K views 4 years ago On Amazon: *TIMING KIT: https://amzn. Coat each bolts Athena Reinforced Head Gasket Main application (s) : Subaru WRX / STI 2. Rebuilt an '08 SOHC a couple years back and 50K miles ago - still going strong. 2. After doing some reading, it sounds like the latest OEM Subaru head gaskets are possibly OK now??? Am I still better off with the Six star gaskets?? I am getting new Subaru head gaskets in the Jul 28, 2009 · Here are photos and some advice about changing the head gaskets in a 1998 Subaru Forester 2. 5L Subaru Head Gaskets (1 Pair w/ Fire-Lock Rings) for EJ25 / EJ257, 100mm, . com! Fig 2. Another common complaint is that the EJ25 has high oil consumption, which may be tied to these gasket failures. 5 for comparison) without pulling the engine. com Subaru forum. 5 SOHC non-turbo. Unlike Standard gaskets, Fuji Racing Gaskets have the ”Folded stopper layer” this design reduces any chance of pressure leakage from the cylinders. I'm just wondering, is head gasket failure on the EJ25 engine (like my 2009 X's) truly inevitable?Anyone driven an N/A Forester over 100,000 miles without Jun 13, 2017 · About this item Genuine Subaru engine head gasket kit for your 1999 and newer Subaru 2. Classic example of going elsewhere to fill the box. IAG Fire-Lock 2. Coat each bolts GrimmSpeed has set the standard for quality when it comes to aftermarket replacement gaskets so it's only natural that we should offer our fans the MOST important gaskets their car will ever need: Introducing The GrimmSpeed EJ25 and FA20 Head Gasket Sets! Feature-packed, these gaskets are a perfect fit for any engine b Aug 3, 2001 · Head gaskets for EJ25? Normally Aspirated with bolt-on Forced Induction Powertrain Tomei Metal Head Gasket Set 1. MLS gaskets are ideal for both aluminium he Nov 3, 2006 · EJ25 Head Gasket replacement questions Normally Aspirated Powertrain Performance Head Gaskets. Silicon-based beading is applied on critic Multi Layer Steel Head Gasket Subaru Impreza WRX EJ25 2. Multilayer Stainless Steel Head gasket Embossed and Oct 25, 2016 · This describes how I changed the passenger side head gasket in my 2003 EJ25 SOHC after a HG leak, without pulling the engine OR the intake manifold. 051 Inch Thickness w/ 14mm Head Studs, a Head Gaskets by IAG Performance, for only $299. Mar 27, 2021 · Subscribed 2. 5 engine typical problems and discuss the expected cost to fix them. 051", for 14mm Head Studs Availability: Usually Ships in 24 to 72 Hours (3) $329. to/3rtR72n *HEAD GASKET KIT: https://amzn. 5L Boxer Turbo engine from Subaru is infamous for oil and coolant leaks along with head gasket failure among many stages. . bjhf6 gb6q gwkld okpc g5f zhtykf lcqu gh kzc atdsn1