This post contains affiliate links. As an Amazon Associate we earn from qualifying purchases.
Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.
A reliable rear main seal set is crucial for preventing oil leaks from the engine's crankshaft. A failing seal can lead to significant oil loss, engine damage, and costly repairs. Ensuring you select a high-quality replacement set will protect your vehicle's performance and longevity.
Direct replacement - this rear main seal cover kit matches the factory design, and includes a new gasket, installation hardware, and an updated seal design for superior leak prevention
Durable construction - the timing cover in this kit is made of die-cast aluminum for a leak-free fit and durability
Convenient solution - this kit includes a new gasket and installation hardware for a complete repair
Quality tested - this part has undergone extensive testing to ensure a quality fit and long service life
Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
Please check the “Amazon Confirmed Fit” bar at the top of this page before buying product to ensure this product works for your vehicle. If the “Amazon Confirmed Fit” bar has an “i” in a blue circle, this product has additional notes. Please...
OEM Replacement Accuracy: Engineered for Exact Fit and Seal Integrity Replaces OEM numbers 12612350, 12637683, OS30693R, PG3165, 12558760, OS32241, OS21006, OS6315P, 16792, 2005-481851, 343885, 257778, OS6315, B32790, and 635-518 (Rear Main Seal...
Broad Vehicle Compatibility: 635-518 Rear Main Seal Kit fits for GM 4.8L–6.2L V8 Engines from 1999–2020 Perfect fit for Chevy Silverado, Suburban, Tahoe, Avalanche, Trailblazer, Camaro, Express, Impala; GMC Sierra, Yukon, Envoy, Savana, Canyon...
Comprehensive Upgrade: 635-518 Rear Main Seal Kit includes the rear main seal assembly, providing a complete lower engine sealing solution. Ideal for rebuilds, oil leak repair, or preventive maintenance
Premium Materials: Durable, Heat-Resistant, and Oil-Tight Construction, Crafted from high-grade nitrile rubber and metal-reinforced materials to withstand extreme heat, pressure, and oil exposure. Delivers long-lasting durability and leak-proof protection
Easy Installation: Complete Kit with Pre-Cut Alignment and Tools-Includes oil pan gasket, valve cover gaskets, oil pickup O-ring, rear main seal, gloves, dust brush, and mounting grommets. Pre-cut alignment holes allow quick, accurate installation—no...
What You Get: 635-518 Rear Main Seal Kit with Oil Pan Gasket(Includes 1 Pcs Oil Pan Gasket+1 Pcs Oil Pump Pickup Tube Gasket+2 Pcs Valve Cover Gaskets+8 Pcs Grommets+2 Pcs Graphite Gaskets+ B32790 oil pickup tube o'ring+ 635-518 Engine Rear Main Seal...
Compatible with GMC: Canyon 2009-2012 | Envoy 2005-2009 | Savana 1500 2003-2014, Savana 2500 3500 2003-2020, Savana 4500 2009-2019 | Sierra 1500 1999-2013, Sierra 1500 HD 2001-2006, Sierra 2500 1999-2014, Sierra 2500 HD 2001-2019, Sierra...
Part Number: Rear Main Seal Cover replace for 635-518, 12633579, 12639250. Please check fitment for your vehicle to confirm the compatibility before purchase
Perfect Fit: Engineered to OEM specifications, made of high quality aluminum, corrosion resistance, long durability. Any questions please feel free to reach out to us, and we will reply to you in time
Application: Rear Main Seal Gasket Compatible with 2005-2010 for Chrysler 300 2.7L;2008-2010 for Chrysler Sebring 2.7L;2008-2009 for Dodge Avenger 2.7L;2006-2010 for Dodge Charger 2.7L;2005-2008 for Dodge Magnum 2.7L
Interchange OE Part Number: Gasket Set Replace# BS40690, JV1719, JV1643, RM1116, SK1719, 284234. Before purchasing, please check the “Amazon Confirmed Fit” bar to ensure this part will fit your vehicle
Exceptional Durability: Gaskets made from premium-quality materials with Exclusive sealing innovations and technologies to ensure a superior seal for your gaskets and outstanding durability and long-lasting, extending the lifespan of your engine
OEM Design & Direct Fit: Our engine gasket kit is specifically designed for imperfect sealing surfaces, meets or exceeds OEM standards. It works even better and lasts longer. Save yourself times and money by replacing gasket kit yourself
Package Include: Rear Main Seal( Please Note : Gasket kit detailed accessories as shown in the picture)
OEM Replacement Accuracy: Engineered for Exact Fit and Seal Integrity Replaces OEM numbers 12612350, 12637683, OS30693R, PG3165, 12558760, OS32241, OS21006, OS6315P, 16792, 2005-481851, 343885, 257778, OS6315, B32790;635-518 (Rear Main Seal), TCS...
Broad Vehicle Compatibility: This LS Engine Oil Leak Repair Kit fits for GM 4.8L–6.2L V8 Engines from 1999–2020 Perfect fit for Chevy Silverado, Suburban, Tahoe, Avalanche, Trailblazer, Camaro, Express, Impala; GMC Sierra, Yukon, Envoy, Savana...
Complete Engine Sealing Kit:Includes rear main seal (635-518), oil pan gasket (12612350), timing cover gasket set, and camshaft retainer plate gasket. Designed to address multiple common oil leak points in one repair.
Premium Materials: Durable, Heat-Resistant, and Oil-Tight Construction.Crafted from high-grade nitrile rubber and metal-reinforced materials to withstand extreme heat, pressure, and oil exposure. Delivers long-lasting durability and leak-proof protection.
Multiple Leak Points Coverage:Suitable for sealing rear main, oil pan, and timing cover areas. Helps restore engine sealing performance during maintenance or rebuild work.
Installation-Ready Kit with Pre-Cut Alignment Includes oil pan gasket, valve cover gaskets, oil pickup O-ring, rear main seal, mounting grommets, and hardware. Pre-cut alignment holes help support accurate positioning during installation.
What You Get:Oil Pan Gasket Kit(Includes 1 Pcs Oil Pan Gasket+1 Pcs Oil Pump Pickup Tube Gasket+2 Pcs Valve Cover Gaskets+8 Pcs Grommets+2 Pcs Graphite Gaskets+ B32790 oil pickup tube o'ring+ 635-518 Engine Rear Main Seal Cover Kit with Gasket...
4 PACK VALUE & CONVENIENCE: Get four high-quality rear main seals in one set. Perfect for having spares on hand—install one now and keep extras for future maintenance or emergencies.
PRODUCT COMPATIBILITY: Perfect replacement for type 1 vw engines, Specifically designed as a direct replacement part for Type 1 air-cooled engines. Compatible with classic models including Volkswagen Beetle (Standard & Super Beetle), Karmann Ghia, and VW...
PRODUCT MATERIAL: Manufactured from robust, heat-resistant nitrile rubber and other premium materials. This high-quality build effectively resists degradation from engine oil, heat, and friction, ensuring long-lasting reliability and engine protection.
SUPERIOR LEAK PROTECTION: Engineered to deliver a tight, dependable seal that effectively prevents oil leaks. Withstands engine heat and maintains optimal oil pressure, safeguarding your engine's performance and preventing messy oil spots underneath your...
SIMPLE, STRAIGHTFORWARD INSTALLATION: Designed for a perfect fit and easy installation, matching the original specifications. Follow standard repair procedures for a hassle-free experience, making it an ideal solution for DIY enthusiasts or professionals...
【OE/Interchange Part number】:Replacement for GM 89060436 12639249, Replacement for BS 40640.
【Compatible with the following vehicles 】: Rear Mail Seal Gasket compatible with 4.8L 5.3L 5.7L 6.0L 6.2L GM Vortec engine, including Compatible with Chevrolet Silverado Suburban Tahoe Avalanche Colorado Camaro Express Trailblazer Caprice Impala GMC...
【High quality & durable 】 :Main Seal Gasket Set Meets or exceeds equipment specifications.It is highly durable and less prone to breakage. to provide exceptional service life and reliability. Gasket systems can withstand high pressures, high...
【What You'll get】: 1 Set of Rear Mail Gasket Seal & 1pair free installation gloves and 1 cleaning brush &12 Months Warranty. If you have any problems or concerns, please kindly send us mail any time, we are always here to provide you 100% satisfied...
GET THE RIGHT PART -- Before purchasing, research to ensure that the part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes
Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
FEL-PRO BS 40681 Engine Crankshaft Seal Kit for BMW Z3
COMPATIBILITY – Fits 1992-1995 BMW 320i; 2001-2005 BMW 320i; 2000-2000 BMW 323Ci; 1998-2000 BMW 323i; 1998-1999 BMW 323is; 2001-2006 BMW 325Ci; 1992-1992 BMW 325i; 1993-1993 BMW 325i; 1994-2005 BMW 325i; 1992-1995 BMW 325is; 2001-2005 BMW 325xi...
GET THE RIGHT PART -- Before purchasing, research to ensure that the part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes
Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Rear Main Gasket Sets
Material Quality
Look for sets made from durable materials like high-grade rubber or silicone. These materials offer better resistance to heat, oil, and wear, ensuring a longer lifespan and a more effective seal.
Avoid materials that are known to degrade quickly or become brittle over time, as this will lead to premature failure.
Vehicle Compatibility
Always verify that the rear main seal set is specifically designed for your vehicle's make, model, and year. Using an incompatible part can result in poor fitment and ineffective sealing.
Check the product description carefully for compatibility information, including engine type and specific part numbers.
Some sets include additional components like wear sleeves or installation tools, which can be beneficial depending on the condition of your crankshaft.
Frequently Asked Questions
What are the signs of a failing rear main seal?
Common indicators include oil leaks originating from the rear of the engine, often visible on the transmission bellhousing. You might also notice a burning oil smell due to oil dripping onto hot exhaust components.
Can I replace the rear main seal myself?
Replacing a rear main seal is a complex job that typically requires removing the transmission and flywheel. It demands specialized tools and mechanical expertise, so it's often best left to experienced mechanics.
How long does a rear main seal typically last?
The lifespan of a rear main seal can vary depending on driving conditions, oil quality, and material. However, they are generally designed to last for the life of the vehicle, often exceeding 100,000 miles.
Are there different types of rear main seals?
Yes, the most common types are one-piece and two-piece seals. One-piece seals are integrated into a single unit, while two-piece seals consist of two halves that fit around the crankshaft. Compatibility with your specific engine is key.
As an Amazon Associate, we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated and are subject to change.
We use cookies to enhance your experience. By continuing to visit this site you agree to our use of cookies. Read our Privacy Policy
Before You Go!
Get the latest deals and product comparisons delivered to your inbox.
