Ensuring your vehicle runs smoothly relies on every component performing optimally, and the main seal is no exception. A properly functioning main seal prevents vital fluids from leaking out, protecting your engine and transmission from damage. Choosing the right replacement seal is crucial for long-term reliability and performance.
- 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
![A-Premium Engine Rear Main Seal Cover Kit [OHV 4.8 5.3 5.7 6.0 6.2 7.0L]](https://m.media-amazon.com/images/I/41gRkRB2CrL._SL160_._SL160_.jpg "The Best Automotive Replacement Main Seals 3")
- [Vehicle Fitment-1]: ①Compatible with Chevrolet Avalanche 02-13 // Camaro 98-15 // Caprice 11-12 // Colorado 09-12 // Corvette 97-12 // Express 1500 Van 03-14 // Express 2500 Van 03-20 // Express 3500 Van 03-20 // Express 4500 Van 09-20 // Impala...
- [Vehicle Fitment-2]: ②fits for Chevy Silverado 2500 99-04, Silverado 2500 HD 0120-, Silverado 2500 HD Classic 07 // Silverado 3500 01-06, Silverado 3500 Classic 2007, Silverado 3500 HD 07-20 // SSR 03-06 // Suburban 18-20 // Suburban...
- [Vehicle Fitment-3]: ④fits for GMC Savana 1500 Van 03-14 // Savana 2500 Van 03-20 // Savana 3500 Van 03- // Savana 4500 09- // Sierra 150 99-13 // Sierra 1500 Classic 2007 // Sierra 1500 HD 01-06 // Sierra 1500 HD Classic 07 // Sierra...
- [Vehicle Fitment-4]: ⑤fits for Hummer H2 2003-2009 // H3 2008-2010 // H3T 2009-2010 ⑥fits for Isuzu NPR 2003-2016 // NPR-HD 2003-2016 ⑦fits for Pontiac Pontiac 1998-2002 // G8 2008-2009 // Grand Prix 2005-2008 // GTO 2004-2006 ⑧fits for Saab 9-7X...
- Ford Racing a trusted industry leader
- Backed by manufacturer's Warranty
- Great Performance
- Enhance your vehicle
- OE Number:91214-RCA-A01/91214RCAA01/91214-RKG-003/91214RKG003. Fitment: for Honda Pilot 2005-2012, for Honda Odyssey 2005-2012, for Honda Ridgeline 2006-2012, for Honda Accord 2006-2012, for Acura MDX 2005-2013, for Acura TL 2004-2013.
- It's made of rubber and metal, meet the professional specification for stable performance & durable service.
- This new Engine Crankshaft Oil Seal is good to replace the broken one.
- Installation: Directly replace and easy to install.
- COMPATIBILITY – Fits 2003-2006 Nissan 350Z; 2002-2006 Nissan Altima; 1995-2001 Nissan Maxima; 2002-2006 Nissan Maxima; 2003-2006 Nissan Murano; 2001-2004 Nissan Pathfinder; 2004-2006 Nissan Quest; 2006-2008 INFINITI M35; 2003-2006 INFINITI G...
- GET THE RIGHT PART -- Before purchasing, please check the “Amazon Confirmed Fit” bar to ensure this part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes. If the...
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Seals the openings on either end of the crankshaft for a tight seal
- Withstands heat and pressure to help prevent the engine from leaking oil
- GM-recommended replacement part for your GM vehicle's original factory component
- Offering the quality, reliability, and durability of GM OE
- Direct replacement - this rear main seal cover matches the fit and function of the original equipment cover for a trouble-free installation
- Durable construction - this rear main seal cover is made of quality materials for a reliable fit and enduring service life
- Convenient solution - get a quality repair solution without the hassle of buying original equipment
- Quality tested - this part has undergone extensive testing to ensure a quality fit and long service life
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
- Fitments: Replacement for Lacrosse 2008-2009, Replacement for Rainier 2004-2007, Replacement for Chevy Camaro 2010-2015, Replacement for Chevy Colorado 2009-2012, Replacement for Chevy Suburban 2016-2020, Replacement for Chevy Tahoe 2000-2014, Replacement...
- Part number: 635-518, 12633579, 12639250
- Size: Inside Diameter (in): 2.7 in, Length (in): 10 in, Width (in): 6 in
- Warning: Before fixing the mounting screws, make sure that the timing cover body and the flange shaft are in the same center, and then fix the mounting screws!!!!
- COMPATIBILITY – Fits 2006-2007 Audi A3; 1997-2006 Audi A4; 2005-2007 Audi A4; 1997-2005 Audi A4 Quattro; 2005-2007 Audi A4 Quattro; 2000-2006 Audi TT; 2000-2006 Audi TT Quattro; 2007-2010 Volkswagen Golf City; 2007-2009 Volkswagen Jetta City...
- GET THE RIGHT PART -- Before purchasing, please check the “Amazon Confirmed Fit” bar to ensure this part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes. If the...
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
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Last update on 2026-10-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Main Seals
Understanding Main Seals
The main seal, often referred to as the rear main seal or front main seal depending on its location, is a critical component designed to prevent oil from leaking out of the engine or transmission at the crankshaft. When these seals wear out, oil can leak onto the clutch, flywheel, or exhaust system, leading to potential damage and safety hazards. Replacement is necessary when leaks are detected or as part of a preventative maintenance schedule.
Types of Main Seals
Main seals are typically made from materials like rubber (nitrile, viton) or PTFE (polytetrafluoroethylene). Rubber seals are common and cost-effective but can degrade over time due to heat and oil exposure. PTFE seals, often seen in one-piece designs, offer superior heat and chemical resistance and can provide a more durable seal, especially in high-performance applications. The original equipment manufacturer (OEM) often specifies a particular type, but aftermarket options may offer enhanced durability.
Key Features to Consider
When selecting a replacement seal, consider the material composition for durability and resistance to engine oil and heat. The seal's design, whether it's a traditional two-piece rubber seal or a modern one-piece lip seal, can impact installation and sealing effectiveness. Ensure the seal is compatible with your vehicle's specific make, model, and year. Some seals may come with installation tools or helpful guides, which can be beneficial for DIY repairs.
Installation and Maintenance Tips
Replacing a main seal is often a labor-intensive job, typically requiring the engine or transmission to be removed. It's advisable to have this repair performed by a qualified mechanic unless you have significant automotive repair experience. After installation, monitor for any signs of leaks and check your oil levels regularly. Using the correct type and amount of engine oil, as specified by your vehicle manufacturer, will also help prolong the life of the new seal.
Comparison Tips
- Material: Compare seals made from nitrile for general use versus Viton or PTFE for higher heat and oil resistance.
- Design: Evaluate one-piece lip seals against traditional two-piece seals for potential differences in sealing performance and ease of installation.
- Brand Reputation: Research brands known for producing reliable automotive components. Look for seals with good reviews regarding longevity and fitment.
- Vehicle Specificity: Always confirm that the seal is designed for your exact vehicle's year, make, and model to ensure proper fit and function.
