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.
Looking for the best Automotive Replacement Main Seals?
Discover now our comparison of the best Automotive Replacement Main Seals. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Automotive Replacement Main Seals are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Automotive Replacement Main Seals in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
- 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...
- Ford Racing a trusted industry leader
- Backed by manufacturer's Warranty
- Great Performance
- Enhance your vehicle
- Fast Shipping
![A-Premium Engine Rear Main Seal Cover Kit [OHV, 8Cyl 4.8 5.3 5.7 6.0 6.2 7.0L] Compatible with Chevy, GMC...](https://m.media-amazon.com/images/I/41gRkRB2CrL._SL160_.jpg)
- [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...
- [Specifications]: Reference Number: 635-518, 12633579, 12639250, 12615666, 12598301, 500323RSH, SK635518, 8-12572-014-0, 8-12598-301-0, 8-12614-813-0, 8-12633-579-0, 8-12639-250-0 ①Inside Diameter (in): 2.7 in; ②Length (In): 10 in; ③Width (in...
- FEL-PRO BS 40190 Engine Crankshaft Seal Kit for Buick LeSabre
- COMPATIBILITY – Fits 2005-2005 Buick LaCrosse; 2005-2005 Buick Allure; 2004-2004 Buick LeSabre; 2005-2005 Buick LeSabre; 2004-2004 Buick Park Avenue; 2005-2005 Buick Park Avenue; 2004-2004 Buick Regal; 2004-2005 Chevrolet Impala; 2004-2005 Chevrolet...
- 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
- Unsurpassed quality you can trust
- Rear main bearing oil seal installation set
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
- 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
- Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
- THIS IS BRAND NEW: DNJ® Rear Main Seal
- FITS: 95-16 Nissan, Infiniti 2.5L-3.5L V6 DOHC Naturally Aspirated VQ35DE,VQ25HR,VQ30DE
- FITMENT NOTES: w/ Retainer
- DNJ Engine Components is a full line provider of Domestic & Japanese engine parts for cars and trucks.
- We carefully selected DNJ Engine Components as the sole provider. DNJ has a 30+ year track record of quality, experience, and trust. It makes sense for us to carry a brand that would help us earn customer loyalty in the long run
- Manufacturer part number: 635-518
- Made of die-cast aluminum, no leakage, long service life
- The part has been extensively tested to ensure quality
- Note: Please double-check that it is the part you need before purchasing
- Package Includes: 1 x rear main seal kit
- FEL-PRO BS 40181 Engine Crankshaft Seal Kit for Dodge Ram 1500
- COMPATIBILITY – Fits 1995-1998 Dodge B1500; 1992-1994 Dodge B150; 1992-1994 Dodge B250; 1995-1998 Dodge B3500; 1992-1994 Dodge B350; 1992-1993 Dodge D150; 1992-1993 Dodge D250; 1994-2001 Dodge Ram 1500; 1999-2003 Dodge Ram 2500 Van; 2001-2001 Dodge Ram...
- 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
- Unsurpassed quality you can trust
- FEL-PRO BS 40619 Engine Crankshaft Seal Kit for Ford Explorer
- COMPATIBILITY – Fits 2005-2009 Land Rover LR3; 2001-2003 Ford Explorer Sport; 2001-2010 Ford Explorer Sport Trac; 1995-1997 Ford Aerostar; 1995-2010 Ford Explorer; 2005-2010 Ford Mustang; 1995-2011 Ford Ranger; 1998-2010 Mercury Mountaineer...
- 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
- Unsurpassed quality you can trust
- Rear main bearing oil seal installation set
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
- FEL-PRO BS 40663 Engine Crankshaft Seal Kit for Hyundai Sonata
- COMPATIBILITY – Fits 2015-2020 Ram ProMaster City; 2019-2019 Genesis G70; 2001-2006 Kia Optima; 2006-2019 Kia Optima; 2011-2016 Kia Optima; 2017-2019 Kia Optima; 2011-2019 Kia Sorento; 2016-2018 Kia Sorento; 2011-2019 Kia Sportage; 2012-2013 Kia Forte...
- 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
- Unsurpassed quality you can trust
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We do everything we can to offer you relevant comparisons, based on various criteria and constantly updated. The product you are looking for is probably among these pages. A few clicks will allow you to make a fair and relevant choice. Don’t be disappointed with your purchases made on the Internet and compare the best Automotive Replacement Main Seals now!
Last update on 2026-04-17 / 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.
