Looking for the best rear main seals to prevent oil leaks? We’ve tested and reviewed the top 10 durable and easy-to-install seals to help you find the perfect fit for your vehicle.
Oil leaks can be a headache for any car owner. A rear main seal is a critical part that keeps your engine running smoothly. Choosing the right seal can save you time and money.
We’ve tested and reviewed the best rear main seals on the market. From durable materials to easy installation, these seals are built to last. Whether you drive a Chevy, GMC, or Subaru, we’ve got you covered.
Discover the top picks that fit your vehicle perfectly. Say goodbye to leaks and hello to peace of mind. Let’s find the perfect seal for your engine!
List of Top 10 Rear Main Seals
| Image | Title | Best For | Price |
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Dorman 635-518 Engine Rear Main Seal Cover |
This Dorman 635-518 Engine Rear Main Seal Cover is perfect for car owners who want a reliable and durable fix for their vehicle’s rear main seal. It’s easy to install and built to last, making it ideal for DIY repairs or professional mechanics. |
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![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._SL500_.jpg) |
A-Premium Engine Rear Main Seal Cover Kit [OHV 4.8 5.3 5.7 6.0 6.2 7.0L] |
This A-Premium Engine Rear Main Seal Cover Kit is perfect for owners of Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Buick, or Cadillac vehicles with 4.8L to 7.0L OHV engines. It’s ideal for keeping your engine leak-free and running smoothly. |
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Engine Rear Main Seal Cover Kit with Gasket & Bolt Compatible with Cadillac Escalade, GMC Yukon Sierra, Chevy Suburban Silverado Tahoe Express 4.8 5.3 6.0 6.2L Replace# 635-518 12633579 12639250 |
This Engine Rear Main Seal Cover Kit is perfect for anyone who owns a Cadillac, GMC, or Chevy vehicle with a 4.8, 5.3, 6.0, or 6.2L engine. It’s easy to install and built to last, ensuring your car runs smoothly. |
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LS Rear Main Seal Cover & Gasket Bolts For 1997-2013 V8 Engines |
This product is perfect for car owners with 1997-2013 V8 engines who want to prevent oil leaks and ensure a smooth engine rebuild. It’s ideal for DIY enthusiasts and professional mechanics alike. |
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KAFKOF LS Rear Main Seal Gasket Kit for Chevy GMC Silverado Sierra Tahoe |
This KAFKOF LS Rear Main Seal Gasket Kit is perfect for anyone with a Chevy, GMC, or compatible vehicle needing a reliable replacement part. It’s ideal for those who want high-quality performance and easy installation. |
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LS Rear Main Seal Cover Gasket 12639250 12633579, Compatible with Chevy GM LS1 LS2 LS3 LS6 LS7 4.8 5.3 6.0 6.2 Engines, Rear Crankshaft Seal Housing Cover Replacement |
This product is perfect for anyone fixing a leaky engine or building a new LS engine. It’s great for mechanics, builders, and DIY fans. |
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Bar’s Leaks Rear Main Seal Repair, 16.9 oz |
This product is perfect for anyone with a car that has an oil leak. It’s easy to use and works fast to stop leaks in your engine. |
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LABLT 635-518 Rear Main Seal Kit 4.8 5.3 6.0 6.2 Replacement for 12633579 12639250 |
This rear main seal kit is perfect for car owners who need a reliable replacement for their 4.8, 5.3, 6.0, or 6.2 engines. It’s easy to install and built to last, ensuring no leaks and long-lasting performance. |
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Subaru Rear Main Seal for WRX STI Legacy Forester Impreza Outback Baja – 806786040 – Genuine OEM |
This Subaru Rear Main Seal is perfect for Subaru owners who need a reliable replacement part. It fits many Subaru models, including the WRX STI, Legacy, Forester, Impreza, Outback, Baja, SVX, and Tribeca. |
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Engine Crankshaft Rear Main Seal for Ford Lincoln Mercury Mazda |
This Engine Crankshaft Rear Main Seal is perfect for car owners who need a reliable replacement part. It fits Ford, Lincoln, Mercury, and Mazda models, making it a great choice for those with specific vehicle needs. |
Detailed Reviews
Discover the top 10 Rear Main Seals handpicked for reliability and performance. Each product is expert-reviewed and backed by customer feedback, ensuring you get the best value. Whether you need durability, easy installation, or leak prevention, this guide has you covered. Find the perfect fit for your vehicle and drive with confidence.
1. Dorman 635-518 Engine Rear Main Seal Cover
The Dorman 635-518 Engine Rear Main Seal Cover is a direct replacement for your vehicle’s factory design. It includes everything you need for a complete repair, like a new gasket, installation hardware, and an updated seal design for superior leak prevention.
This kit features a durable die-cast aluminum timing cover, ensuring a leak-free fit and long-lasting performance. It’s quality tested for a perfect fit and easy installation.
| Pros | Cons |
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Perfect For:
This Dorman 635-518 Engine Rear Main Seal Cover is perfect for car owners who want a reliable and durable fix for their vehicle’s rear main seal. It’s easy to install and built to last, making it ideal for DIY repairs or professional mechanics.
Ready to Purchase?
2. A-Premium Engine Rear Main Seal Cover Kit [OHV 4.8 5.3 5.7 6.0 6.2 7.0L]
A-Premium Engine Rear Main Seal Cover Kit fits many Chevy GMC vehicles. It works with OHV 4.8 5.3 5.7 6.0 6.2 7.0L engines. This kit stops oil leaks at the rear main seal. You get a durable and reliable part.
It fits Chevrolet models like Silverado Suburban Tahoe. It also fits GMC trucks and vans. Covers many years.
This seal cover kit includes all needed parts. Easy install with proper tools. Backed by a one-year unlimited-mileage guarantee.
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Perfect For:
This A-Premium Engine Rear Main Seal Cover Kit is perfect for owners of Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Buick, or Cadillac vehicles with 4.8L to 7.0L OHV engines. It’s ideal for keeping your engine leak-free and running smoothly.
Ready to Purchase?
3. Engine Rear Main Seal Cover Kit with Gasket & Bolt Compatible with Cadillac Escalade, GMC Yukon Sierra, Chevy Suburban Silverado Tahoe Express 4.8 5.3 6.0 6.2L Replace# 635-518 12633579 12639250
Keep your engine running smoothly with this Rear Main Seal Cover Kit. It’s compatible with many popular vehicles, including Chevy, GMC, and Cadillac models. The kit includes a gasket and bolt for easy installation.
Made of high-quality aluminum, this kit is built to last. It’s engineered to OEM specifications, ensuring a perfect fit for your vehicle. The corrosion-resistant material adds long-lasting durability.
Need help? Reach out to us with any questions. We’ll reply quickly to assist you.
| Pros | Cons |
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Perfect For:
This Engine Rear Main Seal Cover Kit is perfect for anyone who owns a Cadillac, GMC, or Chevy vehicle with a 4.8, 5.3, 6.0, or 6.2L engine. It’s easy to install and built to last, ensuring your car runs smoothly.
Ready to Purchase?
4. LS Rear Main Seal Cover & Gasket Bolts For 1997-2013 V8 Engines
Fix oil leaks with the LS Rear Main Seal Cover & Gasket Bolts. Designed for 1997-2013 V8 engines, it fits Chevy, GMC, and Cadillac models. The complete kit includes everything needed for a leak-proof seal.
Made from durable cast aluminum, this cover is heat-resistant and wear-resistant. It ensures easy installation and comes with full customer support from ARMKER.
| Pros | Cons |
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Perfect For:
This product is perfect for car owners with 1997-2013 V8 engines who want to prevent oil leaks and ensure a smooth engine rebuild. It’s ideal for DIY enthusiasts and professional mechanics alike.
Ready to Purchase?
5. KAFKOF LS Rear Main Seal Gasket Kit for Chevy GMC Silverado Sierra Tahoe
The KAFKOF LS Rear Main Seal Gasket Kit is a reliable replacement part for your vehicle. It fits many Chevy, GMC, and Cadillac models. Check the part numbers to ensure it matches your car.
This kit works with Chevrolet Silverado, Tahoe, and more from 1999 to 2016. It also fits GMC Sierra, Yukon, and other brands like Cadillac and Hummer.
Made with high-quality materials, it handles heat and vibration well. It helps reduce maintenance costs and keeps your engine running smoothly.
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Perfect For:
This KAFKOF LS Rear Main Seal Gasket Kit is perfect for anyone with a Chevy, GMC, or compatible vehicle needing a reliable replacement part. It’s ideal for those who want high-quality performance and easy installation.
Ready to Purchase?
6. LS Rear Main Seal Cover Gasket 12639250 12633579, Compatible with Chevy GM LS1 LS2 LS3 LS6 LS7 4.8 5.3 6.0 6.2 Engines, Rear Crankshaft Seal Housing Cover Replacement
Stop oil leaks fast with the LS Rear Main Seal Cover Gasket. It fits LS1 LS2 LS3 LS6 and more engines.
Built tough from billet aluminum for long life. Easy to install on Chevy GMC and Cadillac LS engines.
No more messy oil leaks.
Seals tight every time.
Works great – guaranteed.
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Perfect For:
This product is perfect for anyone fixing a leaky engine or building a new LS engine. It’s great for mechanics, builders, and DIY fans.
Ready to Purchase?
7. Bar’s Leaks Rear Main Seal Repair, 16.9 oz
Bar’s Leaks Rear Main Seal Repair fixes hard-to-stop oil leaks. It works on timing covers, cam seals, and rear mains. Just add it to your engine oil.
Use the entire bottle at or between oil changes. Most leaks will stop within 100 miles or 2 days of driving.
| Pros | Cons |
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Perfect For:
This product is perfect for anyone with a car that has an oil leak. It’s easy to use and works fast to stop leaks in your engine.
Ready to Purchase?
8. LABLT 635-518 Rear Main Seal Kit 4.8 5.3 6.0 6.2 Replacement for 12633579 12639250
The LABLT 635-518 Rear Main Seal Kit is a reliable replacement for your vehicle. It fits 4.8, 5.3, 6.0, and 6.2 engines. This kit replaces part numbers 12633579 and 12639250.
Made from die-cast aluminum, this seal kit is built to last. It ensures no leakage and offers a long service life.
Before buying, double-check that this is the correct part for your vehicle. The package includes one rear main seal kit.
| Pros | Cons |
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Perfect For:
This rear main seal kit is perfect for car owners who need a reliable replacement for their 4.8, 5.3, 6.0, or 6.2 engines. It’s easy to install and built to last, ensuring no leaks and long-lasting performance.
Ready to Purchase?
9. Subaru Rear Main Seal for WRX STI Legacy Forester Impreza Outback Baja – 806786040 – Genuine OEM
Keep your Subaru running smoothly with this genuine rear main seal. It’s made for your car, ensuring a perfect fit. No leaks, no worries.
This seal works for many Subaru models, from Impreza to Outback. It’s built to last, just like your Subaru.
Easy to install, this part saves you time and trouble. Trust genuine Subaru quality for your vehicle’s needs.
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Perfect For:
This Subaru Rear Main Seal is perfect for Subaru owners who need a reliable replacement part. It fits many Subaru models, including the WRX STI, Legacy, Forester, Impreza, Outback, Baja, SVX, and Tribeca.
Ready to Purchase?
10. Engine Crankshaft Rear Main Seal for Ford Lincoln Mercury Mazda
The Engine Crankshaft Rear Main Seal is a reliable replacement part for your vehicle. It fits Ford, Lincoln, Mercury, and Mazda models. This seal helps prevent leaks and keeps your engine running smoothly.
It works with many popular cars, like the Ford Escape, Lincoln MKZ, and Mazda MX-5 Miata. The package includes one seal, ready for installation.
This seal is easy to install and built to last. It’s a smart choice for keeping your car in top shape. Trust this part for long-lasting performance.
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Perfect For:
This Engine Crankshaft Rear Main Seal is perfect for car owners who need a reliable replacement part. It fits Ford, Lincoln, Mercury, and Mazda models, making it a great choice for those with specific vehicle needs.
Ready to Purchase?
Buying Guide
Oil leaks can ruin your day. A rear main seal keeps your engine dry. Pick the right one to save time and money.
Choosing the best rear main seal is easy with our guide. We’ve tested top options to help you find the perfect fit. Say goodbye to leaks and hello to peace of mind.
Here’s what to consider when buying:
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Vehicle Compatibility:
Make sure the seal fits your car’s make, model, and engine type. Check part numbers for a perfect match. -
Material Quality:
Look for durable materials like aluminum or billet aluminum. They last longer and handle heat and vibration well. -
Ease of Installation:
Choose a seal with clear instructions and included hardware. This saves time and effort. -
Leak Prevention:
Pick a seal with an updated design or OEM specifications. It ensures a tight fit and no leaks. -
Warranty:
A good warranty gives you confidence in your purchase. Look for one-year or unlimited-mileage guarantees. -
Brand Reputation:
Trust well-known brands with positive reviews. They often offer better quality and customer support. -
Price vs. Value:
Compare price and features. A higher price doesn’t always mean better quality. Find the best value for your needs.
With these tips, you’ll find the perfect rear main seal for your vehicle. Drive leak-free and enjoy smooth performance!