Are you looking for the
best GM engine seal gaskets
? I can help you find
top-quality seals
for your engine’s needs!
When your GM engine needs the best, top-quality seals are key. These vital parts keep your engine running strong and prevent costly leaks. We’ve gathered information on some of the finest GM engine seal gaskets available.
Finding the right gasket ensures your engine performs at its peak. Our guide helps you understand the features and benefits of different options. Get ready to discover the perfect seal for your needs.
Discover reliable performance. Find lasting durability. Drive with confidence.
List of Top 10 GM Engine Seal Gaskets
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FEL-PRO BS 40640 Engine Crankshaft Seal Kit for Chevrolet Silverado 1500 |
The FEL-PRO BS 40640 Engine Crankshaft Seal Kit is perfect for Chevrolet Silverado 1500 owners who need a reliable replacement. It’s also ideal for those with compatible Buick, Cadillac, or Isuzu models looking for a trusted, high-quality repair solution. |
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AUTOBABA GEN 3 III LS Gasket Set Kit & LS Head Gaskets Compatible with 1999-2010 GM Chevy Silverado GMC Sierra 1500 2500 Engine LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L Replace# 12558178 12551933 12611384 |
This gasket set is perfect for GM Chevy Silverado and GMC Sierra owners who need a reliable replacement for their engine gaskets. It’s ideal for 1999-2010 models with 4.8L, 5.3L, 5.7L, or 6.0L engines. |
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GM Genuine Parts 15203889 Engine Oil Cooler Gasket |
This GM Genuine Parts Engine Oil Cooler Gasket is perfect for vehicle owners who want reliable, leak-free performance. It’s designed by GM engineers to fit your Chevrolet, Buick, GMC, or Cadillac perfectly. |
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Unaykolb Engine Full Gasket Set w/Seal Silicone for GM for Chevrolet/for GMC Throttle Body TBI 5.7 Liter 350 Cubic Inch V8 Engines from 1987 Through 1995 |
This Unaykolb Engine Full Gasket Set is ideal for owners of GM Chevrolet or GMC trucks with 5.7 Liter 350 V8 engines from 1987 to 1995. If you’re looking for a reliable, high-quality gasket set to keep your engine running smoothly, this is a great choice! |
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LOBIUTIYA 635-518 Rear Main Seal Kit with Oil Pan Gasket, 12612350 Oil Pan Gaskets for Chevy Silverado Suburban Tahoe Trailblazer GMC Sierra Yukon 4.8L 5.3L 6.0L 6.2L, 12637683 |
This LOBIUTIYA Rear Main Seal Kit is perfect for anyone fixing oil leaks or doing engine repairs on their Chevy, GMC, Cadillac, or Buick with a 4.8L to 6.2L V8 engine. It’s easy to install and comes with everything you need for a leak-free seal. |
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Sumyola Rear Main Seal Gasket Cover & Bolts GM Chevy LS Engine 635-518 12633579 12639250 |
This Sumyola Rear Main Seal Gasket Cover & Bolts is perfect for car owners who need a reliable replacement part for their GM Chevy LS Engine. It’s ideal for those with compatible vehicles like Chevrolet, GMC, Cadillac, Hummer, Pontiac, or Saab models, ensuring a perfect fit and long-lasting performance. |
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Partsflow Engine Gasket Set for GM for Chevrolet/for GMC Throttle Body TBI 5.7 Liter 350 Cubic Inch V8 Engines from 1987 Through 1995 OE#260-1269, KS2666 |
This Partsflow Engine Gasket Set is perfect for owners of GM Chevrolet or GMC vehicles with a 5.7 Liter 350 Cubic Inch V8 Engine from 1987 to 1995. It’s ideal for those needing a direct replacement for their factory part, not an upgrade. |
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ORAEVY BS 40640 Rear Main Seal Gasket Set- Compatible with GM LS LS1 LS6 LS2 LS3 LQ9 LQ4 4.8L 5.3L 5.7L 6.0L 6.2L Chevy Silverado Suburban Tahoe Trailblazer GMC Sierra |
This ORAEVY BS 40640 Rear Main Seal Gasket Set is perfect for car owners with GM LS engines like the Chevy Silverado, Tahoe, or GMC Sierra. It’s ideal for those needing a reliable, durable fix for their vehicle’s rear main seal. |
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Oil Pan Gasket & Rear Main Seal Kit Compatible with GM LS V8 Engines 4.8L 5.3L 5.7L 6.0L 6.2L – Fits Chevy GMC Cadillac Pontiac Saab Isuzu Replaces OS32241 OS30693R 12612350 BS 40640 12639249 89060436 |
This Oil Pan Gasket & Rear Main Seal Kit is perfect for car owners and mechanics who need a reliable, precise fit for their GM LS V8 engines. It’s ideal for fixing leaks and ensuring long-lasting performance in Chevy, GMC, Cadillac, and more. |
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Michigan Motorsports LS Rear Engine Cover with Main Seal Gasket & Bolts | Replaces GM 12639250 | Fits 4.8L 5.3L 5.7L 6.0L 6.2L LS Engines | Complete Rear Main Seal Kit |
This product is perfect for car and truck owners with GM LS engines. It’s ideal for engine rebuilds or rear main seal replacements. |
Detailed Reviews
Discover the top GM Engine Seal Gaskets that offer unbeatable performance and lasting quality. Our expertly curated list ensures you find the perfect fit for your vehicle’s needs. Get ready to experience enhanced engine reliability and peace of mind. Dive in to uncover the best options that promise superior sealing and durability.
1. FEL-PRO BS 40640 Engine Crankshaft Seal Kit for Chevrolet Silverado 1500

Keep your Chevrolet Silverado 1500 running smoothly with the FEL-PRO BS 40640 Engine Crankshaft Seal Kit. This kit is designed for a perfect fit. It ensures top performance and reliability.
This kit meets all original equipment specifications. It’s engineered for repair applications.
Trust unsurpassed quality for your vehicle. Get the fit, form, and function you need.
| Pros | Cons |
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Perfect For:
The FEL-PRO BS 40640 Engine Crankshaft Seal Kit is perfect for Chevrolet Silverado 1500 owners who need a reliable replacement. It’s also ideal for those with compatible Buick, Cadillac, or Isuzu models looking for a trusted, high-quality repair solution.
Ready to Purchase?
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2. AUTOBABA GEN 3 III LS Gasket Set Kit & LS Head Gaskets Compatible with 1999-2010 GM Chevy Silverado GMC Sierra 1500 2500 Engine LS1 LS6 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L Replace# 12558178 12551933 12611384

Upgrade your GM Chevy or GMC truck with the AUTOBABA GEN 3 III LS Gasket Set Kit. This kit provides essential head gaskets for 1999-2010 models. It ensures your engine runs smoothly and powerfully.
Experience superior sealing and lasting durability. These gaskets are built to last, keeping your engine in top shape.
| Pros | Cons |
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Perfect For:
This gasket set is perfect for GM Chevy Silverado and GMC Sierra owners who need a reliable replacement for their engine gaskets. It’s ideal for 1999-2010 models with 4.8L, 5.3L, 5.7L, or 6.0L engines.
Ready to Purchase?
3. GM Genuine Parts 15203889 Engine Oil Cooler Gasket

Keep your engine running smoothly with the GM Genuine Parts 15203889 Engine Oil Cooler Gasket. It prevents leaks in your vehicle’s components. Trust this part for reliable performance.
GM Engineers design and validate these parts for your Chevrolet, Buick, GMC, or Cadillac. They ensure safety and compatibility. Aftermarket parts may not meet the same standards.
This original equipment part uses updated materials and technologies. It works seamlessly with your GM vehicle’s systems. Choose this gasket for long-lasting quality.
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Perfect For:
This GM Genuine Parts Engine Oil Cooler Gasket is perfect for vehicle owners who want reliable, leak-free performance. It’s designed by GM engineers to fit your Chevrolet, Buick, GMC, or Cadillac perfectly.
Ready to Purchase?
4. Unaykolb Engine Full Gasket Set w/Seal Silicone for GM for Chevrolet/for GMC Throttle Body TBI 5.7 Liter 350 Cubic Inch V8 Engines from 1987 Through 1995

Revitalize your GM engine with the Unaykolb Engine Full Gasket Set. This premium kit is engineered for Chevrolet and GMC V8 engines, specifically the 5.7 Liter 350 Cubic Inch models from 1987 to 1995. Ensure a perfect fit and superior performance for your trusted ride.
Crafted from high-quality materials using advanced equipment, these gaskets are built to prevent leaks and deliver reliable sealing. You can drive with confidence, backed by our one-year warranty. It’s the smart choice for engine maintenance.
Get yours today! Experience the difference. Drive with peace of mind.
| Pros | Cons |
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Perfect For:
This Unaykolb Engine Full Gasket Set is ideal for owners of GM Chevrolet or GMC trucks with 5.7 Liter 350 V8 engines from 1987 to 1995. If you’re looking for a reliable, high-quality gasket set to keep your engine running smoothly, this is a great choice!
Ready to Purchase?
5. LOBIUTIYA 635-518 Rear Main Seal Kit with Oil Pan Gasket, 12612350 Oil Pan Gaskets for Chevy Silverado Suburban Tahoe Trailblazer GMC Sierra Yukon 4.8L 5.3L 6.0L 6.2L, 12637683

The LOBIUTIYA 635-518 Rear Main Seal Kit is a perfect fit for GM engines from 1999–2020. It’s designed for easy installation and long-lasting durability.
This kit includes everything you need for a leak-free seal. It’s made from premium materials to handle heat and oil. Ideal for repairs or maintenance.
| Pros | Cons |
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Perfect For:
This LOBIUTIYA Rear Main Seal Kit is perfect for anyone fixing oil leaks or doing engine repairs on their Chevy, GMC, Cadillac, or Buick with a 4.8L to 6.2L V8 engine. It’s easy to install and comes with everything you need for a leak-free seal.
Ready to Purchase?
6. Sumyola Rear Main Seal Gasket Cover & Bolts GM Chevy LS Engine 635-518 12633579 12639250

Keep your GM Chevy LS engine running smoothly with this Sumyola Rear Main Seal Gasket Cover & Bolts. It’s a direct replacement for part numbers 635-518, 12633579, and 12639250, ensuring a perfect fit for a wide range of Chevrolet, GMC, Cadillac, and other compatible vehicles.
This high-quality part comes from a factory with over 16 years of experience and IATF16949:2016 certification. It includes a one-year warranty and expert remote support for any installation or operational questions. If you’re unsure, just provide your VIN, and Sumyola will confirm compatibility for a hassle-free purchase.
| Pros | Cons |
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Perfect For:
This Sumyola Rear Main Seal Gasket Cover & Bolts is perfect for car owners who need a reliable replacement part for their GM Chevy LS Engine. It’s ideal for those with compatible vehicles like Chevrolet, GMC, Cadillac, Hummer, Pontiac, or Saab models, ensuring a perfect fit and long-lasting performance.
Ready to Purchase?
7. Partsflow Engine Gasket Set for GM for Chevrolet/for GMC Throttle Body TBI 5.7 Liter 350 Cubic Inch V8 Engines from 1987 Through 1995 OE#260-1269, KS2666

The Partsflow Engine Gasket Set is designed for GM Chevrolet and GMC vehicles. It fits Throttle Body TBI 5.7 Liter 350 Cubic Inch V8 Engines from 1987 to 1995. This set ensures a perfect match for your engine.
It includes essential parts like the Exhaust Valve Stem Seal. The kit meets OE specifications and works as a direct replacement. You get reliable performance without upgrades.
We offer a one-year warranty for peace of mind. Our aftermarket parts are new and quality-checked. Contact us for any satisfactory solutions.
| Pros | Cons |
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Perfect For:
This Partsflow Engine Gasket Set is perfect for owners of GM Chevrolet or GMC vehicles with a 5.7 Liter 350 Cubic Inch V8 Engine from 1987 to 1995. It’s ideal for those needing a direct replacement for their factory part, not an upgrade.
Ready to Purchase?
8. ORAEVY BS 40640 Rear Main Seal Gasket Set- Compatible with GM LS LS1 LS6 LS2 LS3 LQ9 LQ4 4.8L 5.3L 5.7L 6.0L 6.2L Chevy Silverado Suburban Tahoe Trailblazer GMC Sierra

The ORAEVY BS 40640 Rear Main Seal Gasket Set is perfect for GM LS engines. It fits 4.8L to 6.2L models like Chevy Silverado and GMC Sierra. This set is built to last and meets high standards.
It works with many vehicles from 1999 to 2020. The gasket set handles high heat and pressure well. It also comes with free gloves and a cleaning brush.
You get 12 months of warranty with this set. If you have any issues, the team is ready to help. This reliable product keeps your engine sealed tight.
| Pros | Cons |
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Perfect For:
This ORAEVY BS 40640 Rear Main Seal Gasket Set is perfect for car owners with GM LS engines like the Chevy Silverado, Tahoe, or GMC Sierra. It’s ideal for those needing a reliable, durable fix for their vehicle’s rear main seal.
Ready to Purchase?
9. Oil Pan Gasket & Rear Main Seal Kit Compatible with GM LS V8 Engines 4.8L 5.3L 5.7L 6.0L 6.2L – Fits Chevy GMC Cadillac Pontiac Saab Isuzu Replaces OS32241 OS30693R 12612350 BS 40640 12639249 89060436

This Oil Pan Gasket & Rear Main Seal Kit is compatible with GM LS V8 engines, ranging from 4.8L to 6.2L. It includes all essential components for a complete and convenient repair, ensuring precise fit and reliable performance.
The kit replaces multiple part numbers and fits popular Chevy, GMC, Cadillac, and other models. Check your vehicle’s details before buying. Your satisfaction is our priority—contact us anytime for help.
| Pros | Cons |
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Perfect For:
This Oil Pan Gasket & Rear Main Seal Kit is perfect for car owners and mechanics who need a reliable, precise fit for their GM LS V8 engines. It’s ideal for fixing leaks and ensuring long-lasting performance in Chevy, GMC, Cadillac, and more.
Ready to Purchase?
10. Michigan Motorsports LS Rear Engine Cover with Main Seal Gasket & Bolts | Replaces GM 12639250 | Fits 4.8L 5.3L 5.7L 6.0L 6.2L LS Engines | Complete Rear Main Seal Kit

The Michigan Motorsports LS Rear Engine Cover is a complete kit for your LS engine. It includes everything you need: the rear engine cover, main seal, gasket, and bolts. This kit is perfect for rear main seal service or engine rebuilds.
It fits GM LS engines like 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L. It replaces GM part 12639250 and ensures a reliable fit for your engine.
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Perfect For:
This product is perfect for car and truck owners with GM LS engines. It’s ideal for engine rebuilds or rear main seal replacements.
Ready to Purchase?
Buying Guide
Choosing the best GM engine seal gaskets keeps your engine strong and leak-free. These parts are vital for performance. Our guide makes it easy to find the perfect fit.
Engaging Experience:
Discover top-quality seals that ensure reliable performance and lasting durability. Drive with confidence knowing your engine is protected.
Factors to Consider When Buying:
– Compatibility: Check if the gasket fits your GM engine model and year. Exact match ensures perfect performance.
– Material Quality: Look for premium materials that handle heat, oil, and pressure. High-quality gaskets last longer.
– Brand Reputation: Choose trusted brands like FEL-PRO, GM Genuine Parts, or AUTOBABA. Reliable brands offer better quality.
– Warranty: Opt for gaskets with a warranty. It gives peace of mind and shows the brand’s confidence in their product.
– Ease of Installation: Select kits with clear instructions or included tools. Easy installation saves time and effort.
– Price vs. Value: Compare prices but focus on value. Cheaper options may not offer long-term reliability.
– Customer Reviews: Read reviews to see how others rate the product. Positive feedback is a good sign.
Final Tip: Always verify compatibility with your vehicle’s VIN or model details. This ensures a hassle-free purchase.