Looking for the best 2-piece rear main seal to keep your engine leak-free? We’ve rounded up the top 10 options to help you find the perfect fit for your vehicle, with easy installation and expert support to keep your engine running like new.
Keeping your engine leak-free is crucial for its performance and longevity. A 2-piece rear main seal is a vital component that prevents oil leaks, ensuring your vehicle runs smoothly. Whether you’re restoring a classic car or maintaining a daily driver, choosing the right seal is essential.
From Chevy to Ford, there’s a perfect seal for every engine. These seals are designed to fit specific models and years, offering a reliable and durable solution. Made from high-quality materials like silicone, fluoroelastomer, and polyacrylate, they withstand heat and pressure, keeping your engine protected.
Discover the best 2-piece rear main seals that fit your vehicle perfectly. With easy installation and expert support, you’ll find the ideal match for your needs. Let’s dive in and explore the top options to keep your engine running like new!
List of Top 10 2-Piece Rear Main Seal
| Image | Title | Best For | Price |
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LowPricedAutoParts Premium 2-Piece Offset Double Lip Rear Main Crankshaft Seal – Fits Chevy Small Block 230 250 350 C10 Camaro Chevelle Impala 1959-1985 & More |
This product is perfect for car owners who want to fix leaks and keep their engines clean. It’s great for classic Chevy and GM models, ensuring reliable performance. |
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75-79 Oil Pan Gasket Set for SB Chevy – Thick Front Seal & Steel Core Construction | Designed for 2-Piece Rear Main Seal Blocks | Fits for 265/283/327/350/383/400 CI Engines (Driver Side Dipstick) |
This 75-79 Oil Pan Gasket Set is perfect for SB Chevy owners with 2-piece rear main seal blocks. It’s ideal for engines like 265, 283, 327, 350, 383, and 400 CI with a driver-side dipstick. |
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Rear Main Seal 2-Piece Silicone | compatible with Small Block Chevy 400 w/Align Hone | Each |
This Rear Main Seal is perfect for car owners who want a reliable and easy fix for their Small Block Chevy 400. It’s great for daily drivers and high-stress conditions, ensuring a secure, long-lasting fit with no hassle. |
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SCE Gasket 11105 Rear Main Seal – 2 Piece |
The SCE Gasket 11105 Rear Main Seal is perfect for car owners who need a reliable replacement part. It’s easy to install and fits specific vehicle models. |
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LowPricedAutoParts Premium Double Lip Rear Main Crankshaft Seal (2-Piece Set) – Fits Jeep Cherokee Wrangler Grand Cherokee 4.0L 1987-1999 & More |
This premium rear main crankshaft seal set is perfect for Jeep owners with 1987–1999 models like the Cherokee, Wrangler, or Grand Cherokee. It’s ideal for preventing oil leaks and keeping your engine clean and reliable, especially during repairs or rebuilds. |
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JEGS Rear Main Seal | Fits 1959-1985 Small Block Chevy (Except 400 CID) &L6/V6 Engines | 2-Piece | Fluoroelastomer | 1 Per Package | Made in USA |
This JEGS Rear Main Seal is perfect for anyone rebuilding a classic Chevy engine. It’s a must-have for keeping oil where it belongs and fits 1959-1985 small block Chevy engines (except 400 CID) and L6/V6 engines. |
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75-79 for Small Block Chevy Oil Pan Gasket with Thick Front Seal | Compatible for All SB Chevy Engines 265 283 327, Steel Core Gasket for 2-Piece Rear Main Seal Blocks w/Driver Side Dipstick |
This oil pan gasket is perfect for car enthusiasts and mechanics working on Small Block Chevy engines. It’s ideal for 265, 283, 327, 350, 383, and 400 engines with a driver-side dipstick and 2-piece rear main seal blocks. |
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SCE Gaskets SCE Gasket 21105 Viton Rear Main Seal – 2 Piece |
This SCE Gasket 21105 Viton Rear Main Seal is perfect for car owners who need a reliable replacement part. It’s easy to install and fits specific vehicle models. |
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Speedway Motors 153 Tooth Flexplate for Two-Piece Rear Main Seal Motors Internal Balance Design with Dual 9-3/4 and 10-3/4 Inch Converter Bolt Patterns, Compatible with 55–85 Chevy |
This flexplate is perfect for car enthusiasts restoring or upgrading 1955–1985 Chevy small block engines. It’s ideal for those needing a reliable, durable part for automatic transmissions or engine installs. |
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LowPricedAutoParts Premium 2-Piece Polyacrylate Rear Main Crankshaft Seal – Fits Ford Mustang Torino Galaxie 500 5.8L 351 Windsor 1969-1979 & More |
This rear main crankshaft seal is perfect for classic car owners who want to keep their Ford or Mercury running smoothly. It’s ideal for muscle car, wagon, or truck enthusiasts with 1969–1979 models needing a reliable, leak-free seal. |
Detailed Reviews
Discover the top 10 2-Piece Rear Main Seals, carefully selected through expert analysis and customer feedback. Each product is reviewed for performance, durability, and value, ensuring you find the perfect fit for your needs. Whether you’re restoring a classic or maintaining a daily driver, this guide makes choosing the best seal simple and confident.
1. LowPricedAutoParts Premium 2-Piece Offset Double Lip Rear Main Crankshaft Seal – Fits Chevy Small Block 230 250 350 C10 Camaro Chevelle Impala 1959-1985 & More

Stop rear main leaks and keep your classic Chevy running strong with this premium 2-piece crankshaft seal. Designed for small block and inline-6 engines, it fits popular models like the Camaro, Chevelle, and Impala from 1968–1985.
Made from high-temp silicone, this seal prevents oil leaks that can damage your bellhousing or clutch. Its OE-style design ensures a perfect fit and easy installation, restoring leak-free performance to your engine.
Direct replacement, reliable power, preserved value.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for car owners who want to fix leaks and keep their engines clean. It’s great for classic Chevy and GM models, ensuring reliable performance.
Ready to Purchase?
2. 75-79 Oil Pan Gasket Set for SB Chevy – Thick Front Seal & Steel Core Construction | Designed for 2-Piece Rear Main Seal Blocks | Fits for 265/283/327/350/383/400 CI Engines (Driver Side Dipstick)

Keep your SB Chevy engine running smoothly with this premium oil pan gasket set. It’s built tough for 2-piece rear main seal blocks from 1975 to 1979.
This gasket features a thick front seal and steel core construction. It ensures a tight seal and proper torque. Get yours today for a reliable fix.
| Pros | Cons |
|---|---|
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Perfect For:
This 75-79 Oil Pan Gasket Set is perfect for SB Chevy owners with 2-piece rear main seal blocks. It’s ideal for engines like 265, 283, 327, 350, 383, and 400 CI with a driver-side dipstick.
Ready to Purchase?
3. Rear Main Seal 2-Piece Silicone | compatible with Small Block Chevy 400 w/Align Hone | Each

The Rear Main Seal 2-Piece Silicone is a direct OE replacement for your Small Block Chevy 400. It matches factory specifications to restore your engine’s original look and functionality. This seal is quality tested for reliable performance.
Easy to install, this seal is designed for direct-fit compatibility, minimizing installation time with no modifications needed. Its secure, high-performance fit ensures it can withstand daily use and high-stress driving conditions.
Built from durable materials, this seal offers long-lasting strength and dependability. It’s a trusted construction that you can rely on for your engine’s needs.
| Pros | Cons |
|---|---|
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Perfect For:
This Rear Main Seal is perfect for car owners who want a reliable and easy fix for their Small Block Chevy 400. It’s great for daily drivers and high-stress conditions, ensuring a secure, long-lasting fit with no hassle.
Ready to Purchase?
4. SCE Gasket 11105 Rear Main Seal – 2 Piece

The SCE Gasket 11105 Rear Main Seal is a 2-piece auto part. It comes in a compact package, measuring just 5.82″ x 4.45″ x 2.16″. This lightweight item weighs only 0.7 lbs, making it easy to handle.
Each package contains one seal, perfect for your vehicle needs. Its simple design ensures a quick and easy installation.
| Pros | Cons |
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Perfect For:
The SCE Gasket 11105 Rear Main Seal is perfect for car owners who need a reliable replacement part. It’s easy to install and fits specific vehicle models.
Ready to Purchase?
5. LowPricedAutoParts Premium Double Lip Rear Main Crankshaft Seal (2-Piece Set) – Fits Jeep Cherokee Wrangler Grand Cherokee 4.0L 1987-1999 & More

Keep your Jeep’s engine clean and leak-free with this premium rear main crankshaft seal. It fits 1987–1999 Jeep models with 4.0L engines, ensuring a tight seal and reliable performance. Made from high-quality material, it prevents oil leaks and clutch contamination.
This 2-piece set is a direct replacement for easy installation. LowPricedAutoParts offers expert support to confirm the perfect fit for your vehicle.
| Pros | Cons |
|---|---|
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Perfect For:
This premium rear main crankshaft seal set is perfect for Jeep owners with 1987–1999 models like the Cherokee, Wrangler, or Grand Cherokee. It’s ideal for preventing oil leaks and keeping your engine clean and reliable, especially during repairs or rebuilds.
Ready to Purchase?
6. JEGS Rear Main Seal | Fits 1959-1985 Small Block Chevy (Except 400 CID) &L6/V6 Engines | 2-Piece | Fluoroelastomer | 1 Per Package | Made in USA

The JEGS Rear Main Seal is a must-have for anyone building or rebuilding a 1959-1985 small block Chevy engine (except 400 CID) or L6/V6 engines. It’s made in the USA and designed to keep oil inside the engine, where it belongs.
This 2-piece seal is constructed from high-quality fluoroelastomer material, ensuring durability and reliability. Each package includes one set, with other seals and gaskets available separately.
Perfect for engine projects, this seal is easy to install and built to last. Keep your engine running smoothly with this essential component.
| Pros | Cons |
|---|---|
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Perfect For:
This JEGS Rear Main Seal is perfect for anyone rebuilding a classic Chevy engine. It’s a must-have for keeping oil where it belongs and fits 1959-1985 small block Chevy engines (except 400 CID) and L6/V6 engines.
Ready to Purchase?
7. 75-79 for Small Block Chevy Oil Pan Gasket with Thick Front Seal | Compatible for All SB Chevy Engines 265 283 327, Steel Core Gasket for 2-Piece Rear Main Seal Blocks w/Driver Side Dipstick

This oil pan gasket is designed for Small Block Chevy engines from 1975 to 1979. It fits all SB Chevy engines like the 265, 283, 327, 350, 383, and 400. The thick front seal ensures a reliable fit for your engine.
The steel core rails help apply the right torque during installation. It’s compatible with 2-piece rear main seal blocks and driver-side dipstick setups. This gasket is built to last and perform well.
The package includes one oil pan gasket, exactly as shown in the picture. It’s a high-quality replacement for part number OS34509T.
| Pros | Cons |
|---|---|
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Perfect For:
This oil pan gasket is perfect for car enthusiasts and mechanics working on Small Block Chevy engines. It’s ideal for 265, 283, 327, 350, 383, and 400 engines with a driver-side dipstick and 2-piece rear main seal blocks.
Ready to Purchase?
8. SCE Gaskets SCE Gasket 21105 Viton Rear Main Seal – 2 Piece

SCE Gaskets offers a reliable solution for your vehicle’s needs. The 21105 Viton Rear Main Seal is a high-quality auto part. It ensures a tight seal, keeping your engine running smoothly.
This 2-piece gasket is designed for easy installation. Its compact size (5.82″ L x 4.45″ W x 2.16″ H) and lightweight (0.7 lb) make it convenient to handle. The Viton material provides durability and resistance to heat and chemicals.
With SCE Gaskets, you get a trusted brand and a product that meets industry standards. It’s a cost-effective choice for your car’s maintenance.
| Pros | Cons |
|---|---|
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Perfect For:
This SCE Gasket 21105 Viton Rear Main Seal is perfect for car owners who need a reliable replacement part. It’s easy to install and fits specific vehicle models.
Ready to Purchase?
9. Speedway Motors 153 Tooth Flexplate for Two-Piece Rear Main Seal Motors Internal Balance Design with Dual 9-3/4 and 10-3/4 Inch Converter Bolt Patterns, Compatible with 55–85 Chevy

Rev up your classic Chevy’s performance with the Speedway Motors 153 Tooth Flexplate! This essential part is engineered for 1955–1985 Compatible with Chevy small block engines that feature a two-piece rear main seal and internal balance. Get ready for smooth, reliable operation!
Experience unmatched installation flexibility thanks to the dual converter bolt patterns. This flexplate boasts both 9-3/4 inch and 10-3/4 inch options, ensuring a perfect fit for your setup. Plus, its durable steel construction guarantees long-lasting strength for your engine or transmission.
This is a non-SFI flexplate. It has a 2-1/2 inch center hole. It’s sold individually.
| Pros | Cons |
|---|---|
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Perfect For:
This flexplate is perfect for car enthusiasts restoring or upgrading 1955–1985 Chevy small block engines. It’s ideal for those needing a reliable, durable part for automatic transmissions or engine installs.
Ready to Purchase?
10. LowPricedAutoParts Premium 2-Piece Polyacrylate Rear Main Crankshaft Seal – Fits Ford Mustang Torino Galaxie 500 5.8L 351 Windsor 1969-1979 & More

The LowPricedAutoParts Premium 2-Piece Polyacrylate Rear Main Crankshaft Seal is a perfect fit for classic Ford and Mercury models. It works with 1969–1979 cars like the Mustang, Torino, and Cougar. Always check your VIN to make sure it matches.
This seal stops rear main leaks and protects your engine. Its polyacrylate material resists heat and oil. It’s built to last for long-term use.
Get expert support from LowPricedAutoParts for a perfect fit. Their team helps you verify compatibility with ease. Professional installation is recommended for best results.
| Pros | Cons |
|---|---|
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Perfect For:
This rear main crankshaft seal is perfect for classic car owners who want to keep their Ford or Mercury running smoothly. It’s ideal for muscle car, wagon, or truck enthusiasts with 1969–1979 models needing a reliable, leak-free seal.
Ready to Purchase?
Buying Guide
Keeping your engine leak-free is key to its performance. A 2-piece rear main seal is a vital part that stops oil leaks, keeping your vehicle running smoothly.
Choosing the right seal can be easy and rewarding. Whether you’re fixing a classic car or a daily driver, the perfect seal is out there. Let’s explore what to look for when buying the best 2-piece rear main seal.
Here are the factors to consider:
- Compatibility: Make sure the seal fits your vehicle’s make, model, and year. Check your engine type and specifications for a perfect match.
- Material: Look for high-quality materials like silicone, fluoroelastomer, or polyacrylate. These withstand heat and pressure, ensuring durability.
- Ease of Installation: Choose a seal with an OE-style design for easy installation. Some come with expert support to guide you.
- Durability: Opt for seals built to last. High-temp resistance and long-lasting strength are essential for reliable performance.
- Brand Reputation: Go for trusted brands known for quality. Expert support and industry standards ensure you’re getting a reliable product.
- Price and Value: Balance cost with quality. A cost-effective choice doesn’t mean compromising on performance or longevity.
With these factors in mind, you’ll find the best 2-piece rear main seal to keep your engine running like new!