GM LS Series Rear Main Seal 1-Piece

Options

$35.47
MSRP: $38.90
You save $3.43
Or

Trusted By Over 250,000+ Happy Customers Serving outdoor enthusiasts nationwide

Info

SKU:SCE21905 ,UPC:

SKU: SCE21905

UPC: 679002125853

MPN: 21905

Info

SKU:
SCE21905
UPC:
679002125853
MPN:
21905

Description

The SCE Gaskets GM LS Series Rear Main Seal 1-Piece is a factory-style replacement seal specifically engineered for Chevrolet small-block LS engine platforms. This product is ideal for those undergoing rebuilds, restorations, or engine swaps, ensuring a reliable seal for both stock and modified applications.

The one-piece design of this rear main seal eliminates the two-piece assembly common in older applications, reducing complexity and potential leak points. SCE Gaskets focuses on using a durable elastomer compound that withstands sustained heat cycles, making it suitable for high-performance environments where oil temperatures can exceed 250°F.

This rear main seal is essential for anyone serious about maintaining engine integrity during teardown or upgrade work. It is compatible with LS1, LS2, LS3, LS7, LQ4, LQ9, and all LS-series engines, making it a versatile choice for various applications.

SpecificationDetail
MPN / Part Number
21905
UPC
679002125853
SKU
SCE21905
Dimensions
5.6 x 0.55 x 7.9 in
Weight
0.18 lbs
Product Type
Rear Main Seal – One-Piece Design
Compatibility
LS1, LS2, LS3, LS7, LQ4, LQ9, and All LS-Series Engines
Seal Configuration
Single-Piece (Eliminates Two-Piece Assembly Leaks)
Material
Precision Elastomer Compound, Heat-Resistant Formulation
Temperature Rating
250°F+ Sustained Oil Temperature Capability
Installation
During Engine Assembly; Proper Crank Surface Finish Required

WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.