SB Chevy Rear Main 2pc. 1959-1985

The SB Chevy Rear Main 2pc. 1959–1985 is a two-piece synthetic rubber rear main seal specifically engineered for small-block Chevrolet engines. This seal plays a critical role in preventing oil leakage at the crankshaft's rear exit point, which is essential for maintaining engine health and preventing oil loss during normal operation. Whether you're rebuilding a classic muscle car or performing routine engine maintenance, a properly installed rear main seal is crucial for long-term reliability.

FEL-PRO's two-piece design allows for straightforward installation without requiring complete engine removal, which is a significant advantage over one-piece alternatives. The synthetic rubber composition provides superior heat resistance and durability compared to traditional cork or rope seals, maintaining its elasticity across the operating temperature range of small-block applications. The engineered fit of the 2912 seal ensures optimal contact with the crankshaft surface, minimizing friction while creating an effective barrier against oil seepage.

Restoration enthusiasts, engine builders, and DIY mechanics will benefit most from this FEL-PRO seal when addressing oil pan removal or transmission work on small-block Chevy platforms. Its compact dimensions and lightweight construction make handling and positioning straightforward during installation, ensuring a hassle-free experience for users. This seal is a reliable choice for anyone looking to maintain or restore a classic small-block Chevrolet engine.