Rear Main Seals (25pk) - SBC 2pc.

The Rear Main Seals (25pk) - SBC 2pc. by FEL-PRO is the professional-grade solution for preventing oil leakage at the crankshaft on Small Block Chevy engines. Whether you're rebuilding a classic muscle car, refreshing a street rod, or maintaining a high-mileage performance build, rear main seal failure is one of the most frustrating leaks to diagnose and repair. This 25-pack offers builders and shops the economy and convenience of bulk purchasing, eliminating repeat orders during production runs or fleet maintenance cycles.

FEL-PRO's two-piece design allows installation without complete engine removal, a critical advantage for in-frame rebuilds and restorations. The dual-piece configuration uses elastomer material engineered to compress uniformly against the crankshaft journal, creating a reliable seal that resists both pressure and temperature cycles common in street and racing applications. The compound formulation maintains flexibility across engine operating ranges, preventing the hardening and cracking that can occur with inferior or aged seals—a common failure point in vintage engine restarts.

Mechanics and engine builders favor FEL-PRO's rear main seals for applications ranging from mild street engines to carbureted and fuel-injected performance builds. The two-piece configuration is standard for most SBC applications built before late-model integrated designs, making compatibility straightforward across generations of 262ci through 400ci Small Block variants. Stock up on this 25-pack for shop inventory, and eliminate downtime from seal failures that compromise oil retention and threaten engine cleanliness during critical break-in periods.