Rear Main Seal SBC 400 w/Align Hone - 2-Piece

The Rear Main Seal SBC 400 w/Align Hone - 2-Piece from SCE Gaskets is engineered for Small Block Chevy engines requiring reliable crankshaft sealing at the rear of the block. This two-piece silicone design replaces OEM seals that have failed or degraded, preventing oil leakage that can compromise engine performance and cleanliness. Engine builders, hot rodders, and mechanics rely on this seal when performing block rebuilds, engine swaps, or routine maintenance on SBC platforms.

Manufactured from premium silicone material, the Rear Main Seal SBC 400 w/Align Hone - 2-Piece delivers superior durability and heat resistance compared to traditional rubber seals. The two-piece construction allows for easier installation without full engine disassembly, while the integral align hone feature ensures precise seating and concentricity with the crankshaft. This design minimizes leakage paths and maintains a consistent compression fit across the entire sealing surface, even under high RPM operation and thermal cycling.

Technicians and enthusiasts working on Small Block Chevy 400 engines will find this seal ideal for both stock restorations and high-performance builds. Installation is straightforward when the crankshaft is accessible, and the two-piece configuration makes it suitable for in-frame repairs. Verify crankshaft rear flange diameter and engine block compatibility before ordering to ensure proper fit and seal performance.