Cast Iron Flywheel - GM 153 Tooth Int. Balance

The Pioneer Cast Iron Flywheel - GM 153 Tooth Int. Balance is a direct replacement component designed for Chevy V8 engines that require an OEM or performance-level flywheel. This flywheel is essential for restoring engine dynamics after transmission work, engine swaps, or when the original flywheel is compromised.

Constructed from cast iron, this internally-balanced flywheel weighs 17.95 lbs and features a two-piece seal design that accommodates the crankshaft rear seal interface. This design helps prevent oil weepage and maintains cleanliness in the engine compartment during extended use. The 153-tooth configuration is critical for proper starter motor engagement in compatible small-block and mid-size Chevrolet V8 applications.

Engine builders, transmission rebuilders, and mechanics performing V8 restorations will find this flywheel indispensable for maintaining original equipment specifications. Its robust construction provides thermal stability under sustained operation and resists warping during repeated engagement cycles, ensuring reliable performance.