Complete bolt kit - Includes high-grade harmonic balancer bolt, washer, and lock washer for secure installation.
Precision fitment - Designed specifically for 1965-1972 Big Block Che--vy engines (366, 396, 402, 427, 454).
Heavy-duty construction - Features Grade 8 steel hardware with 1/2"-20 threads for maximum strength and durability.
Proper dimensions - 1.500" under head length with 3/4" hex head and 1/4" thick washer for correct fitment.
Installation note - May not fit aluminum pulleys - please verify your pulley type before purchase.
Description
This heavy-duty bolt kit provides essential hardware for Big Block Ch--evy engines (366/396/402/427/454) from 1965-1972. The set includes a Grade 8 steel harmonic balancer bolt (1/2"-20 threads) with matching washer and lock washer. With 1.500" under head length and 3/4" hex head, these bolts offer reliable performance for your engine's harmonic balancer and pulley system.
