Harmonic Balancer Bolt, 27mm 12-Point Head, 4.325 in. UHL, Chromoly, Black Oxide, LS Gen. III/IV, Chevrolet, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, Each

Part Number: ARP-234-2503

4.94 out of 5 stars ( 187 )

Estimated Ship Date: Monday 10/19/2026 if shipped by air

Balancer Bolt, Chromoly, Black Oxide, Chevrolet, Each

Part Number: ARP-234-2504

4.31 out of 5 stars ( 13 )

Estimated Ship Date: Monday 10/19/2026 if shipped by air

Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, All Gen. 3/4 Chevy, 4.8, 5.3, 6.0L, 6.2L, 7.0L LS1, LS6, Each

Part Number: SUM-910257

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 10/19/2026 if shipped by air