ARP Harmonic Balancer Bolt Kit for Chevy/GMC (2001-18) 6.6L Duramax

The ARP 129-2503 Balancer Bolt Kit for your 2001-2018 GM 6.6L Duramax is optimized for enhanced reliability and increased strength. Each kit includes Pro Series balancer bolts that are rated at 200,000 psi tensile strength. ARP bolts are cold forged to ensure molecular integrity, heat treated prior to thread rolling and machining and designed to exceed the OEM fasteners in strength and durability. Optimum design, enhanced reliability and increased strength are the main attributes of ARPs Pro Series balancer bolt kits.