ARP 129-2503 Crankshaft Balancer Bolt.
Optimized for enhanced reliability and increased strength.
For 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
GM 6.6L Duramax LB7 LLY LBZ LMM LML L5P
2001-2018 GM 6.6L DURAMAX
- Increased Strength
- Increased Reliability
- 200,000 PSI Tensile Strength
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, and 8740 parallel ground washers. 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.