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ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.
When building a high-performance 3.9L 4BT Cummins engine, the integrity of your main caps is paramount. This Auto Racing Products (ARP) Main Stud Kit is engineered to provide superior clamping force compared to standard factory bolts, preventing main cap walk and ensuring your crankshaft remains perfectly aligned under extreme load.
Constructed from premium 8740 chromoly steel, these studs are heat-treated to provide exceptional tensile strength. The black oxide finish offers superior corrosion resistance, ensuring longevity in harsh diesel environments. Each kit features high-quality 12-point nuts and hardened washers to distribute load evenly across the main cap surface.
Whether you are performing a complete engine rebuild or upgrading for increased boost and power, these studs offer the peace of mind required for high-performance diesel applications. Trust in the industry-leading quality of ARP fasteners to keep your bottom end secure during every pull. Find your essential engine building components at GGCRACING.
Other popular Auto Racing Products products customers consider together:
ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.
When building a high-performance 3.9L 4BT Cummins engine, the integrity of your main caps is paramount. This Auto Racing Products (ARP) Main Stud Kit is engineered to provide superior clamping force compared to standard factory bolts, preventing main cap walk and ensuring your crankshaft remains perfectly aligned under extreme load.
Constructed from premium 8740 chromoly steel, these studs are heat-treated to provide exceptional tensile strength. The black oxide finish offers superior corrosion resistance, ensuring longevity in harsh diesel environments. Each kit features high-quality 12-point nuts and hardened washers to distribute load evenly across the main cap surface.
Whether you are performing a complete engine rebuild or upgrading for increased boost and power, these studs offer the peace of mind required for high-performance diesel applications. Trust in the industry-leading quality of ARP fasteners to keep your bottom end secure during every pull. Find your essential engine building components at GGCRACING.
Other popular Auto Racing Products products customers consider together:
