Introducing the ARP 247-5404 Diesel Main Stud Kit, engineered for unmatched strength and reliability. Ideal for 3.9 Cummins 4BT engines, this premium kit features ARP 2000 material with a tensile strength of 220,000 PSI, ensuring superior performance and durability. Each stud is precision-manufactured, centerless ground, and heat treated for optimal fatigue resistance and concentricity. The kit includes chrome moly steel 12-point nuts, chrome moly hardened washers, and a 1/2 oz. Ultra-Torque assembly lube. With its black oxide coating for added corrosion resistance, the ARP 247-5404 provides secure mounting for your engine’s main bearing caps, making it the ideal choice for high-performance and reliable engine builds.

• 220,000 PSI tensile strength for exceptional durability
• Made from ARP 2000 material for superior performance
• Precision-manufactured, centerless ground, and heat treated
• Includes chrome moly nuts, hardened washers, and Ultra-Torque lube