2004-2018 Cummins ARP Main Stud Kit (247-5403)

ARP recommends the use of main studs over bolts whenever possible for several key reasons. First is the ability to obtain more accurate torque readings because studs don't "twist" into the block. All clamping forces are on one axis. By the same token, there is less force exerted on the block threads, which contributes to improved block life. Finally, studs make for easier engine assembly and proper alignment of caps every time. Add strength to your bottom end by upgrading your main cap bolts to ARP studs. Main cap studs are the perfect addition to engine builds receiving Billet Main Caps.

Part Number: 247-5403

• Manufactured From 8740 Chrome Moly Steel
• Heat Treated In-House To 200,000 Pounds Per Square Inch Tensile Strength
• Threads rolled after heat treat for added fatigue strength
• All Kits Come Complete With Hardened Parallel-Ground Washers And High Quality Nuts
• Eliminates Main Cap Walk And Fretting, And Protects The Threads In Your Engine Block

• Requires a factory girdle (block stiffener plate)

• ARP installation instructions (PDF)

Don't see your question? Ask us anything about this product.