Description
ARP main studs replace the factory main cap bolts to stop main cap walk and fretting, protect the block threads and keep the bottom end aligned under high cylinder pressure. Because studs don't twist into the block while torquing, clamp load is more accurate and repeatable than with bolts.
ARP part number: 247-5404
Application: Cummins 4BT 3.9L
Material: ARP2000 alloy (approx. 220,000 psi tensile strength)
Fitment
- Cummins 4BT 3.9L
Features
- Proprietary arp 2000 material
- Rated at 220,000 psi tensile strength
- Includes chrome moly steel 12-point nuts
- Includes 1/2 oz. ultra-torque assembly lube
- Chrome moly hardened & parallel ground washers
- Black oxide coating for added corrosion resistance
- Centerless ground to ensure they are perfectly concentric
- Heat-treated prior to thread rolling and machining for optimum fatigue strength
What's Included
- Main studs
- Nuts
- Hardened parallel-ground washers
- ARP assembly lubricant
Always follow ARP's published torque values and use the supplied ARP lubricant for accurate preload.
