M42 ARP Main Bolt Set

Upgrade your M42's bottom end with ARP 8740 chromoly high-strength main bolts — a proven alternative to reusing your factory hardware, and a budget-friendly option compared to the ARP main stud kit.

• Higher strength than OEM crankshaft main bolts
• ARP 8740 chromoly steel construction
• Set of 10 bolts and 10 washers
• Includes ARP fastener lubricant
• Fits all M42 engines
• Replaces BMW part number 11111735525

For torque specifications, see the Spec Sheet.

These kits are assembled in-house by BimmerHeads — and we use them on the majority of our own engine builds.