Industrial Injection PDM-06020 Gorilla Girdle with ARP XL Main Studs - 12mm

The Industrial Injection PDM-06020 12mm Gorilla Girdle with ARP XL Main Studs is engineered to dramatically increase block rigidity and reinforcement for 2003-2018 Dodge 5.9L and 6.7L Cummins engines. Under high RPM with higher horsepower engines, the block itself will actually flex, causing main cap walk and improper alignment of the piston and crankshaft bores. By joining all of the main bearing caps and oil pan rail together, the Gorilla girdle allows you to make more power by decreasing friction in the main bearing bore and overall alignment of the piston and crankshaft bores.

Key Features:

• Strengthens and stabilizes the bottom end of the cylinder block, evenly distributing the load across the main bearing caps and virtually eliminating main cap walk
• Includes 12mm ARP 2000 main studs rated to torque down at 125 ft-lbs
• Comes with premium ARP 12mm main studs and all necessary spacers, nuts, and hardware for complete installation
• Ideal for extreme load, high-horsepower, and aggressive towing builds
• Helps distribute clamping force evenly across all mains, minimizing flex and maintaining crankshaft alignment during heavy acceleration or sustained high-load conditions

Complete Kit Includes:

• 1 Gorilla Girdle
• 14 top spacers (large hole)
• 12 bottom spacers (small hole)
• 1 rear main spacer bar
• 2 rear main stud nuts (12 point)
• 12 main stud nuts (Nylock)
• ARP XL Main Studs

Important Installation Note: On certain 6.7L Cummins engines that come factory with a windage tray instead of a factory girdle, you will be required to get the early style longer oil pickup tube bolts as well as an early style oil pickup tube. Cummins oil pickup tube part number: 3949692 (qty 1), Cummins oil pickup tube bolt part number: 3902460 (qty 2).

This complete girdle kit is essential for any Cummins owner looking to build serious power or ensure bulletproof reliability under extreme operating conditions.