2011-2016 Duramax Common Rail 14mm Gorilla Girdle (PDM-06037)

The Gorilla Girdle is the strongest girdle on the market — a thick, fully-machined main cap stabilizer for the 2011-2016 6.6L Duramax LML bottom end that runs the XXL ARP 14mm main studs.

Under high RPM and high horsepower, the block itself will flex, which causes main cap walk and pulls the piston and crankshaft bores out of alignment. The Gorilla Girdle strengthens and stabilizes the bottom end by evenly distributing load across the main caps, holding things in line where the stock setup gives up. Part Number: PDM-06037

• Strongest girdle on the market
• Utilizes XXL ARP 14mm main studs
• Evenly distributes load across the main caps
• Prevents main cap walk and bore misalignment under high RPM/HP

• 14mm main stud version — for builds using upgraded 14mm studs