14mm Gorilla Girdle

Features:

• Fits 2001–2010 6.6L Duramax engines
• Compatible with LB7, LLY, LBZ, and LMM
• Uses massive 14mm ARP main studs
• 1/2-inch thick high-strength steel construction
• Reinforces lower end for extreme durability
• Ideal for high-horsepower engine builds
• Helps prevent main cap movement under load
• Strongest Duramax girdle available on the market
• Custom fit for factory block and pan

Beef Up Your Bottom End with Confidence

If you're building serious power with your 2001–2010 Duramax, keeping the bottom end together becomes critical—and that’s where the Industrial PDM-06035 14mm Gorilla Girdle steps in. Designed specifically for the LB7, LLY, LBZ, and LMM engines, this custom-fit girdle is built from ½-inch thick steel, making it the strongest option available for your Duramax block. It locks everything down using oversized 14mm ARP main studs, significantly reducing the risk of main cap movement or distortion under high horsepower and heavy torque loads. Whether you're building a race-ready drag truck, a competition sled puller, or just want maximum durability for your street-driven monster, this girdle adds the reinforcement your rotating assembly needs.

Proven Strength for High-Performance Duramax Builds

Unlike thinner alternatives that flex under stress, the Gorilla Girdle provides rigid support that helps maintain main bearing alignment and block integrity—especially important when you're running boost and RPM levels far beyond factory specs. It bolts in cleanly with precise fitment, eliminating the guesswork often associated with custom engine reinforcement. Just note there’s a core charge for the upper oil pan, which the girdle interfaces with, but it’s a small price for a major step toward long-term reliability. If you’re not cutting corners with your build, don’t skimp on the foundation—this is the kind of part that lets your engine hold together when others split under pressure.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 GM 2500HD/3500HD 6.6L Duramax