Product Description
Max out your LML bottom end. The Industrial Injection PDM-06037 14mm Gorilla Girdle ties the main caps together with a massive 1/2" plate to control cap walk and crank flex when cylinder pressures skyrocket. Designed specifically for 2011–2016 6.6L LML Duramax (Silverado/Sierra 2500HD & 3500HD), this kit is built for serious street/strip and towing builds.
Why it works
- 1/2-inch thick girdle plate increases block rigidity for high-boost/high-RPM durability.
- Uses XXL ARP 14mm main studs for higher clamping force and stable bearing crush.
- Complete kit with upper oil pan core exchange (core charge applies) to simplify install.
Fitment
- 2011–2016 Chevrolet Silverado 2500HD/3500HD — 6.6L LML Duramax
- 2011–2016 GMC Sierra 2500HD/3500HD — 6.6L LML Duramax
Shop more 2011–2016 LML Duramax parts and Industrial Injection upgrades at CPP Diesel.
Installation Notes
- Machine work recommended: align-hone/line-bore after stud & girdle install for proper main bore geometry.
- Oil pan/core: upper pan core charge applies; return your core for credit.
- Torque & sequence: follow ARP and Industrial Injection specs; verify main bearing clearances.
Recommended Companion Parts (CPP Diesel)
- Gorilla Girdle for 2001–2010 Duramax (if you’re building LB7/LLY/LBZ/LMM)
- ARP Main Studs & Fasteners (XXL 14mm for LML)
- Performance Main & Rod Bearings
- Upgraded Oil Pump & Oil System Components
- Built Short Blocks/Rotating Assemblies for big-power LML builds
FAQ
Q: Do I need machine work after installing the girdle?
A: Yes—plan on an align-hone/line-bore with the studs and girdle torqued to spec to ensure bearing alignment.
Q: Will this fit LB7/LLY/LBZ/LMM engines?
A: No. This 14mm girdle is designed for the LML architecture. For earlier engines, see our LB7/LLY/LBZ/LMM solutions.
Q: What power level is this for?
A: Ideal for high-boost street/strip and towing builds where you want maximum bottom-end stability.
Specifications
| Manufacturer | Industrial Injection |
|---|---|
| Part Number | PDM-06037 |
| Engine | 6.6L LML Duramax (2011–2016) |
| Stud Size | 14mm (XXL) |
| Girdle Thickness | 0.500 in (1/2") |
| UPC | 840256913583 |
| GTIN (GTIN-14) | 00840256913583 |
| Core Charge (Upper Oil Pan) | Yes (refundable upon acceptable core return) |
| Prop 65 | ⚠ WARNING: Cancer and Reproductive Harm. |
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