Product Description
Lock your LLY/LBZ/LMM injectors down the right way. These INDUSTRIAL INJECTION billet hold downs include a heavy-duty ARP® bolt kit and a center aligning washer to ensure repeatable, square clamping and long service life under high rail pressure.
Fitment
- 2004.5–2005 LLY 6.6L Duramax
- 2006–2007 LBZ 6.6L Duramax
- 2007.5–2010 LMM 6.6L Duramax
What’s Included
- Billet steel injector hold downs (Industrial Injection PDM-08382)
- Heavy-duty ARP install bolts
- Center aligning washer for precise placement
Key Features
- Heat-treated high-alloy billet steel construction
- ARP® hardware for superior clamp load and durability
- Designed to maintain injector seal integrity under elevated rail pressure
Install Notes
- Torque ARP bolts to 28 ft-lb using ARP lube (follow sequence best practices)
- Inspect injector cups, seals, and hold-down pads; replace worn items during service
Recommended Parts (CPP Internal Links)
- GM Duramax Injectors & Nozzles — browse LLY/LBZ/LMM sets
- GM Duramax Studs & Bolts — complementary fasteners
- Shop ARP Hardware at CPP — lube and fastener kits
- Shop Industrial Injection at CPP — related fuel components
Cross-Reference / Alternatives
FAQ
Why billet hold downs over stock?Billet, heat-treated steel paired with ARP bolts provides higher clamp stability, helping prevent injector movement and sealing issues under performance use.
Do these fit LB7 (2001–2004)?No. Use the LB7-specific kit PDM-08377.
What torque should I use?Torque ARP bolts to 28 ft-lb with ARP lube (follow a consistent sequence). Re-check after heat cycles on fresh builds.
What should I replace during the job?Consider new injector seals/O-rings and inspect injector cups (LB7), rail fittings, and return line seals to prevent future leaks.
