Product Description
Stronger, cooler, and built for boost. INDUSTRIAL INJECTION’s PDM-360.040 Performance Cast Pistons are precision machined .040” oversize, de-lipped, and coated on the crowns and skirts for durability under high heat and cylinder pressure. Complete set for a clean, pro-level Duramax rebuild.
Fitment
- 2001–2004 LB7 6.6L Duramax
- 2004.5–2005 LLY 6.6L Duramax
- 2006–2007.5 LBZ 6.6L Duramax
- 2007.5–2010 LMM 6.6L Duramax
- 2011–2016 LML 6.6L Duramax
What’s Included
- (8) Performance cast pistons — .040” oversize
- Rings, wrist pins, and clips
Key Features
- Performance cast construction for reliable strength
- De-lipped bowl for improved durability in high-load use
- Coated crowns & skirts to manage heat and reduce scuffing
- Precision machined for consistent clearances
- Direct replacement set; machine block to .040” over
Recommended Parts (CPP Internal Links)
- ARP 230-4201 Head Stud Kit — 2001–2016 Duramax
- MAHLE HS54580C Upper Head Set — 2011–2016 LML (see individual 2001–2016 head gaskets by thickness/side here)
- Shop All Duramax Pistons & Rings
- Alternate Size: PDM-360STD (Standard Bore)
- Alternate Size: PDM-360.020 (.020 Over)
- Race Option: PDM-362.040 Forged Pistons
- S&S LML CP3 Conversion Kit w/ Pump — 50-State (2011–2016)
Helpful Notes
- Professional machine work required (.040” overbore). Verify piston-to-wall clearance and ring end gaps.
- “No valve relief” design—confirm piston-to-valve clearance with your cam, gasket thickness, and deck height.
FAQ
Do these pistons include rings?Yes. The set includes pistons, rings, wrist pins, and clips to simplify assembly.
Are these forged?No. PDM-360 series are performance cast pistons with coated crowns and skirts. For forged, see the PDM-362 race pistons listed above.
Is valve relief available?This .040” performance cast set is typically supplied without valve reliefs (de-lipped bowl). If you need reliefs for a high-lift cam, consider a race piston option.
What supporting mods are recommended?Head studs and correct head gasket thickness are strongly recommended. For 2011–2016 LML trucks running higher fueling, a CP3 conversion is a proven reliability upgrade.
