Product Description
Stronger stock-style rebuild with Marine big-bowl geometry. This .040" over piston set from Industrial Injection is built for the 1989–1998 5.9L Cummins 12-valve (VE & P-pump). Includes pistons with matched rings, wrist pins, and clips for a clean, OE-style refresh with the airflow benefits of the Marine bowl.
Fitment
- 1989–1993 Dodge Ram 2500/3500 — 5.9L Cummins 12-Valve (VE pump)
- 1994–1998 Dodge Ram 2500/3500 — 5.9L Cummins 12-Valve (P7100)
What’s Included
- (6) Industrial Injection Marine Big-Bowl pistons — .040" oversize
- Matched piston rings, wrist pins, and clips
Key Features
- Marine big-bowl crown for improved airflow characteristics
- OE-style construction for reliable daily/tow use
- Designed for machine-shop overbore to 0.040"
Recommended Parts (CPP Internal Links)
- ARP 247-4203 Head Stud Kit — 1989–1998 5.9L 12V
- MAHLE HS4068 Upper Head Gasket Set — 1989–1998 5.9L 12V (or Cummins 4089649 OE Upper Set)
- Shop 12V Pistons & Rings (All)
- 89–93 Engine Parts & Accessories
- 94–98 Engine Parts & Accessories
Cross-Reference / Alternatives
- PDM-03523.020 — Marine Big-Bowl (.020 Over)
- PDM-03523 — Marine Big-Bowl (Standard Bore)
- PDM-03523CC.040 — Performance | PDM-03523FCC.040 — Race
Helpful Notes
- Professional machine work required; verify piston-to-wall clearance and ring end gaps.
- Confirm bowl style vs. your injectors/combustion goals before ordering.
FAQ
Do these come with rings and pins?Yes — the set includes matched rings, wrist pins, and clips for each piston.
Will Marine big-bowl pistons change compression?Marine bowl geometry differs from small-bowl pistons and may affect effective compression & mixing. Match to your injector/nozzle plan and intended use.
Is a .040" overbore safe for a street/tow build?Yes, when performed by a qualified machine shop and assembled to spec. Always measure and set clearances to the piston manufacturer’s guidelines.
What else should I replace during a piston job?We recommend new head gaskets/seals and upgraded head studs for improved clamping, plus a thorough inspection of bearings, oil squirters, and cooling nozzles.
