Product Description
Stronger, cooler, more durable. INDUSTRIAL INJECTION’s Performance Pistons for the 1998.5–2002 5.9L Cummins 24-valve add heat and scuff resistance with a thermal-barrier crown and ceramic skirt coating, plus chamfered tops to help reduce cylinder wall scuffing under load. Complete .040" over set with rings, wrist pins, and clips for a clean rebuild foundation.
Fitment
- 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins 24V (ISB VP44)
- .040" overbore required; professional machine work recommended
What’s Included
- (6) Performance pistons — .040" oversize
- Piston rings, wrist pins, and clips (complete set)
Key Features
- Thermal-barrier crown to keep heat in the chamber and manage piston crown temps
- Ceramic skirt coating to reduce friction and scuffing at high load
- Chamfered tops to help minimize cylinder wall contact under expansion
- Drop-in design with included rings/pins/clips after machining to .040"
Recommended Parts (CPP Internal Links)
- ARP 247-4202 Head Stud Kit (98.5–02/5.9 & 6.7)
- MAHLE HS54174-1 Head Gasket/Upper Set (98.5–02 24V)
- MAHLE S42170.040 Piston Ring Set (.040) — order qty 6
- VP44 Injection Pumps & Accessories (98.5–02)
- Hamilton Cams — matched cam/spring combos for ISB 5.9
Cross-Reference / Alternatives
- INDUSTRIAL INJECTION PDM-3354FCC.040 — Race Pistons (.040, fly-cut)
- INDUSTRIAL INJECTION PDM-3354.040 — Stock Pistons (.040)
- This listing (.040) — Performance Coated/Chamfered
- PDM-3354CC.020 — Performance Pistons (.020)
- Shop All Competition Pistons
Helpful Notes
- Measure and set piston-to-wall clearance and ring end gaps to your builder’s spec. Hone finish matters for ring seal.
- Verify valve-to-piston clearance when changing cam, head gasket thickness, or piston protrusion.
FAQ
Do these include rings and pins?Yes—this performance kit includes rings, wrist pins, and clips for all six cylinders.
Why choose Performance over Stock pistons?The Performance (CC) kit adds a thermal-barrier crown, ceramic skirt coating, and chamfered tops for improved durability under heat and load compared to stock pistons.
Is machining required?Yes, these are .040" over pistons; your block must be bored/honed accordingly. Always verify clearances.
Running a bigger cam or more boost?Consider the Race (FCC) pistons with .100" fly-cut valve reliefs for additional piston-to-valve clearance, and pair with ARP studs and the correct MAHLE head set.
