Product Description
CUMMINS 4376347 OEM ENGINE PISTON KIT (STANDARD) – ISB 6.7L (2007.5–2018)
The genuine CUMMINS 4376347 OEM engine piston kit is the factory-standard replacement piston kit for ISB 6.7L engines used in 2007.5–2018 Ram 2500/3500 trucks and commercial variants. Designed by Cummins for reliability, strength, and optimal combustion efficiency, this standard-size piston kit restores proper compression, sealing, and durability during engine rebuilds or major overhauls.
This complete OEM piston kit includes the standard bore piston, rings, wrist pin, and retainers—engineered to Cummins specifications for metallurgy, weight, balance, and thermal expansion. Whether repairing a scored cylinder, correcting oil consumption, or performing a full ISB rebuild, choosing a real Cummins piston kit ensures longevity and factory-level performance.
Key Features
- Genuine Cummins OEM piston assembly – not aftermarket.
- Standard bore size for unmachined or minimally worn cylinders.
- Complete kit: piston, wrist pin, rings, retainers.
- Factory-correct compression height for proper quench and power.
- Engineered for high durability under towing, tuning, and high-load use.
Fitment Details
- Engine: Cummins ISB 6.7L
- Years: 2007.5–2018
- Vehicle Applications: Ram 2500 / 3500, Cab & Chassis trucks, ISB industrial power units
- Bore Size: Standard (STD)
- Notes: Always confirm piston size by VIN/ESN; some rebuilds require oversize pistons.
Cross-Reference & Companion Cummins Parts
CPP Diesel carries the full lineup of Cummins ISB 6.7L rebuild components. Common companion parts for CUMMINS 4376347 include:
- CUMMINS 5257148 INTAKE VALVE KIT – 6.7L
- CUMMINS 4955212 EXHAUST VALVE KIT – 6.7L
- CUMMINS 4981790 VALVE STEM SEAL – 5.9L / 6.7L
- CUMMINS 5257967 MAIN BEARING SET – 6.7L (STANDARD)
- VIEW ALL GENUINE CUMMINS OEM COMPONENTS
Common Cummins alternate or related numbers: 4956009, 4956010 (verify piston size by VIN/ESN).
Installation Notes
- Confirm cylinder bore condition before installing standard-size pistons.
- Professional honing recommended for proper ring seal.
- Measure piston-to-wall clearance to Cummins specifications.
- Always install rings in correct orientation and rotation.
- Balance assemblies when replacing multiple pistons.
Specifications for cummins 4376347
| Attribute | Value |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Cummins Part Number | 4376347 |
| Alternate Part Numbers | 4956009, 4956010 (verify size) |
| Function | Standard-size piston kit for ISB 6.7L engines |
| Engine Compatibility | Cummins ISB 6.7L (2007.5–2018) |
| Kit Contents | Piston, rings, wrist pin, retainers |
| Bore Size | Standard (STD) |
| UPC | 190910284892 |
| GTIN | 190910284892 |
| Shipping Weight | Approx. 3.8 lbs |
| Shipping Method | Standard ground; expedited available |
| E-Codes / Emissions | Engine internal (non-emissions component) |
| Prop 65 Warning | WARNING: May expose you to chemicals known to the State of California to cause cancer and reproductive harm. Visit www.P65Warnings.ca.gov. |
| Country of Origin | As labeled by Cummins (varies by production batch) |
Frequently Asked Questions
IS THIS THE CORRECT PISTON KIT FOR MY 6.7L CUMMINS?
Yes, CUMMINS 4376347 fits most ISB 6.7L engines from 2007.5–2018 using standard-bore pistons. Always verify piston size by VIN/ESN.
WHAT SIZE IS THIS PISTON?
This kit is standard bore (STD). Oversize pistons require block machining and different part numbers.
SHOULD I REPLACE ALL PISTONS AT THE SAME TIME?
Yes. For proper balance, compression, and reliability, Cummins recommends replacing pistons as a full set during rebuilds.
DOES THIS KIT INCLUDE RINGS AND A WRIST PIN?
Yes — the Cummins 4376347 kit includes the piston, rings, wrist pin, and retainers.
IS THIS A GENUINE CUMMINS PART?
Yes. CPP Diesel supplies authentic Cummins OEM piston kits that meet strict factory specifications.
