Product Description
The CUMMINS 4376347 OEM ENGINE PISTON KIT is a genuine factory-standard replacement piston assembly designed for 2007.5-2018 ISB 6.7L Cummins diesel engines. Engineered to Cummins OEM specifications, this standard-bore piston kit restores proper compression, combustion efficiency, oil control, and long-term engine reliability.
This complete piston kit includes the piston, piston rings, wrist pin, and retainers, making it ideal for engine rebuilds, cylinder repair, preventative maintenance, and correcting damaged or worn pistons in high-mileage 6.7L Cummins applications.
Cummins genuine piston kits are manufactured to strict factory tolerances for proper skirt clearance, ring seal, compression height, and durability under towing, commercial, and performance diesel operating conditions.
FEATURES
- Genuine Cummins OEM piston kit
- Fits 2007.5-2018 ISB 6.7L Cummins engines
- Standard bore (STD) piston size
- Includes piston, rings, wrist pin, and retainers
- Restores factory compression and oil control
- OEM-quality skirt coating and ring design
- Ideal for engine rebuilds and cylinder repair
- Designed for towing, commercial, and heavy-duty applications
FITMENT
- 2007.5-2018 Dodge Ram 2500 6.7L Cummins
- 2007.5-2018 Dodge Ram 3500 6.7L Cummins
- 2008-2018 Ram 4500/5500 6.7L Cummins
- Industrial and commercial ISB/QSB 6.7L applications
Fitment Note: This is a standard-size piston kit intended for engines with standard cylinder bore dimensions. Always verify bore size and engine serial number before ordering.
WHAT'S INCLUDED
- OEM Cummins piston
- Piston ring set
- Wrist pin
- Retaining clips / retainers
CROSS-REFERENCE & RELATED PRODUCTS
- CUMMINS 5257364 OEM CONNECTING ROD
- CUMMINS 5257967 MAIN BEARING SET
- CUMMINS 4955354 UPPER ENGINE GASKET SET
- CUMMINS 4955355 LOWER ENGINE GASKET SET
- GENUINE CUMMINS OEM ENGINE PARTS
WHY USE GENUINE CUMMINS PISTON KITS?
Factory-engineered Cummins pistons are designed specifically for the combustion temperatures, cylinder pressures, and durability demands of the 6.7L ISB platform. Genuine OEM piston kits help ensure proper compression ratio, oil consumption control, and long-term reliability compared to lower-quality aftermarket alternatives.
SPECIFICATIONS
| Specification | Details |
|---|---|
| Manufacturer | Cummins |
| Part Number | 4376347 |
| Engine Compatibility | ISB 6.7L Cummins |
| Fitment Years | 2007.5-2018 |
| Bore Size | Standard (STD) |
| Kit Contents | Piston, rings, wrist pin, retainers |
| UPC / GTIN-12 | 190910284892 |
| Application | OEM engine rebuild and repair |
| Condition | New Genuine Cummins OEM Part |
| Prop 65 | Warning: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. |
FAQ
Does Cummins 4376347 include piston rings and wrist pin?
Yes. The 4376347 piston kit includes the piston, piston rings, wrist pin, and retainers for complete piston installation.
Is this piston standard bore or oversized?
This is a standard bore (STD) piston kit designed for engines with factory cylinder bore dimensions.
Will this fit all 6.7L Cummins engines?
Cummins 4376347 fits most 2007.5-2018 ISB 6.7L applications. Always verify fitment using your engine serial number (ESN) before ordering.
Should all pistons be replaced during a rebuild?
Yes. Replacing all pistons as a matched set helps maintain engine balance, compression consistency, and long-term durability during a complete rebuild.
