Product Description
Genuine Cummins
Cummins 4376347 — Engine Piston Kit (Standard Bore) for ISB 6.7L
MPN: 4376347 | Also Known As: standard piston kit, std bore piston | Intended Use: Stock rebuilds without overbore
Why This Part
- ✓ OE piston kit engineered for factory performance and durability.
- ✓ Direct-fit for 2007.5–2018 Ram 6.7L ISB (verify by VIN/ESN).
- ✓ Standard bore for blocks that measure within spec (no overbore).
- ✓ Helps restore compression, oil control, and ring seal after wear or damage.
OE Fit Std Bore Set Per Cylinder
Quick Specs
| Type | Engine piston kit (standard bore) |
|---|---|
| OE Part # | 4376347 |
| Typical Kit Contents | Piston, ring set, wrist pin, and clips (verify by VIN/ESN) |
| Qty Required | 6 kits per engine (one per cylinder) |
| Related Components | Ring set 4955366 (std), connecting rod 5257364 |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2007.5–2018 | Ram 6.7L ISB (24V Common-Rail) | Ram 2500/3500 |
Industrial/Off-Highway: Used primarily on Tier 4 Interim ISB/QSB 6.7 variants—always confirm by ESN.
Often Paired With
- Piston Ring Set (Std): Cummins 4955366 (one set per piston)
- Connecting Rod: Cummins 5257364 (check re-use specs)
- Gasket Sets: head set, lower set (as needed for rebuild)
- Bearings: main & rod bearings sized per measurement
What’s In The Box
- (1) Genuine Cummins Piston Kit — Standard Bore (4376347)
- Includes piston/rings/pin/clips on most applications (confirm by VIN/ESN).
Install Tips
- Measure cylinders for taper/out-of-round; hone to spec for ring seal.
- Set ring end gaps per Cummins service manual; observe piston orientation.
- Prime oil system, verify base oil pressure, and follow proper break-in.
FAQ
WILL THIS FIT MY 2007.5–2018 6.7L CUMMINS RAM?Yes—this standard-bore piston kit covers most 2007.5–2018 6.7L ISB Ram 2500/3500 applications (verify by VIN/ESN).
WHAT’S INCLUDED IN THE PISTON KIT?Typically piston, ring set, wrist pin, and clips. Contents can vary by ESN; confirm at checkout to ensure the correct combination for your engine.
HOW MANY KITS DO I NEED?Six—one kit per cylinder on the 6.7L ISB.
IS THIS STANDARD OR OVERSIZE?This listing is standard bore. If your block needs machining, choose the correct oversize piston/ring parts.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 4376347 for proper fit, materials, and longevity.
