Product Description
MAHLE 224-3802 is a standard-bore (107 mm / 4.210") marine/QSB-bowl piston kit for the 2007.5–2018 Cummins 6.7L ISB. Sold as a matched set of six pistons with pins/clips (as supplied by MAHLE). For a complete build, add six (6) MAHLE S42140 (STD) ring sets.
Why builders choose the marine bowl: focused combustion and stable ring loading under heat and towing, great for 6.7 builds that leverage 5.9-style injector sprays with proper tuning.
Fitment
- 2007.5–2018 Ram 2500/3500/4500/5500 with 6.7L Cummins ISB (24-valve)
- Bore: Standard (107 mm / 4.210")
- Quantity: Set of 6 pistons with pins & clips (rings sold separately)
Cross-Reference / Alternatives (MAHLE on CPP Diesel only)
- Oversize (+.020): MAHLE 224-3802.020
- Ring set (STD): MAHLE S42140 (STD)
- Ring set (+.020): MAHLE S42140.020
- Ring set (+.040): MAHLE S42140.040
- Standard-bowl pistons w/ rings (STD): MAHLE 224-3732WR (STD)
- Standard-bowl w/ rings (+.040): MAHLE 224-3732WR.040
Specifications for Mahle 224-3802
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 224-3802 (STD) |
| Bore Size | 107 mm (4.210") |
| Combustion Bowl | Marine / QSB style |
| Includes | (6) pistons with pins & clips (as supplied by MAHLE) |
| Compatible Rings | Use six (6) MAHLE S42140 (STD) ring sets |
| UPC | 027067899415 |
| GTIN | 00027067899415 |
| Shipping | Free Shipping (see cart for options) |
| Prop 65 | This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more. |
FAQ
Does this kit include piston rings?
No. Rings are sold separately. Order six (6) MAHLE S42140 (STD) ring sets.
Will the marine/QSB bowl work with my injector spray pattern?
It’s commonly paired with 5.9-style spray patterns on 6.7 builds with appropriate tuning. Always verify spray angle and piston bowl match before assembly.
Is any machine work required?
These are standard-bore pistons. Measure wear/out-of-round and hone/bore to MAHLE/Cummins spec as needed.
