Product Description
MAHLE 224-3732.020 piston kit for the 2007.5–2018 6.7L Cummins ISB is a .020" overbore OE-style solution for clean, durable rebuilds. Expansion-controlled alloy and compensated ring grooves help maintain sealing under heat and load in tow/work trucks and daily drivers.
Fitment
- Ram 2500/3500/4500/5500 with 6.7L Cummins ISB, model years 2007.5–2018 (24-valve, common-rail)
- Bore: .020" over (machine work required)
- Pin diameter: 40 mm (typical 6.7L ISB spec)
- Sold as a set of six pistons (rings sold separately; see Cross-Reference)
Cross-Reference / Alternatives (MAHLE on CPP Diesel)
- Matching ring set (.020): MAHLE S42140.020 Piston Ring Set
- Matching ring set (STD): MAHLE S42140 (STD) Piston Ring Set
- With rings, .020 over (complete set): MAHLE 224-3732WR.020 Piston Set w/ Rings
- With rings, standard bore: MAHLE 224-3732WR (STD) Piston Set w/ Rings
- With rings, .040 over: MAHLE 224-3732WR.040 Piston Set w/ Rings
Specifications for Mahle 224-3732.020
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 224-3732.020 (.020 over) |
| Engine | Cummins 6.7L ISB (2007.5–2018) |
| Bore Size | +0.020" over (machine work required) |
| Pin Diameter | 40 mm |
| Includes | (6) pistons; rings sold separately (pair with MAHLE S42140.020) |
| UPC | Not specified by manufacturer |
| GTIN | Not specified by manufacturer |
| Shipping | Calculated at checkout / ground service |
| 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
Is this priced per piston or for a complete engine set?
This listing is for a set of six (6) pistons. Rings are sold separately; see the Mahle ring sets linked above.
Will these fit my 2007.5–2018 Ram 6.7L?
Yes—if your block is bored .020" over and you’re running the standard 6.7L ISB configuration. Always verify bore size and pin spec with your machine shop.
Do I need different rings for .020 over?
Yes. Use MAHLE S42140.020 (.020) ring sets; for standard bore, use S42140. Both are linked above.
What if I want a kit that already includes rings?
Choose the MAHLE 224-3732WR.020 complete piston set with rings (linked in Cross-Reference).
