Product Description
Dial in proper cylinder sealing on your 6.7 with the MAHLE S42140.020 Piston Ring Set (+0.020") for 2007.5–2018 Cummins ISB. This OE-quality single-cylinder ring pack features a plasma-moly top ring and precisely engineered profiles to control blow-by, stabilize compression, and manage oil for long service life. Sold per cylinder—order quantity 6 for a complete engine refresh.
Fitment
- 2007.5–2018 Ram 2500 / 3500 with 6.7L Cummins ISB (24-valve)
Cross-Reference / Alternatives (Mahle only)
- Mahle S42140 (Standard size): S42140 (STD)
- Mahle S42140.040 (+0.040"): S42140.040
- Mahle 224-3732WR Piston Set w/ Rings (STD Bore): 224-3732WR (STD)
- Mahle 224-3732WR.020 Piston Set w/ Rings (.020"): 224-3732WR.020
What’s Included
- Complete single-cylinder ring pack: compression, secondary/scraper, and oil control rings
- OE-style materials and profiles for stock rebuilds
Install Notes
- Verify bore size and oversize before ordering (+0.020")
- Measure and set ring end gap per your engine builder’s spec/use case
FAQ
Is this a full engine set?
No. This is a single-cylinder set—order 6 to service a complete engine.
Will this fit my truck?
Yes—fits 2007.5–2018 Ram 2500/3500 with the 6.7L Cummins ISB. Always confirm oversize.
What’s special about the top ring?
It uses a plasma-moly face for durability and stable sealing under heat and load.
Do I need to gap the rings?
Yes—check and set end gaps to spec for your application (stock/tow/performance).
Specifications for Mahle S42140.020
| Attribute | Value |
|---|---|
| Brand | Mahle |
| Part Number | S42140.020 |
| UPC | 027067854674 |
| GTIN | 027067854674 |
| Oversize | +0.020" (≈0.50 mm) |
| Bore | 107.50 mm (4.233") |
| Axial Heights (approx.) | Top 2.87 mm / Second 2.50 mm / Oil 3.45 mm |
| Package Dimensions (WxHxD) | 4.75" × 1.13" × 4.75" |
| Shipping | Calculated at Checkout |
| Prop 65 | Not specified by manufacturer. See www.P65Warnings.ca.gov. |
