Product Description
MAHLE 224-3732WR.040 piston with rings is an OE-quality, .040" overbore replacement for 2007.5–2018 Ram trucks with the 6.7L Cummins. Expansion-controlled design with compensated ring grooves maintains proper ring loading, oil control, and durability under heavy use.
PRICE SHOWN ON THIS CPP PRODUCT IS FOR A COMPLETE SET OF SIX (6) PISTONS WITH RINGS — one for each cylinder.
- Application: 6.7L Cummins ISB (24-valve common-rail), 2007.5–2018
- Size: .040" oversize (1.00 mm)
- Includes: New rings pre-matched to each piston; wrist pin & clips (as supplied by Mahle)
- Skirt: Non-coated
- Compression: Standard
Fitment
- 2007.5–2018 Ram 2500 / 3500 / 4500 / 5500 with 6.7L Cummins ISB (24V, common-rail)
Cross Reference / IDs
- Mahle: 224-3732WR.040 (oversize); family 224-3732WR (standard & other oversizes)
- GTIN/UPC: 639789311375
- Related OE kit (standard bore, for reference/ID only): Cummins 4376347 — verify by VIN/ESN and bore size
What’s Included
Set of six (6) Mahle pistons with matched ring packs, wrist pins, and retaining clips.
Install Notes
Professional measurement and machining required for .040" overbore. Verify wall finish and piston-to-wall clearance to Mahle specs. Always balance sets and check protrusion.
FAQ
Is this price for one piston or a full engine set?
This CPP listing is priced for a complete set of six (6). Many sites (including XDP) list per-piston pricing—be sure to compare accordingly.
Will these fit my 2007.5–2018 Ram 6.7L?
Yes, if your block is bored .040" over. Always confirm with your machine shop and engine serial number (ESN).
Are rings included and pre-sized?
Yes. Mahle supplies matched ring sets with each piston.
Do I need coated skirts?
These are non-coated OE-style pistons. Many stock and work-truck builds run them successfully; for severe duty or high heat, consider thermal / skirt coatings.
