Product Description
MAHLE S42097.020 is an OE-quality +0.020" oversize piston ring set engineered for the 2008–2010 Ford 6.4L Power Stroke. Each package services one cylinder; order quantity 8 for a complete engine. GTIN: 027067850850.
- Application: 6.4L Power Stroke (Ford/Navistar) V8 diesel
- Oversize: +0.020" (approx. 0.50 mm)
- Construction: OE-grade materials, plasma-moly top ring (per MAHLE line spec)
- Set contents: Top compression ring, second ring, oil ring assembly (for 1 piston)
Fitment
- 2008, 2009, 2010 Ford F-250/F-350/F-450/F-550 Super Duty with 6.4L Power Stroke
Cross Reference / Alternatives
- MAHLE Standard: S42097 (standard bore)
- MAHLE Oversizes: S42097.010 (+0.010"), S42097.020 (+0.020"), S42097.030 (+0.030")
- Bore reference: ~3.886" for +0.020" oversize (application guides for 6.4L).
- GTIN/UPC: 027067850850
What’s Included
- Ring set for one cylinder (top, second, oil ring assembly)
- Order 8 sets for a full engine
FAQ
Is this the correct ring set for my 6.4L Power Stroke?Yes—S42097.020 fits 2008–2010 Ford Super Duty trucks with the 6.4L Power Stroke when the cylinders are bored +0.020".
How many sets do I need for a complete rebuild?
Each box services one piston. You’ll need 8 sets for a full engine.
What is the bore size with +0.020" rings?
The +0.020" oversize corresponds to an approximate 3.886" bore for 6.4L Power Stroke applications. Always verify with your machine shop’s final bore/hone size and ring end-gap specs.
Do these include pistons?
No—this is a ring set only. Pistons are sold separately.
