Product Description
MAHLE 42097 is the OE-quality complete standard-size piston ring set for the 2008–2010 Ford 6.4L Power Stroke. Rings are pre-lapped for fast seating and built to factory specifications for durability and oil control. GTIN: 027067850812.
- Application: 6.4L Power Stroke V8 (VIN R), 2008–2010
- Construction: UCR (top) plasma-moly, LCR ductile iron, OCR chrome oil control
- Ring heights: UCR 2.5 mm, LCR 2.0 mm, OCR 3.0 mm
- Nominal bore: 3.866" (98.21 mm); standard size
Fitment
- 2008, 2009, 2010 Ford F-250 / F-350 / F-450 / F-550 Super Duty with 6.4L Power Stroke diesel
- Note: Some suppliers list compatibility with Navistar MaxxForce 7; verify by VIN/engine code.
Cross Reference & Related MAHLE Numbers
- MAHLE S42097 (single-cylinder service pack)
- Oversizes: 42097.010, 42097.020, 42097.030
- GTIN/UPC: 027067850812
FAQ
Is this the correct ring set for my 6.4L?
Yes—this standard-bore set matches 2008–2010 6.4L Power Stroke specifications. Always verify bore size during teardown and measurement.
What are the ring materials and sizes?
Top ring: plasma-moly; second: ductile iron; oil control: chrome. Heights are 2.5 mm / 2.0 mm / 3.0 mm respectively (standard 3.866" bore).
Are the rings pre-lapped?
Yes—pre-lapped rings for quicker seating per MAHLE/XDP product details.
Does MAHLE offer oversizes?
Yes—common oversizes include .010", .020", and .030" (42097.010 / .020 / .030).
Install Notes
- Measure cylinder bores (out-of-round/taper) and hone to proper finish for moly rings.
- Confirm end gaps per MAHLE spec; install with correct side-mark orientation.
