MAHLE S42097.020 PISTON RING SET (.020) FOR 2008–2010 FORD 6.4L POWERSTROKE

Product Description

Seal compression, control oil, and speed break-in with the MAHLE S42097.020 piston ring set for the 2008–2010 Ford 6.4L Power Stroke (VIN R). This +.020" (+0.50 mm) single-cylinder service pack uses OE-grade materials and profiles engineered for rapid seating after a proper plateau hone—perfect for targeted service or repairs on one hole.

Mahle S42097.020 .020 over piston rings, Ford 6.4 Power Stroke ring set, VIN R 6.4L diesel rings, CPP Diesel Mahle 6.4L rebuild parts, plasma moly top ring, chrome oil ring, single cylinder service pack, Powerstroke 2008 2009 2010 .020 oversize rings, MaxxForce 7 reference

Fitment

• 2008–2010 Ford F-250 / F-350 / F-450 / F-550 Super Duty — 6.4L Power Stroke V8 (VIN R)
• Also referenced for select Navistar MaxxForce 7 applications (verify bore and ring spec)
• Oversize: +.020" (+0.50 mm). Machining and file-fit to spec required.
• Sold as: single-cylinder ring set (order 8 for a complete engine)

Cross-Reference / Alternatives (Mahle on CPP Diesel only)

• MAHLE S42097 (STD) — single-cylinder set
• MAHLE 42097 (STD) — complete engine set
• MAHLE 42097.01 (+.010) — engine set
• MAHLE 42097.02 (+.020) — engine set

Helpful Notes

Measure and verify final bore size, taper, and out-of-round. Always confirm and set ring end gaps to MAHLE spec for your build and use a plateau hone finish for fastest seat-in.

FAQ

Is S42097.020 correct for my 6.4L?

Yes—if your 6.4L Power Stroke cylinders are bored and honed to +.020" and you need a single-cylinder ring pack. For a full engine set at .020", see MAHLE 42097.02.

How many do I need for a full rebuild?

This is a single-cylinder set. Order quantity 8 for all cylinders or choose the complete engine set (42097.xx).

What’s the typical finished bore for +.020"?

Approx. 3.886" for 6.4L applications, but always follow your machinist’s final sizing and MAHLE’s end-gap guidance.

Specifications for Mahle S42097.020