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Mahle 42291CP Engine Piston Ring SetOE Quality 60-Day Returns
Part #: 42291CP

Mahle 42291CP Engine Piston Ring Set

⚙️ 4 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$214.73Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ram, 2500 and 3500
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
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Mahle 42291CP Engine Piston Ring Set
BrandMahle
Part Number42291CP
Bore Diameter (in)4.0906
Item GradePremium
Oil Ring Assembly MaterialGns
Oil Ring Assembly Thickness (Axial Height)0.0787 in
Piston Ring Face CoatingPlasma-moly
Piston Ring OversizeStandard
Second Ring MaterialCast iron
Second Ring Thickness (Axial Height)0.0469 in
SizeShallow groove
Top Ring MaterialCarbon steel
Top Ring Thickness (Axial Height)0.0587 in

This part fits 4 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2017Ram25006.4LV8N/ASize Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Ductile Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Gas Nitride; Axial Height UCR-1.5mm; LCR-1.2mm; OCR-2.0mm; Ring Type UCR:RF-13PF; LCR:THM-17; OCR: CP-20NG; Shallow Groove
2017Ram35006.4LV8N/ASize Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Ductile Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Gas Nitride; Axial Height UCR-1.5mm; LCR-1.2mm; OCR-2.0mm; Ring Type UCR:RF-13PF; LCR:THM-17; OCR: CP-20NG; Shallow Groove
2016Ram25006.4LV8N/ASize Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Ductile Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Gas Nitride; Axial Height UCR-1.5mm; LCR-1.2mm; OCR-2.0mm; Ring Type UCR:RF-13PF; LCR:THM-17; OCR: CP-20NG; Shallow Groove
2016Ram35006.4LV8N/ASize Standard; Material Grade Premium; Material UCR-Carbon Steel; LCR-Ductile Iron; OCR-Stainless Steel; Facing UCR-Plasma-Moly; OCR-Gas Nitride; Axial Height UCR-1.5mm; LCR-1.2mm; OCR-2.0mm; Ring Type UCR:RF-13PF; LCR:THM-17; OCR: CP-20NG; Shallow Groove

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

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