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MAHLE S42246 Engine Piston Ring Set - Navistar MaxxForce 7 Standard Bore

Manufacturer

Picture for manufacturer MAHLE

Part Number

S42246
18 reviews
Sale Price

$35.16

Estimated ship date Saturday, November 21

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The MAHLE S42246 is a complete engine piston ring set engineered to OE specifications for the Navistar MaxxForce 7 diesel engine. MAHLE is one of the world's largest OE piston ring manufacturers, and this set reflects the same design standards used in original equipment production — delivering precise fit, reliable sealing, and long-term durability.

Key Features:

  • OE Form, Fit & Function: Designed as a direct OE replacement with exact dimensional tolerances for a proper seal and consistent performance
  • SAE 9254 High Alloy Steel Construction: Top and second compression rings utilize SAE 9254 high alloy steel base material, providing higher tensile and yield strength, extended fatigue resistance, and increased material hardness
  • Napier Second Rings: MAHLE's SAE 9254 steel napier second rings deliver superior oil control, improved combustion gas management, top ring stability, and optimal sealing with minimal power loss
  • CP-20 Oil Ring Design: The exclusive CP-20 oil ring features a 20-degree ear angle for maximum side seal contact in the piston oil ring groove, enhancing oil control and simplifying installation
  • Friction-Reducing Engineering: Engineered to reduce friction and ring mass while minimizing engine oil consumption and extending service life
  • Pre-Lapped Rings: Each ring is pre-lapped from the factory to streamline installation and promote long-term longevity
  • Standard Bore: This S42246 listing covers the standard bore specification; oversized variants (e.g., .020, .030) are available under related part numbers

MAHLE piston rings meet the demands of heavy-duty diesel engine operation, making the S42246 an ideal choice for engine rebuilds and overhauls requiring precise, dependable ring performance.

Alright

Simple, convenient also priced well. Bonus was no shipping fee.

love the price wow!!!! thank you guys for being around I just saved over 50 bucks!)

Very satisfied with purchase, purchase was delivered earlier than I expected. I will be shopping here again. Good prices and free shipping.

Ordering was super easy!!!

Fast, pleasant experience.

This muffler assy. fit my basic 1988 Toyota truck with 103 inch wheel base perfectly. Installed very easily and worked quite well. Installation note: after removal of the old assy. remove the two muffler rubber suspension hangers that are above and near the axle. Install them on the muffler hangers first, then install the assy. Will make the installation much easier.

i

Great price.

easy site to navigate

Good so far

Quick and easy

So far so good

good so far

will know more when the part arrives

Not bad price

Smooth and inexpensive!

All pieces ordered were shipped promptly and arrived in very great shape. I will be ordering from this site again.

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