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MAHLE 40664CP Plasma-Moly Engine Piston Ring Set 4.040 in. Bore 6-Cylinder

(Ford F-150 1975-96, F-250 1965-96, Bronco 1966-67, 1980-92, F-350 1965-96, Galaxie 500 1965-72, F-100 1965-83, F-250 Pickup 1965-74 + 62 more models)

Part of: MAHLE Plasma-Moly Engine Piston Ring Set Bore

Other options in this family: MAHLE 42082CP.020 MAHLE 41699.020 MAHLE 41870CP.060 MAHLE 41421CP.030 MAHLE 41879CP.040

Manufacturer

Picture for manufacturer MAHLE

Part Number

40664CP
13 reviews
Sale Price

$46.80

2 left at this price

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Usually delivered within 2 days

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Product Details

The MAHLE 40664CP is a premium plasma-moly engine piston ring set engineered for 6-cylinder applications with a 4.040-inch bore diameter. Ring widths are 5/64 in. / 5/64 in. / 3/16 in. (top compression / second / oil).

Key Features:

  • Plasma-moly coating on compression rings for exceptional wear resistance and reduced friction
  • SAE 9254 high alloy steel base material for higher tensile and yield strength, extended fatigue resistance, and increased material hardness
  • Pre-lapped design seats immediately upon installation, virtually eliminating break-in time
  • Barrel-faced top compression rings with CNC-controlled gap chamfer for optimized compression and reduced blow-by
  • Reverse twist intermediate (second) rings with taper race machining for superior groove side sealing and enhanced cylinder wall contact
  • CP-20 oil ring assemblies with exclusive 20-degree ear angle for maximum side seal in the oil ring groove, plus a chemically polished expander for enhanced oil drainback
  • Ring materials, coatings, and tension optimized for reduced friction and extended engine life

MAHLE is one of the world's largest OE piston ring manufacturers, and the 40664CP set reflects that expertise — bringing OE form, fit, and function to the aftermarket. Whether rebuilding a worn engine or freshening up for performance use, this ring set is a trusted choice for professional engine builders.

Products specifications

Fits

Ford F-150 1975-96, F-250 1965-96, Bronco 1966-67, 1980-92, F-350 1965-96, Galaxie 500 1965-72, F-100 1965-83, F-250 Pickup 1965-74, F-350 Pickup 1965-74, E-350 Econoline 1975-96, Galaxie 1965-67, E-150 Econoline 1975-96, LTD 1965-72 + 57 more models

Piston Ring Material

Plasma-Moly Carbon Steel

Piston Ring Size

Standard

Piston Ring Type

Premium

Bore Diameter (in)

4.000

Great!

Good

Very nice.

so far so good!

Great price for the item, almost half off. Good website for auto parts

so far so good

So far so good. Tool was priced nicely

So far so good

Product came fast and shipped well. Price was far better than I could find elsewhere. What else could you ask for?

Great

Ordered Monday - didnt ship until Thursday.<br><br>Email sent tracking number, but didnt mention which source was used for transport.<br><br>Product as described.

Great price & part in stock & was told would ship today !

great site

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