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MAHLE 3150005-065 Plasma-Moly Performance Piston Ring Set Bore File Fit - 4.065

Manufacturer

Picture for manufacturer MAHLE

Part Number

3150005-065
14 reviews
Sale Price

$126.81

Estimated ship date Saturday, November 21

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Fitment guaranteed

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Product Details

The MAHLE 3150005-065 is a precision-ground, plasma-moly performance piston ring set designed for 8-cylinder engines with a 4.065-inch bore (+.065" oversize). With ring widths of 1/16", 1/16", and 3/16", this file-fit, low-tension set is engineered from carbon steel and built to handle the demands of street, racing, and marine applications.

Key Features:

  • Plasma-moly inlaid barrel-faced top ring — delivers instant break-in and maintains consistent contact with the cylinder wall as the piston rocks at TDC and BDC
  • Napier THG (Tapered Hook Groove) second compression ring — provides superior oil control by scraping the cylinder walls and creating an oil reservoir on each downstroke
  • CP-20 oil control ring — engineered with a 20-degree ear angle for maximum cylinder wall sealing and enhanced oil drainback
  • File fit design — allows engine builders to precisely set ring end gap for specific applications
  • Low tension — minimizes friction to help liberate horsepower throughout the RPM range
  • Carbon steel construction — delivers strength and durability under high-stress racing conditions
  • Suitable for street, racing, and marine engine builds

MAHLE's performance piston ring sets are developed using advanced piston ring simulation and computer modeling tools, resulting in a product that reduces friction and improves sealing across all operating conditions. Each set includes eight rings engineered to meet the rigorous demands of high-RPM, high-compression, and high-temperature engine environments.

Products specifications

Bore (in)

4.060 in.

Bore (mm)

103.124mm

File Fit

Yes

Gapless

No

Notes

Napier (taper hooked groove) design second ring.

Oil Ring Included

Yes

Oil Ring Material

Stainless steel

Oil Ring Tension

Low

Oil Ring Thickness

3/16 in.

Quantity

Sold as a set.

Second Ring Facing Material

Cast iron

Second Ring Included

Yes

Second Ring Material

Cast iron

Second Ring Thickness

1/16 in.

Top Ring Facing Material

Plasma-moly

Top Ring Included

Yes

Top Ring Material

Ductile iron

Top Ring Thickness

1/16 in.

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