What is the plasma moly coating for?

The plasma moly coating on the top ring is a hard, wear-resistant surface. It helps the ring slide smoothly against the cylinder wall, reducing friction and improving its lifespan under operating temperatures.

What does 'standard tension' mean for these rings?

Standard tension refers to the spring force the piston ring exerts against the cylinder wall. This setting is designed to create a good seal for typical engine operating conditions and is a common choice for many rebuilds.

Are these rings suitable for all engine types?

This specific set is designed for a 4.030-inch bore and uses a standard tension configuration. While Mahle makes many ring sets, you should always verify that this particular part number matches the specifications for your engine build.

Mahle OE Piston Rings Set 3150120.035

Name: Mahle Rings 4.030in Bore .043in1/16in3/16in Plasma Moly Ductile Std Tension Engine Set Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-4-030in-bore-043in1-16in3-16in-plasma-moly-ductile-std-tens-t14-51913
Price: 191.56 USD
Availability: BackOrder

Mahle Rings 4.030in Bore .043in1/16in3/16in Plasma Moly Ductile Std Tension Engine Set Moly Ring Set

$191.56

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle OE Piston Ring Set 3150120.035. Plasma moly ductile iron rings for 4.030in bore. Standard tension.

Key Features

Plasma moly coating on the top ring for improved durability.
Ductile iron construction offers good strength and flexibility.
Designed for a standard 4.030-inch cylinder bore.
Includes a .043-inch top ring, 1/16-inch second ring, and 3/16-inch oil ring.
Standard tension design for a reliable seal.
Meets OE specifications for consistent performance.

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Product Details

These Mahle OE piston rings feature a plasma moly coating on the top ring, a tough material choice that helps them hold up to the heat and friction inside the cylinder. They're made from ductile iron, which offers good strength and flexibility, and they're designed for a standard 4.030-inch bore size with a standard tension setup.

The ring set includes a .043-inch top ring, a 1/16-inch second ring, and a 3/16-inch oil ring. This specific sizing and material combination is common in many engine rebuilds, aiming for a solid seal between the piston and cylinder wall to maintain compression and keep oil out of the combustion chamber. Mahle is a well-known name in engine components, and these rings are built to meet OE specifications for reliable performance.

When you're rebuilding an engine, getting the piston rings right is crucial for proper operation. These Mahle rings are a well-built option for your project, designed to fit right and perform as expected. Keep in mind that these rings are not CARB approved and cannot be shipped to California.