What is the purpose of plasma moly top rings?

Plasma moly top rings are a popular choice because they offer improved wear resistance compared to standard cast iron rings. This means they can last longer and maintain a better seal under demanding conditions.

What do the different ring sizes mean (.043in, 1.5mm, 3.00mm)?

These measurements refer to the thickness of the individual rings. The top ring is .043 inches, the second ring is 1.5mm, and the oil ring is 3.00mm. These are common dimensions for many engine builds, ensuring proper fit and function within the piston groove.

Are these rings suitable for all engine builds?

These rings are designed for a 4.155-inch bore and feature standard tension with a reduced radial profile. While they are a solid OE-replacement option, they are not CARB approved and cannot be shipped to California. Always confirm compatibility with your specific engine's requirements.

Mahle OE Piston Ring Set 3150183.035

Name: Mahle Rings 4.155in Bore .043in1.5MM3.00MM Plasma Moly Ductile Std Tension Reduced Rad Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-4-155in-bore-043in1-5mm3-00mm-plasma-moly-ductile-std-tensi-t14-51495
Price: 192.69 USD
Availability: BackOrder

Mahle Rings 4.155in Bore .043in1.5MM3.00MM Plasma Moly Ductile Std Tension Reduced Rad Moly Ring Set

$192.69

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 for 4.155in bore engines. Features plasma moly top rings for improved durability.

Key Features

Fits engines with a 4.155-inch bore.
Plasma moly top rings offer improved wear resistance.
Standard tension design for reliable cylinder sealing.
Reduced radial profile for efficient operation.
Includes .043in top ring, 1.5mm second ring, and 3.00mm oil ring.
OE-grade replacement part from Mahle.

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Product Details

Mahle is known for making solid OE-replacement parts, and this piston ring set is no different. If you're rebuilding the top end of your engine and need rings that fit right and perform reliably, this set is a strong option. They're designed for a 4.155-inch bore and feature plasma moly top rings, which are a popular choice for their improved wear resistance compared to plain cast iron.

This set includes standard tension rings with a reduced radial profile, meaning they're built to handle the pressures inside the cylinder without being overly stiff. The top ring measures .043 inches, the second ring is 1.5mm, and the oil ring is 3.00mm, which are common sizes for many performance and heavy-duty applications. These rings are well-made and intended to restore proper compression and oil control to your engine.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for installation procedures and torque specifications.