What is the purpose of plasma moly coating on piston rings?

The plasma moly coating on the top ring is a hard surface treatment. It's applied to reduce friction between the ring and the cylinder wall, which helps to minimize wear and extend the life of both components.

What does 'standard tension' mean for piston rings?

Standard tension rings are designed to provide a good seal against the cylinder wall for most stock or mildly modified engines. They offer a balance between sealing performance and minimizing drag on the piston, which is important for overall engine efficiency.

Are these rings suitable for all engine builds?

This set is designed for a specific bore size (4.040 inches) and features standard tension, making it a good choice for many stock or lightly modified engines. For high-performance or specialized builds, consulting engine specifications or a professional is recommended.

Mahle OE Piston Rings 3150139.045 - 4.040in Bore

Name: Mahle Rings 4.040in Bore 1/16in 3.00MM Plasma Moly Ductile Std Tension Engine Set Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-4-040in-bore-1-16in-3-00mm-plasma-moly-ductile-std-tension--t14-51867
Price: 169.57 USD
Availability: BackOrder

Mahle Rings 4.040in Bore 1/16in 3.00MM Plasma Moly Ductile Std Tension Engine Set Moly Ring Set

$169.57

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, Part# 3150139.045. Features plasma moly ductile iron rings for 4.040in bores.

Key Features

Fits engines with a 4.040-inch bore size.
Includes plasma moly ductile iron piston rings.
Features standard tension for reliable sealing.
Top ring measures 1/16 inch.
Second ring measures 3.00MM.
Mahle OE part number 3150139.045.

This piston ring set is designed for engines with a 4.040-inch bore. Please verify your engine's bore size before ordering.

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Product Details

This Mahle OE Piston Ring Set includes all the rings you need for one engine, specifically designed for a 4.040-inch bore. You get a set of plasma moly ductile iron rings with standard tension, featuring a 1/16 inch top ring and a 3.00MM second ring. These are essential components for rebuilding or refreshing your engine's top end, ensuring a proper seal between the piston and cylinder wall.

Mahle is a well-known name in engine components, and this set is built with their typical attention to detail. The plasma moly coating on the top ring is a durable surface treatment that helps reduce friction and wear, which is crucial for the longevity of your engine. The ductile iron construction of the rings offers good strength and flexibility, allowing them to conform to the cylinder walls for an improved seal. Standard tension is suitable for most stock or mildly modified applications, providing a reliable seal without excessive drag.

When you're putting an engine back together, getting the piston rings right is critical for performance and oil control. This set is designed to fit right and perform as expected, making it a solid option for your engine build.