What is the benefit of the moly coating on these rings?

The moly coating on the top and second rings acts as a self-lubricating surface. This helps to reduce friction between the piston ring and the cylinder wall, which in turn minimizes wear and can improve engine efficiency.

Are these rings suitable for a standard engine rebuild or only performance engines?

While designed as a high-tension performance set, the durable construction and moly coating make them a solid option for many engine rebuilds where a strong seal and longevity are desired. Always match ring specifications to your engine's requirements.

What does 'Not CARB approved' mean for shipping?

This means the product does not meet the emissions standards set by the California Air Resources Board (CARB). As a result, it cannot be legally shipped to California or used in vehicles registered in California.

Mahle Piston Rings Moly Ring Set 3150108.035

Name: Mahle Rings 4.535in Bore 1/16in1/16in3/16in PC479 Fire-Power High Tension Perf Eng Set Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-4-535in-bore-1-16in1-16in3-16in-pc479-fire-power-high-tensi-t14-50919
Price: 240.56 USD
Availability: BackOrder

Mahle Rings 4.535in Bore 1/16in1/16in3/16in PC479 Fire-Power High Tension Perf Eng Set Moly Ring Set

$240.56

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 Moly Ring Set for 4.535in bore engines. High tension performance rings.

Key Features

Fits engines with a 4.535 inch bore.
Features a 1/16 inch top ring, 1/16 inch second ring, and 3/16 inch oil ring.
Top and second rings are coated with moly for improved friction reduction and wear resistance.
High-tension design promotes a strong seal against the cylinder wall for better compression.
Mahle OE is a trusted brand for engine components.

This piston ring set is designed for engines with a 4.535 inch bore. Please verify your engine's bore size and specifications before ordering.

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Product Details

These Mahle piston rings are built with a 1/16 inch top ring, a 1/16 inch second ring, and a 3/16 inch oil ring, designed for a 4.535 inch bore. This specific ring set, known as the PC479 Fire-Power High Tension Perf Eng Set, uses moly coatings on the top and second rings. This moly coating is a tough, self-lubricating surface that helps reduce friction and wear, especially important in high-performance or high-tension applications where the rings are under more stress. The high-tension design ensures a solid seal against the cylinder wall, which is crucial for maintaining compression and preventing blow-by.

Mahle is a well-known name in engine components, and this set reflects their focus on durable, well-built parts for demanding engine builds. The combination of precise ring dimensions and the moly surface treatment means these rings are made to handle the heat and pressure found in performance engines. When you're rebuilding the top end of an engine, getting the piston rings right is key to its longevity and performance. These are designed to fit right and perform reliably, contributing to efficient combustion and proper oil control.

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 any other components you might need for your rebuild.