What is the purpose of plasma-moly steel top rings?

Plasma-moly steel top rings are chosen for their exceptional hardness and wear resistance. This helps them maintain a tight seal against the cylinder wall under high combustion temperatures and pressures, reducing blow-by and improving engine efficiency.

Why is this a bulk pack of 48 ring sets?

This bulk pack is designed for engine builders or repair shops that work on multiple engines. Having 48 sets on hand ensures you have enough rings for several rebuilds without needing to reorder frequently.

What does 'moly-faced' mean for the oil rings?

Moly-faced oil rings have a molybdenum coating on the scraping surface. This coating helps reduce friction and wear, improving oil control and extending the life of both the rings and the cylinder walls.

Mahle Piston Ring Set 3010989B

Name: Mahle Rings Perf 4.165in x 1.5MM .151 RW Plasma-Moly Steel Top Ring Moly Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-perf-4-165in-x-1-5mm-151-rw-plasma-moly-steel-top-ring-moly-t14-48761
Price: 566.37 USD
Availability: BackOrder

Mahle Rings Perf 4.165in x 1.5MM .151 RW Plasma-Moly Steel Top Ring Moly Ring Set (48 Qty Bulk Pack)

$566.37

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 3010989B. Plasma-moly steel top rings and moly rings for 4.165in bore. Bulk pack of 48.

Key Features

Fits engines with a 4.165-inch bore.
Features plasma-moly steel top rings for improved durability and wear resistance.
Includes moly-faced oil control rings for effective oil management.
Top ring thickness is 1.5mm, and oil ring width is 0.151 inches.
Bulk pack contains 48 individual piston ring sets.
Mahle OE rings are well-built and a popular choice for engine rebuilding.

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Product Details

When you're rebuilding the top end of an engine, getting the piston rings seated correctly is critical for sealing combustion pressure and controlling oil. This Mahle OE Piston Ring Set is designed for a 4.165-inch bore, a common size for many performance and heavy-duty applications. The set includes 48 individual ring sets, making it a practical choice for shops working on multiple engines or for builders who need a substantial quantity on hand.

This set features plasma-moly steel top rings, known for their durability and resistance to wear, paired with moly-faced oil control rings. This combination helps ensure a solid seal against the cylinder wall, which is essential for maintaining compression and preventing blow-by. The 1.5mm top ring and 0.151-inch oil ring dimensions are standard for many performance builds where precise sealing is a priority. Mahle OE rings are well-built and a popular choice among mechanics for their consistent performance and reliability.

Because this is a bulk pack of 48 sets, it's ideal for engine builders or repair shops that handle a high volume of engine work. Please note that this part is not CARB approved and cannot be shipped to California.