What is the primary function of a second ring in an engine piston?

The second ring, also known as the intermediate ring, works in conjunction with the top compression ring. Its main job is to control blow-by, which is combustion gas escaping past the piston rings into the crankcase. It also helps to scrape excess oil from the cylinder wall.

Why is the material (grey iron) important for piston rings?

Grey iron is a popular choice for piston rings because it offers a good balance of wear resistance and thermal conductivity. It can withstand the high temperatures and pressures within the cylinder while providing a surface that wears in well with the cylinder wall, helping to maintain a good seal over time.

Can these piston rings be shipped to California?

No, this specific set of Mahle piston rings is not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle OE Piston Rings 3020695 - Grey Iron BT Second Ring

Name: Mahle Rings 3.3858in X 1.5MM Edge Width Grey Iron BT Second Ring Plain Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-3-3858in-x-1-5mm-edge-width-grey-iron-bt-second-ring-plain--t14-52634
Price: 30.05 USD
Availability: BackOrder

Mahle Rings 3.3858in X 1.5MM Edge Width Grey Iron BT Second Ring Plain Ring Set

$30.05

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 Rings, 3.3858in X 1.5MM Grey Iron BT Second Ring Set. A well-built replacement for your engine's needs.

Key Features

Fits engines requiring a 3.3858-inch diameter piston ring.
Features a 1.5mm edge width for the second ring.
Constructed from durable grey iron for good wear resistance.
Mahle OE part number 3020695 ensures direct replacement compatibility.
BT second ring design is optimized for blow-by control.

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Product Details

This grey iron BT second ring set from Mahle OE features a 1.5mm edge width and a 3.3858-inch diameter. These rings are a crucial part of your engine's sealing system, working with the piston and cylinder wall to control combustion pressure and oil consumption. The BT designation indicates a specific design for the second ring's function, which is primarily to control blow-by and support the top ring.

Mahle OE uses grey iron for these rings, a material known for its good wear characteristics and ability to handle the heat and pressure found in an engine cylinder. The plain ring design is a straightforward and reliable choice for many engine rebuilds. Ensuring proper ring seal is key to maintaining engine performance and efficiency, and these rings are made to fit right and perform as expected.

When rebuilding an engine, the piston rings are a small but vital component. This set is designed to meet the needs of a standard engine rebuild where reliable performance and durability are important. Please note that this part is not CARB approved and cannot be shipped to California.