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

The second ring, often called the 'second land' or 'compression ring', works in conjunction with the top ring to maintain cylinder compression. It also helps to scrape excess oil from the cylinder wall before it reaches the oil control ring.

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

Grey iron is a common material for piston rings because it offers good wear resistance and thermal conductivity. It can withstand the high temperatures and pressures found in the combustion chamber while also helping to dissipate heat away from the piston.

What does 'standard gap' mean for a piston ring?

A standard gap refers to the typical clearance between the ends of the piston ring when installed in the cylinder bore. This clearance is critical for allowing the ring to expand with heat and maintain proper sealing pressure against the cylinder wall.

Mahle OE Piston Rings 3021035 - Standard Gap

Name: Mahle Rings 3.9700in X 5/64in Edge Width Grey Iron RBT Std Gap Second Ring Plain Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-3-9700in-x-5-64in-edge-width-grey-iron-rbt-std-gap-second-r-t14-52051
Price: 40.99 USD
Availability: BackOrder

Mahle Rings 3.9700in X 5/64in Edge Width Grey Iron RBT Std Gap Second Ring Plain Ring Set

$40.99

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 with a 3.9700in edge width and standard gap. Built for reliable engine performance.

Key Features

Fits engines requiring a 3.9700-inch piston ring with a 5/64-inch edge width.
Constructed from grey iron for reliable performance and durability.
Standard gap design for the second ring position.
RBT design contributes to a proper seal against the cylinder wall.
Plain ring type for straightforward functionality.
Mahle OE part number 3021035 ensures original equipment specifications are met.

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Product Details

These Mahle OE piston rings feature a 3.9700-inch edge width and a standard gap, specifically designed for the second ring position. They are constructed from grey iron, a material known for its durability and ability to handle the heat and pressure within an engine cylinder. The RBT design and plain ring construction ensure a solid seal against the cylinder wall, which is crucial for maintaining compression and preventing oil from entering the combustion chamber.

Choosing the right piston rings is essential for the overall health and performance of your engine. These rings are made to meet the original equipment specifications, meaning they are built to fit and function just like the parts your vehicle came with from the factory. This attention to detail helps ensure proper oil control and compression, contributing to smooth engine operation and longevity. If you're rebuilding an engine or replacing worn-out components, these Mahle rings offer a well-built option to get your engine running right.