What does '0.030 inch undersize' mean for these piston rings?

This means the rings are manufactured to be 0.030 inches larger in diameter than standard size. They are intended for use with pistons that have also been machined to a 0.030 inch larger diameter, typically during an engine rebuild or when cylinders have been bored out.

Why is reducing friction important with piston rings?

Reducing friction helps the engine run more efficiently and can improve fuel economy. It also means less wear on the piston and cylinder walls, contributing to a longer overall engine life and smoother operation.

Are these piston rings suitable for all engine builds?

These rings are designed to meet OE specifications and are a solid option for engine rebuilds on compatible vehicles. However, they are not CARB approved and cannot be shipped to California.

2000-2006 Lincoln LS Piston Rings | Mahle OE

Name: Mahle Rings Ford 3.9L 2000 - 2004 Was Mahle 01521N030 Chrome Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-ford-3-9l-2000-2004-was-mahle-01521n030-chrome-ring-set-t14-49795
Price: 112.09 USD
Availability: BackOrder

Mahle Rings Ford 3.9L 2000 - 2004 Was Mahle 01521N030 Chrome Ring Set

$112.09

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2000-2006 Lincoln LS. Mahle OE chrome piston ring set, 0.030 inch undersize. Minimizes oil consumption and friction.

Key Features

Fits 2000-2006 Lincoln LS and 2002-2005 Ford Thunderbird.
This is a 0.030 inch undersize piston ring set.
Features chrome plating for improved wear resistance and longer service life.
Designed to minimize engine oil consumption.
Helps reduce friction between the piston and cylinder wall for smoother operation.
Built to meet original equipment manufacturer (OE) specifications.

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Product Details

These Mahle OE piston rings are 0.030 inch undersize, meaning they are designed to fit pistons that have been machined to a slightly larger diameter. This is common when rebuilding an engine where the cylinder walls have been honed or bored out. They are built to meet the demanding requirements of OE specifications, focusing on reducing friction between the piston and cylinder wall. This not only helps the engine run more smoothly but also contributes to minimizing oil consumption, keeping your engine running cleaner for longer.

Mahle engineers these rings to balance performance with durability. The chrome plating on the ring surface offers improved wear resistance, which translates to a longer service life for your engine's internal components. By minimizing friction and oil burning, these rings help maintain consistent engine performance and can contribute to better fuel efficiency. They are a well-built choice for anyone rebuilding the engine in their 2000-2006 Lincoln LS or 2002-2005 Ford Thunderbird.