What does '0.040 inch undersize' mean for these piston rings?

This means the rings are manufactured to be slightly smaller than the standard size. They are intended for use when the engine's cylinder bores have been machined (honed or bored) to a larger diameter, specifically 0.040 inches over the original factory bore size, to ensure a proper seal.

What is the benefit of using Mahle OE piston rings?

Mahle OE rings are developed with a focus on reducing friction and engine oil consumption. They aim to provide a longer service life and help restore lost engine compression, contributing to better overall engine performance and efficiency.

Are these rings suitable for all 2.5L Nissan engines?

These rings are specifically designed for the Nissan QR25DE and QR25DER engine families found in various models like the Altima, Frontier, and Rogue. Always verify fitment for your specific vehicle year and model to ensure compatibility.

Mahle Piston Ring Set 42286CP.040 - Nissan 2.5L QR25DE

Name: Mahle Rings Nissan 2.5L 4 Cyl 2007-2015 QR25DE QR25DER Plain Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-nissan-2-5l-4-cyl-2007-2015-qr25de-qr25der-plain-ring-set-t14-48888
Price: 112.90 USD
Availability: BackOrder

Mahle Rings Nissan 2.5L 4 Cyl 2007-2015 QR25DE QR25DER Plain Ring Set

$112.90

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 for Nissan 2.5L QR25DE engines. This 0.040 inch undersize set helps restore compression and reduce oil consumption.

Key Features

Fits a range of Nissan 2.5L 4-cylinder QR25DE and QR25DER engines.
This is a 0.040 inch undersize piston ring set, intended for use with bored cylinders.
Mahle OE rings are designed to reduce friction and engine oil consumption.
Helps restore compression and improve engine performance.
Built to meet OE requirements for durability and efficiency.

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Will this fit your vehicle?

Product Details

If you're rebuilding the top end of your Nissan's 2.5L QR25DE engine, a fresh set of piston rings is crucial for restoring lost compression and minimizing oil burning. This plain ring set from Mahle OE is designed to meet the demands of these engines, fitting a range of Nissan models like the Altima, Frontier, and Rogue from the mid-2000s through the late 2010s.

Mahle OE piston rings are well-built with a focus on reducing friction and ring mass, which helps improve engine efficiency and extend service life. This particular set is 0.040 inch undersize, meaning it's intended for use when the cylinder bores have been machined to a slightly larger diameter during an engine rebuild. Using the correct size rings is essential for a proper seal against the cylinder wall, ensuring optimal performance and durability.

When you're putting an engine back together, using reliable components like these Mahle rings makes a big difference. They are designed to minimize oil consumption and provide a solid seal, helping your engine run smoothly and efficiently for miles to come.