What does 'standard tension' mean for piston rings?

Standard tension rings are designed to provide a consistent seal against the cylinder wall under normal operating conditions. They offer a balance between sealing performance and the force exerted on the cylinder walls, which is important for engine longevity.

What does 'drop-in rings' refer to?

Drop-in rings are designed to fit the standard groove dimensions on most pistons without requiring any special machining or modifications. This makes them a convenient choice for engine rebuilds where the original pistons are being reused or replaced with standard-sized pistons.

Why is this part not CARB approved?

CARB (California Air Resources Board) approval relates to emissions standards. Parts that are not CARB approved are not legal for sale or use in California due to emissions regulations.

Mahle Piston Rings 4280MS - Standard Tension

Name: Mahle MS 4.280in1/16in 1/16in 3/16in Drop In Rings
Brand: Mahle
SKU: mahle-mahle-ms-4-280in1-16in-1-16in-3-16in-drop-in-rings-t14-29841
Price: 118.05 USD
Availability: BackOrder

Mahle MS 4.280in1/16in 1/16in 3/16in Drop In Rings

$118.05

On Backorder

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

Mahle standard tension piston ring set. Known for quality engine components, this set is a solid choice for engine rebuilds.

Key Features

Mahle standard tension piston ring set.
Features 1/16", 1/16", and 3/16" ring land sizing.
Designed as drop-in rings for standard piston grooves.
Intended to provide a good seal between piston and cylinder wall.
Universal fitment for various engine applications.
Not CARB approved; cannot ship to California.

This is a universal fitment part. Always confirm compatibility with your specific piston and engine specifications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Mahle is a well-known name in engine components, and their piston rings are a popular choice for mechanics rebuilding engines. This particular set, the 4280MS, features standard tension rings with a common 1/16", 1/16", and 3/16" ring land sizing. These are often referred to as "drop-in" rings because they are designed to fit standard piston grooves without needing special machining, making them a straightforward part of a top-end rebuild.

The construction of these rings is intended to provide a good seal between the piston and cylinder wall, which is crucial for proper engine compression and oil control. A good seal helps ensure your engine runs efficiently and lasts longer. While these are a universal fit, always double-check your piston's specific ring groove dimensions to ensure compatibility.

Keep in mind that this ring set is not CARB approved and cannot be shipped to California. Always refer to your vehicle's service manual for specific installation procedures and torque specifications.