What is the purpose of the different ring sizes (.043/.043/3mm)?

The top and second rings (.043 inch) are designed for optimal sealing against the cylinder wall, preventing blow-by. The 3mm oil ring is wider and helps to scrape excess oil from the cylinder walls, preventing it from entering the combustion chamber.

Are these rings suitable for a performance engine build?

Manley Performance is a popular brand for performance engine components. The specific ring dimensions and well-built construction make them a solid option for many engine builds where precise sealing and oil control are important.

What does 'Not CARB approved' mean for this product?

This means the product does not meet the emissions standards set by the California Air Resources Board (CARB). As a result, it cannot be legally sold or shipped to California.

Specifications

Brand: Manley Performance
Part #: 46260-8
UPC: 807298041278

Manley Piston Ring, RING-4.125 .043,3mm

Name: Manley Piston Ring, RING-4.125 .043,3mm
Brand: Manley Performance
SKU: manley-performance-manley-piston-ring-ring-4-125-043-3mm-t14-881718
Price: 313.70 USD
Availability: BackOrder

$313.70

On Backorder

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

Manley Performance piston ring set for 4.125" bore engines. Features .043/.043/3mm ring sizes.

Key Features

Fits engines with a 4.125 inch bore.
Features a .043 inch top ring.
Includes a .043 inch second ring.
Has a 3mm oil ring.
Manley Performance is a well-known brand for internal engine components.
Not CARB approved; cannot ship to California.

⚠️ 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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About this part

Product Details

These Manley piston rings are built with a .043 inch top ring, a .043 inch second ring, and a 3mm oil ring, designed for a 4.125 inch bore. This specific sizing is crucial for proper sealing and oil control within the cylinder, especially in performance or rebuilt engines where precise tolerances are key. Manley is known for making well-built internal engine components, and this ring set is no exception, offering solid construction for reliable operation.

When you're rebuilding an engine or looking to upgrade your internal components, the piston rings are a critical piece of the puzzle. They form the seal between the piston and the cylinder wall, preventing combustion gases from escaping into the crankcase and keeping oil from entering the combustion chamber. The materials and design of these rings, like the specific dimensions Manley has chosen here, directly impact engine performance, oil consumption, and overall longevity. This set is designed to fit right and perform reliably in the intended application.

It's important to note that this ring set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper seating and break-in procedures to ensure optimal performance and durability.