What does the .043in and 3mm sizing refer to?

The .043 inch measurement refers to the thickness of the top compression ring, and the 3mm measurement refers to the thickness of the oil control ring. These sizes are critical for proper fitment with your pistons and cylinder bore.

Can these rings be used in any engine build?

These rings are specifically sized for a 4.030 inch cylinder bore. You must verify that your pistons and engine block are designed for this bore size. They are also not CARB approved and cannot be shipped to California.

What is the benefit of a 3mm oil ring?

A 3mm oil ring is a common and effective design for controlling oil within the cylinder. It helps prevent excess oil from entering the combustion chamber, which can lead to oil burning and fouling spark plugs, thus promoting better engine health and performance.

Specifications

Brand: Manley Performance
Part #: 46223ST-8
UPC: 807298072104

Manley Piston Ring, RING-4.030 .043,3mm

Name: Manley Piston Ring, RING-4.030 .043,3mm
Brand: Manley Performance
SKU: manley-performance-manley-piston-ring-ring-4-030-043-3mm-t14-881713
Price: 451.39 USD
Availability: BackOrder

$451.39

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 4.030in bore, .043in top ring, 3mm oil ring. Essential for proper engine sealing and performance.

Key Features

Piston ring set designed for a 4.030 inch bore.
Features a .043 inch top ring for effective combustion sealing.
Includes a 3mm oil ring for proper oil control.
Manley Performance is a well-known name in 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

If you're rebuilding the top end of your engine, getting the right piston rings is crucial for sealing the combustion chamber and ensuring your engine runs smoothly. This set from Manley Performance is designed for a 4.030 inch bore, with a .043 inch top ring and a 3mm oil ring. These dimensions are common in many performance and some stock applications, so it's important to verify your piston bore size before ordering.

Manley is known for making well-built internal engine components, and these rings are no exception. They're made to handle the pressures and heat inside a running engine, helping to prevent blow-by and keep oil from entering the combustion chamber. This means better compression, more consistent power delivery, and a cleaner-burning engine. The 3mm oil ring is a robust design that helps manage oil effectively, which is key for engine longevity and preventing oil consumption.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual or build specifications to confirm the correct ring sizes and types needed for your project.