What does a 'gapless' top ring do?

A gapless top ring has its ends meet without a gap, which creates a more consistent seal against the cylinder wall. This helps prevent combustion gases from escaping past the ring, potentially improving compression and reducing blow-by.

What is the significance of the .043" top ring thickness and 3/16" oil ring?

The .043 inch thickness is a common specification for performance top rings, balancing sealing ability with ring land space. The 3/16 inch oil ring is a standard size designed to effectively control oil on the cylinder walls.

Why can't these rings be shipped to California?

These piston rings are not CARB (California Air Resources Board) approved. This means they do not meet California's emissions standards and therefore cannot be legally shipped to or sold within the state.

Specifications

Brand: Manley Performance
Part #: 46558GT-8
UPC: 807298072333

Manley Piston Ring, RING-4.600 .043,3/16 GAPLESS TOP

Name: Manley Piston Ring, RING-4.600 .043,3/16 GAPLESS TOP
Brand: Manley Performance
SKU: manley-performance-manley-piston-ring-ring-4-600-043-3-16-gapless-top-t14-881402
Price: 666.12 USD
Availability: BackOrder

$666.12

On Backorder

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

Manley Piston Ring Set 46558GT-8. Features a 4.600" bore size and a gapless top ring design for improved sealing.

Key Features

Fits a 4.600 inch bore.
Features a .043 inch thick top ring.
Includes a 3/16 inch gapless top ring design for improved cylinder sealing.
Manley Performance is a well-known brand for 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

The gapless top ring design on this Manley Piston Ring set is a notable choice for builders looking to maximize cylinder sealing. This specific ring measures 4.600 inches in bore diameter and features a .043 inch thickness for the top ring, with a 3/16 inch oil ring. This configuration is engineered to create a more consistent seal against the cylinder wall, which can lead to improved compression and reduced blow-by, especially under demanding conditions.

Manley Performance is known for producing well-built engine components, and these piston rings are no exception. The gapless top ring design means the ends of the ring meet without a gap, preventing combustion gases from escaping past the top ring. This is a significant advantage for engines that are being built for high performance or are experiencing issues with blow-by. The 3/16 inch oil ring is also a common size, designed to effectively scrape oil from the cylinder walls and return it to the crankcase, helping to prevent oil consumption.

When rebuilding an engine, the details matter, and piston rings are a critical component for proper engine function. This set is designed for a 4.600 inch bore, so be sure to verify this measurement for your pistons. Please note that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine build specifications and manufacturer instructions for proper installation and compatibility.