What does 'gapless top ring' mean?

A gapless top ring has ends that meet when closed in the cylinder bore, creating a continuous seal. This design prevents combustion gases from blowing past the ring, which is important for maintaining cylinder pressure and engine performance.

What are the dimensions of these piston rings?

These rings are designed for a 4.000 inch bore. The top ring has a thickness of 1/16 inch, and the oil ring has a thickness of 3/16 inch.

Why is this product not CARB approved?

This piston ring set is not approved by the California Air Resources Board (CARB) for use in emissions-controlled vehicles in California. Therefore, it cannot be shipped to California addresses due to emissions regulations.

Specifications

Brand: Manley Performance
Part #: 46350GT-8
UPC: 807298085159

Manley Piston Ring, RING-4.000 1/16,3/16 GAPLESS TOP

Name: Manley Piston Ring, RING-4.000 1/16,3/16 GAPLESS TOP
Brand: Manley Performance
SKU: manley-performance-manley-piston-ring-ring-4-000-1-16-3-16-gapless-top-t14-881390
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 Performance gapless top piston rings for 4.000" bore engines. Designed for improved sealing.

Key Features

Fits engines with a 4.000 inch bore.
Gapless top ring design creates a solid seal to prevent blow-by.
Features a 1/16 inch top ring and a 3/16 inch oil ring.
Constructed from strong materials for durability in performance applications.
Designed for improved combustion sealing and reduced oil consumption.
Not CARB approved; cannot ship to California.

This product is designed for engines with a 4.000 inch bore. Please verify your engine's bore size before purchasing.

⚠️ 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 Performance gapless top piston rings are built for a 4.000 inch bore. The gapless design means the ring ends meet when closed in the cylinder bore, creating a solid seal that prevents combustion gases from blowing past the ring. This is a critical feature for high-performance applications where maintaining cylinder pressure is key to power and efficiency. The ring set features a 1/16 inch top ring and a 3/16 inch oil ring, a common configuration for many performance engine builds.

Manley uses high-quality materials and advanced manufacturing processes to create these rings. The gapless top ring is constructed from a strong material designed to withstand the high temperatures and pressures found in performance engines. This construction helps ensure consistent sealing across the entire piston stroke, contributing to better power delivery and reduced oil consumption. Proper installation is crucial for these rings to function as intended; always refer to the manufacturer's installation instructions for precise details on gapping and seating.

This set is not CARB approved and cannot be shipped to California. Please ensure compatibility with your local emissions regulations before purchasing. If you are rebuilding a performance engine and need a reliable, well-sealed piston ring setup, this Manley gapless top ring set is a solid option.