What is the purpose of piston rings?

Piston rings serve several vital functions. They seal the combustion chamber to maintain compression, control the amount of oil that reaches the cylinder walls, and help transfer heat from the piston to the cylinder wall for dissipation.

What does the sizing (1.2mm, 1.2mm, 2.8mm) refer to?

These measurements refer to the thickness of the individual rings. The first two numbers (1.2mm) typically denote the compression rings, while the third number (2.8mm) is for the oil control ring. These specific dimensions are critical for proper sealing and oil control in an engine with an 87.75mm bore.

Is this ring set CARB approved?

No, this piston ring set is not CARB approved and cannot be shipped to California due to emissions regulations.

Specifications

Brand: Manley Performance
Part #: 46877-1

Manley Ring 87.75mm 1.2mm 1.2mm 2.8mm (SINGLE)

Name: Manley Ring 87.75mm 1.2mm 1.2mm 2.8mm (SINGLE)
Brand: Manley Performance
SKU: manley-performance-manley-ring-87-75mm-1-2mm-1-2mm-2-8mm-single-t14-597486
Price: 42.78 USD
Availability: BackOrder

$42.78

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 87.75mm bore. This single ring set is a direct replacement.

Key Features

This is a single piston ring set from Manley Performance.
Designed for an 87.75mm cylinder bore.
Features a 1.2mm top ring, 1.2mm second ring, and a 2.8mm oil ring.
Part number 46877-1.

⚠️ 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

This is a single piston ring from Manley Performance, part number 46877-1. It's designed for an 87.75mm bore and features a specific profile with a 1.2mm top ring, 1.2mm second ring, and a 2.8mm oil ring. These rings are crucial for sealing the combustion chamber, controlling oil consumption, and transferring heat from the piston to the cylinder wall. Manley is known for making well-built internal engine components, and these rings are no exception. They are built to meet the demands of performance and everyday driving.

When rebuilding or refreshing an engine, the piston rings are a critical component. They need to provide a tight seal against the cylinder wall to maintain compression and prevent blow-by, while also allowing the piston to move freely. The specific dimensions of this ring set—1.2mm for the compression rings and 2.8mm for the oil ring—are designed for optimal performance in engines with an 87.75mm bore. Proper installation is key to ensuring these rings function as intended and contribute to the longevity of your engine.