What is a gapless top piston ring and why is it beneficial?

A gapless top piston ring has ends that meet precisely, creating a continuous seal around the piston. This unique design helps prevent combustion gasses from escaping past the piston into the crankcase, which can lead to improved compression and power.

What specific bore size are these rings intended for?

These Manley Performance piston rings are designed for engines with a 4.030 inch bore. It's crucial to ensure this matches your engine's cylinder bore for proper fitment and sealing.

Are there any shipping restrictions for this product?

Yes, these piston rings are not CARB approved and therefore cannot be shipped to California. Please check local regulations if you are outside of California.

Specifications

Brand: Manley Performance
Part #: 46213GT-8
UPC: 807298072050

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

Name: Manley Piston Ring, RING-4.030 .043,3mm GAPLESS TOP
Brand: Manley Performance
SKU: manley-performance-manley-piston-ring-ring-4-030-043-3mm-gapless-top-t14-881433
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. 4.030 inch bore, 3mm top ring. Not CARB approved.

Key Features

This product is a set of Manley Performance gapless top piston rings.
Designed for a 4.030 inch bore.
Features a 3mm top ring with a gapless design for a continuous seal.
The gapless design helps prevent combustion gas blow-by.
This part is not CARB approved and cannot be shipped to California.

This product is a universal engine component and fitment depends on the specific engine bore size and piston groove dimensions. Always confirm compatibility with your engine build specifications.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

When you're rebuilding the top end of your engine, the piston rings are a critical component that seal the combustion chamber and control oil consumption. What you get in this package are Manley Performance's gapless top piston rings, specifically designed for a 4.030 inch bore with a 3mm top ring. These aren't your standard rings; the gapless design means the ends of the top ring meet precisely, creating a continuous seal around the piston. This unique design helps prevent blow-by, which is when combustion gasses escape past the piston into the crankcase, and can significantly improve compression and power.

Manley Performance is known for making well-built internal engine components, and these rings are no exception. The gapless top ring is a more advanced design compared to traditional rings with a gap. This continuous seal is particularly beneficial in high-performance applications where cylinder pressures are higher. By minimizing blow-by, these rings help maintain consistent cylinder pressure, leading to more efficient combustion and potentially improved power output. They are designed to fit precisely into the piston groove, ensuring a solid seal right out of the box.

It's important to note that these rings are not CARB approved and cannot be shipped to California. Always refer to your specific engine build plans and manufacturer's instructions when installing internal engine components. Proper installation is key to achieving the benefits of this gapless design and ensuring the longevity of your engine rebuild.