What is a Dykes-style top ring?

A Dykes-style top ring has a specific shape, often with a tapered or angled face, designed to improve oil control and create a more effective seal against the cylinder wall, especially under high-performance conditions. This design can help prevent oil from entering the combustion chamber.

What does the '.017in' refer to on these rings?

The '.017in' refers to the specific thickness or width of the top ring groove on the piston that this ring is designed to fit into. It's crucial that this dimension matches your piston's specifications for proper installation and function.

Is this ring set compatible with all engines that have a 4.190-inch bore?

While the bore diameter is a primary fitment factor, piston ring compatibility also depends on the piston design and the specific groove dimensions. Always consult your engine's service manual and piston manufacturer's specifications to confirm compatibility with this .017-inch Dykes-style top ring set.

Mahle OE Piston Rings 4.190in Bore .017in Dykes PC479 - 3010

Name: Mahle Rings 4.190in Bore Dia .017in Dykes PC479 Top Rings Plain Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-4-190in-bore-dia-017in-dykes-pc479-top-rings-plain-ring-set-t14-51338
Price: 966.80 USD
Availability: BackOrder

Mahle Rings 4.190in Bore Dia .017in Dykes PC479 Top Rings Plain Ring Set (48 Qty Bulk Pack)

$966.80

On Backorder

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

Mahle OE Piston Rings, 4.190in bore, .017in Dykes, PC479 top ring set (48 qty bulk pack).

Key Features

Fits engines with a 4.190-inch bore diameter.
Features a .017-inch Dykes-style top ring for improved oil control and sealing.
Includes 48 rings per bulk pack, suitable for multiple engine builds.
Mahle OE rings are a popular choice for engine rebuilding due to their reliability.
Designed for proper sealing between piston and cylinder wall to maintain compression.

These piston rings are designed for a 4.190-inch bore diameter. Please verify this specification matches your engine's requirements before purchase.

Secure CheckoutFast Shipping631-982-0042

Product Details

This is a bulk pack of 48 Mahle OE PC479 top piston rings, designed for a 4.190-inch bore diameter and featuring a .017-inch Dykes-style top ring. These rings are a critical component for rebuilding or overhauling an engine, ensuring a proper seal between the piston and cylinder wall. A good seal is essential for maintaining compression, controlling oil consumption, and achieving optimal engine performance and longevity. Mahle OE rings are well-known in the industry for their reliability and consistent performance, making them a solid choice for professional engine builders and serious DIYers alike.

The .017-inch Dykes-style top ring is a specific design choice that can offer improved oil control and a better seal under certain operating conditions compared to standard ring designs. This particular ring set is a bulk pack, intended for shops or individuals undertaking multiple engine builds or working on engines that require a large quantity of rings. The precision manufacturing that Mahle is known for means these rings will fit right and perform as expected, contributing to a strong and healthy engine rebuild. Proper installation is key, and it's always recommended to follow the manufacturer's detailed installation instructions to ensure the rings seat correctly and function optimally within the cylinder.

When undertaking a significant engine project, having reliable components like these Mahle piston rings is paramount. This bulk pack is suited for applications where multiple engines are being serviced, such as in a performance shop or for fleet maintenance. Ensure you have the correct piston and cylinder bore dimensions before ordering, as these rings are specifically sized for a 4.190-inch bore. Always refer to your engine's service manual for specific ring installation procedures and any related components that may be needed for a complete engine overhaul.