Mahle Rings 4.3800in X .017in Plasma-Moly Dykes Ductile Top Comp Ring Moly Ring Set (48 Qty Bulk Pk)

If you're rebuilding an engine that requires a 4.3800-inch bore, this Mahle OE Moly Ring Set is a solid option. Mahle is a well-known name in engine components, and these rings are built for demanding applications where durability and proper sealing are critical. This particular set features plasma-moly ductile top compression rings, which are known for their wear resistance and ability to maintain a good seal against the cylinder wall, even under high heat and pressure.

The ductile iron construction of the top ring offers good tensile strength, while the plasma-moly coating provides an improved surface for the cylinder bore, reducing friction and extending ring life. The dykes design in the top ring helps to prevent ring flutter and maintain consistent contact. This bulk pack contains 48 sets, making it suitable for shops or builders working on multiple engines or larger projects. Proper ring gap and installation are crucial for engine performance and longevity, so always refer to your engine's service manual for specific clearances and procedures.

Keep in mind that this ring set is not CARB approved and cannot be shipped to California. Ensure your engine build specifications match the 4.3800-inch bore size before ordering.