Mahle Rings Perf 4.155in x 1.5MM .151 RW Plasma-Moly Steel Top Ring Moly Ring Set (48 Qty Bulk Pack)

Mahle is a well-known name in the automotive industry, especially for their engine components. This particular set of piston rings, part number 3010987B, is designed for performance applications and comes in a bulk pack of 48 sets. These rings are built for a 4.155-inch bore size, which is a common specification for many performance and heavy-duty engines.

The top rings in this set are made from plasma-moly steel, a strong material chosen for its durability and ability to withstand high temperatures and pressures found in performance engines. The plasma-moly coating further enhances wear resistance, helping these rings maintain their seal and performance over time. The ring set features a 1.5mm top ring thickness and a 0.151-inch oil ring width, with a unique rail design for improved sealing. This combination of materials and design helps ensure a solid seal between the piston and cylinder wall, which is crucial for efficient combustion, proper oil control, and overall engine health.

This is a bulk pack containing 48 individual ring sets, making it a practical choice for engine builders or shops working on multiple vehicles. Please note that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for installation procedures and recommended clearances.