Mahle Rings Performance Napier THM-13 4.140in x .043in Plain Ring Set (48 Qty Bulk Pack)

These Mahle OE Performance Napier THM-13 piston rings are built with a specific Napier hook design on the second ring, which helps to scrape oil from the cylinder wall and prevent it from entering the combustion chamber. This design is particularly effective at reducing oil consumption and blow-by, especially in high-performance applications. The rings measure 4.140 inches in bore size and have a 0.043-inch thickness, ensuring a precise fit within the piston groove and cylinder wall for optimal sealing.

Crafted from durable materials, these rings are designed to withstand the rigors of engine operation. The Napier hook on the second ring is a notable feature that contributes to improved oil control and overall engine health. This bulk pack includes 48 sets, making it a solid option for engine builders or shops working on multiple vehicles. Proper installation is key to achieving the intended performance and longevity from these components.