Mahle Rings Perf Steel Napier THM-13 4.185in x .1.5MM .150RW Bulk Plain Ring Set (48 Qty Bulk Pack)

If you're rebuilding an engine, Mahle OE Performance Steel Napier Piston Rings are a solid choice for getting your cylinders sealed up right. These rings are designed for performance applications, featuring a Napier hook design on the second ring which helps with oil control and blow-by. The steel construction means they're built to handle the pressures of a performance engine.

This is a bulk pack containing 48 rings, making it ideal for shops or anyone working on multiple engines or a large V-configuration. The 4.185-inch bore size and specific ring dimensions (.1.5MM top ring, .150RW second ring) are critical for proper fitment in the intended application. Mahle is a well-known name in engine components, and these rings reflect their commitment to producing reliable parts for engine builds.