MAHLE 3021236 Performance Piston Ring Set Bore Napier Steel Ring - 4.320 with 2nd

The MAHLE 3021236 is a high-performance piston ring set engineered for precision and durability in demanding engine applications. Designed for a 4.320-inch bore diameter, this ring set features advanced materials and construction to deliver superior sealing and longevity.

Key Features:

• 4.320-inch bore diameter for precise fitment
• Performance Napier steel 2nd compression ring for enhanced strength and heat resistance
• 1.0mm ring thickness for optimal seal and reduced friction
• 0.136-inch radial wall (RW) dimension
• Plain ring profile design
• MAHLE OE-quality manufacturing standards

MAHLE is a globally recognized leader in engine components, and this ring set exemplifies their commitment to precision engineering. The Napier-style steel 2nd ring provides excellent oil control and compression sealing, making this set ideal for performance rebuilds and racing applications where reliability under high stress is critical.