MAHLE 3021192B Steel Napier Ring Set Bore - 4.615 1.0mm THM-13

The MAHLE 3021192B is a precision-engineered piston ring set designed for high-performance engine applications requiring a 4.615-inch bore diameter. This ring set features steel Napier construction with THM-13 coating technology, providing superior wear resistance and oil control characteristics.

Key Specifications:

• Bore diameter: 4.615 inches
• Ring thickness: 1.0mm
• Radial wall thickness: 0.136 inches
• Material: Steel with Napier design
• Surface treatment: THM-13 coating
• Plain ring configuration

MAHLE's Napier ring design incorporates a specialized groove profile on the ring face that enhances oil distribution and reduces friction during engine operation. The THM-13 thermal coating provides improved heat dissipation and extended service life in demanding applications. This plain ring set is ideal for rebuilds, performance upgrades, and OEM replacement applications where precise bore sizing and superior ring sealing are critical.