MAHLE 3021140B Plain Ring Set 5.005" Bore .043" Thickness

The MAHLE 3021140B is a precision-engineered plain compression ring designed for high-performance engine rebuilds and racing applications. This ring features a .043-inch (1.09mm) thickness and is designed for a 5.005-inch bore diameter, making it suitable for large displacement engines requiring precise clearances.

Key Specifications:

• Bore Size: 5.005 inches
• Ring Thickness: .043 inches
• Radial Wall Thickness: .190 inches
• Design: Plain second groove compression ring
• Part Number Cross-Reference: PC479

MAHLE pistons and rings are manufactured to OEM standards with advanced materials and coatings. This plain ring design provides reliable compression sealing in the second ring groove position, essential for maintaining proper cylinder pressure and oil control. The .043-inch profile offers reduced friction while maintaining durability for demanding applications.

Application Note: This is a precision component sold individually. Verify bore size and ring specifications match your engine requirements before installation.