MAHLE 3021294B Performance Piston Ring Set Steel Napier Bore - THM-13 4.045

The MAHLE 3021294B is a high-performance piston ring set engineered for precision engine builds requiring a 4.045-inch bore diameter. This professional-grade ring set features steel Napier-style compression rings with THM-13 coating technology, designed to deliver superior sealing, reduced friction, and enhanced durability in demanding performance applications.

Key Specifications:

• Bore Size: 4.045 inches
• Ring Thickness: 0.043 inches
• Radial Wall: 0.135 inches
• Material: Performance steel construction
• Profile: Napier-style design
• Coating: THM-13 thermal barrier coating
• Configuration: Plain ring set

Features and Benefits:

• THM-13 coating provides excellent heat resistance and wear protection
• Steel construction offers superior strength for high-performance applications
• Napier profile optimizes oil control and compression sealing
• Precision-manufactured to exacting tolerances for proper ring seal
• Ideal for custom engine builds, racing applications, and performance rebuilds

MAHLE is a trusted OEM supplier and aftermarket leader in piston ring technology, providing components used by professional engine builders and performance enthusiasts worldwide. This ring set is designed for engines requiring precise 4.045-inch bore specifications with high-performance sealing characteristics.