MAHLE 3021378 Performance Piston Ring Set - 4.0748" Bore, Chrome, Grey Iron

The MAHLE 3021378 is a high-performance piston ring set engineered for demanding applications requiring precise bore specifications and reliable sealing. This chrome ring set features premium grey iron construction with a 4.0748-inch bore diameter, designed to deliver optimal compression and oil control in performance engine builds.

Key Specifications:

• Bore Diameter: 4.0748 inches (103.50mm)
• Ring Width: 2.0mm top compression ring
• Radial Wall Thickness: 0.178 inches
• Material: Performance grey iron with chrome facing
• Design: BT-10UF profile for enhanced sealing and durability

Features and Benefits:

• Chrome-plated ring face provides exceptional wear resistance and extended service life
• Premium grey iron construction ensures dimensional stability under high temperatures
• Precision-machined to tight tolerances for optimal ring seal and reduced blow-by
• BT-10UF profile optimized for performance applications and efficient oil control
• Designed and manufactured by MAHLE, a trusted OE supplier to major automotive manufacturers

This ring set is ideal for performance engine rebuilds, racing applications, and high-output builds where precise bore specifications and reliable compression sealing are critical. MAHLE's advanced metallurgy and precision manufacturing ensure consistent quality and performance in the most demanding conditions.