MAHLE 3021349 Performance Steel Napier Piston Ring Set Bore - 4.325

The MAHLE 3021349 is a high-performance piston ring set engineered for precision engine builds requiring a 4.325-inch bore diameter. This professional-grade ring set features MAHLE's advanced steel Napier design for the second compression ring, delivering superior sealing and oil control in demanding performance applications.

Key Specifications:

• Bore Size: 4.325 inches
• Ring Thickness: 0.043 inches
• Radial Width: 0.135 inches
• Second Ring Design: Performance Steel Napier profile
• Ring Finish: Plain (non-coated)

MAHLE's steel Napier ring design provides excellent combustion seal and enhanced durability under high cylinder pressures. The precise radial wall thickness ensures optimal tension against the cylinder wall for consistent sealing throughout the engine's operating range. This ring set is ideal for performance engine builds, racing applications, and high-output street engines where reliability and power retention are critical.

As a complete ring set, this kit includes all necessary piston rings for proper engine assembly. MAHLE's precision manufacturing ensures tight tolerances and consistent quality for professional engine builders and performance enthusiasts.