Mahle 41768.030 Engine Piston Ring Set

Engine piston ring set overview

MAHLE 41768.030 is a premium oversize piston ring set for select Ford gasoline engines with a 4.140-inch bore. It is built for direct-injection applications and uses low-friction ring technology to support oil control and long service life.

Key features

• Premium-grade engine piston ring set for 0.030-inch oversize applications
• Plasma-moly face coating helps reduce friction at the ring face
• Ductile iron top ring for strength and wear resistance
• Cast iron second ring and oil ring assembly for stable sealing performance
• Two-piece oil ring assembly with cast iron construction
• Fits Ford E-350, F-250, F-350, F-450, F-550, Excursion, and related chassis applications listed below

Detailed application information

This MAHLE piston ring set is engineered around OE requirements for friction reduction, oil consumption control, and extended service life. The 41768.030 part number identifies a 0.030-inch oversize set with a 4.140-inch bore diameter, plasma-moly facing on the top ring, and cast iron components in the second and oil ring assemblies. It is listed for direct-injection engine sets across multiple Ford truck and van platforms, including Ford E-350 Super Duty, Ford F-350, and Ford F-250 applications.

MAHLE piston rings are developed with a focus on modern ring technology and OE-style performance characteristics. For rebuild work on Ford E-Series and Super Duty engines, this ring set provides the material mix and ring dimensions needed for a proper overhaul when the cylinder bore has been machined to oversize specifications. The 41768.030 part number should be matched carefully to the engine build and bore size before assembly.

What this part helps address

• Excessive oil consumption from worn or out-of-spec rings
• Loss of cylinder sealing during engine rebuilds
• Compression leakage that affects starting and power delivery
• Friction-related wear in high-mileage engine assemblies
• Oversize rebuild requirements after cylinder machining

Installation notes and tips

Confirm bore diameter, ring end gap, and piston groove dimensions before installation. This set is specified for 0.030-inch oversize applications, so it must be matched to the finished cylinder bore during engine assembly. Clean ring grooves thoroughly and follow the engine builder’s measurement procedure for direct-injection applications.

Quality assurance

MAHLE designs piston rings to OE requirements with an emphasis on friction control, oil management, and service life. The 41768.030 part number is a premium engine component intended for rebuilds that require accurate fitment and consistent sealing performance.