MAHLE S41905 Piston Ring Set Chrome Cummins 4BT3.9 6BT5.9 Diesel 17.3:1 CR

The MAHLE S41905 is a chrome piston ring set engineered for Cummins B-Series diesel engines, specifically the 4BT3.9 and 6BT5.9 platforms operating at a 17.3:1 compression ratio. MAHLE is a globally recognized OEM and aftermarket supplier of pistons, rings, and engine components, and this ring set is manufactured to meet or exceed original equipment specifications.

Key Features:

• Chrome-faced top ring for enhanced wear resistance and heat tolerance
• Designed for Cummins 4BT3.9 and 6BT5.9 diesel engines
• Engineered for 17.3:1 compression ratio applications
• Manufactured to OEM tolerances for proper sealing and oil control
• High-quality materials designed to withstand the demands of diesel combustion
• MAHLE OEM-level engineering for reliable performance and long service life

MAHLE piston rings are a trusted choice for engine rebuilders and diesel technicians performing overhauls on Cummins B-Series engines commonly found in light-duty trucks, vans, agricultural, and industrial applications. Proper ring sealing ensures maximum compression, reduced oil consumption, and optimal engine efficiency.