Piston Ring Set Cummins 4089811 | 3803471, 3103157, 3103158, 4058969

High-Performance Piston Ring Set for Cummins NT855 Engines

The Cummins 4089811 Piston Ring Set is engineered to restore your heavy-duty diesel engine’s peak functionality and cylinder compression. Designed specifically for Cummins NT855 engines, this premium-grade piston ring set provides excellent protection against cylinder wear while facilitating efficient heat transfer from the hot piston to the cooled cylinder wall. This part is also available under the numbers: 3803471, 3103157, 3103158, and 4058969.

Maintaining high-quality piston rings is essential for preventing oil blow-by, reducing emissions, and ensuring optimal combustion efficiency. This complete kit is offered as a matched set to eliminate compatibility issues during installation, making engine maintenance, repair, or overhaul straightforward and reliable.

Technical Specifications

• Engine Compatibility: Cummins NT855
• Standard Size (STD): 139.70 mm
• Ring Dimensions: 3.70 mm x 2.90 mm x 2.80 mm x 4.80 mm

Key Features & Benefits

• Peak Compression Restoration: Helps restore and maintain optimal cylinder compression for maximum engine power.
• Superior Wear Protection: Protects cylinders and critical engine components from premature wear under heavy loads.
• Efficient Heat Dissipation: Directs heat away from the piston crown into the cooled cylinder block to prevent overheating.
• Complete Kit: Packaged as a complete set to ensure perfect compatibility and hassle-free installation.

Cross-Reference / Interchange Part Numbers

This part replaces / is interchangeable with the following part numbers:

• 4089811
• 3803471
• 3103157
• 3103158
• 4058969
• 3801755
• 218025
• 216983
• 3056429
• 3082580
• 3801049
• 3025088
• 3800078
• 3260571
• 3262393