Belt Tensioner Cummins 5287020 | 4980639

Reliable Belt Management for Cummins Engines

The Cummins 5287020 Belt Tensioner is a critical component engineered to maintain precise tension on the engine’s drive belts. By automatically adjusting to belt stretch and wear, this tensioner ensures the efficient transfer of power from the engine to vital accessory systems, including the alternator, water pump, and air conditioning compressor.

Key Features and Benefits

• Automatic Adjustment: Features a robust spring-loaded mechanism that maintains optimal tension throughout the belt’s lifecycle.
• Durable Construction: Built with high-quality materials designed to withstand the heavy-duty demands of commercial truck operations.
• System Protection: Reduces vibrations and absorbs shocks, protecting the alternator mounting and pulleys from premature wear.
• Enhanced Efficiency: Prevents belt slippage, ensuring consistent power delivery and reducing the risk of battery charging issues or engine overheating.

Engine Compatibility

This belt tensioner is designed for a wide range of Cummins engine configurations, including:

• F3.8 Series: CM2350 F120B, CM2620 F137B
• ISF3.8 Series: CM2220 AN, CM2220 F103, CM2350 F109
• QSF3.8 Series: CM2880 F112
• F4.5 Series: CM2620 F139B, CM2620 F141C
• ISF4.5 Series: CM2220 F123
• ISF2.8 Series: CM2220 F129
• D4.0 Series: CM2620 D103B

Technical Specifications

• Weight: 3.26 lb
• Dimensions: 8.27 x 3.94 x 3.94 in
• Part Number: 5287020
• Cross Reference: 4980639