Belt Tensioner Cummins 5287021 | 5267127

High-Performance Belt Tensioner for Cummins Engines

The Cummins 5287021 Belt Tensioner is a critical component designed to maintain precise tension on the serpentine belt. By applying consistent pressure, it compensates for natural belt wear and thermal expansion, ensuring that power is efficiently transferred to vital engine accessories such as the alternator, water pump, and air conditioning compressor.

Key Features and Benefits

• Automatic Adjustment: Features a spring-loaded mechanism that automatically adjusts to maintain optimal tension across varying operating conditions.
• Heavy-Duty Construction: Manufactured with high-quality materials resistant to wear and corrosion, specifically engineered for demanding commercial truck environments.
• System Protection: Prevents belt slippage and reduces vibration, extending the service life of both the belt and the driven pulleys.
• Smooth Operation: Designed to perform reliably under extreme temperatures and high-load industrial applications.

Engine Compatibility

This belt tensioner is compatible with a wide range of Cummins engine series, including:

• F3.8 Series: CM2350 F120B, CM2620 F137B, F102, CM2620 F139B
• ISF3.8 Series: CM2220 AN, CM2220 F103, CM2350 F109
• QSF3.8 Series: CM2880 F112
• D4.0 Series: CM2620 D103B

Technical Specifications

• Part Number: 5287021
• Weight: 3.09 lb
• Dimensions: 8.27 x 4.33 x 4.33 in