Federal Military Parts (763) 310-9340
Belt tensioner for SN 196900 AND BELOW, NSN 2920-01-420-7894
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Part number 2920-01-420-7894 is a National Stock Number (NSN) assigned to an automatic serpentine belt tensioner assemblY.
Description
This heavy-duty mechanical component features a cast metal tensioner arm housing an internal, high-tension spring system. It works by maintaining continuous, calculated pressure against the engine's serpentine accessory drive belt. This constant force counteracts belt stretch, absorbs engine vibrations, prevents slippage, and ensures efficient power delivery to the engine's accessories.
Alternate & Cross-Reference Numbers: RCSK17562, 3802287, 12469149-1, 20-2513, 20-8021, and 21-0662.
Primary Fitment: Used on AM General High Mobility Multipurpose Wheeled Vehicles (HMMWV / Humvee) equipped with the 6.5-liter diesel engine.
Specific Vehicle Compatibility: This part is engineered for older vehicle variants with engine serial numbers 196900 and below (before transitioning to the newer style tensioner layout used on the A2 series.)
Common Model Variants: Fits tactical Humvee models including the M998, M1025A2, M1035A2, M1043A2, M1045A2, M1097A2, and M1114.
