Thermo King 78-0929 Alternator to Water Pump Belt

The Thermo King 78-0929 is a high-mount alternator-to-water-pump drive belt designed for SB-series transport refrigeration units powered by Isuzu SE 2.2 diesel engines. It transmits rotational power from the engine crankshaft to the alternator and water pump, ensuring electrical generation and coolant circulation for the refrigeration system. Constructed from high-grade EPDM rubber with reinforced polyester tensile cords, the belt resists heat, ozone, and oil degradation typical in refrigeration unit compartments. The belt cross-section measures 10 mm top width by 1196 mm outside length (47.10 inches). It replaces Thermo King OEM part numbers 9124C42H45 and 78-0929. Compatible applications include Thermo King SB-II, SB-II Max (30 & 50), SB-III (30), SB 100, SB 190, Sentry II, Super II SL, and Spectrum SB-III Multi-Temp units equipped with the SE 2.2 engine.