78-1366 Belt Engine to Compressor for Thermo King MD-200 w/TK 3.74 Engine

Belt Engine to Compressor for Thermo King MD-200

This belt connects the engine to the compressor in a Thermo King MD-200 reefer unit and is referenced by OEM cross-reference numbers 78-1366 and TK 3.74 Engine. It is the belt for Thermo King MD-200 that transfers power from the engine to the compressor, keeping the refrigeration system operating. This belt for Thermo King MD-200 is a direct replacement for the 78-1366 belt, designed to maintain proper tension and drive performance.

Overview

This engine to compressor belt, part number 78-1366, is built for the Thermo King MD-200 and matches the TK 3.74 Engine application. It is the belt for Thermo King MD-200 that transmits rotational force from the engine to the compressor, ensuring continuous cooling operation. This 78-1366 belt for Thermo King MD-200 provides a reliable fit and function for reefer unit maintenance.

Built For Performance

• Reinforced rubber construction resists stretching and wear under heavy load
• Precise length and width match OEM specifications for 78-1366
• Designed for the Thermo King MD-200 engine to compressor drive system
• Heat and oil resistant material for extended service life
• Flexible design accommodates pulley alignment and tension variations

Fits These Machines

• for Thermo King MD-200
• for Thermo King TK 3.74 Engine

On-The-Job Use

• Replaces worn or broken belt in reefer unit engine compartments
• Maintains compressor drive in refrigerated truck and trailer systems
• Used during routine maintenance or compressor replacement on MD-200 units

Specs At A Glance

Good To Know

Q: How do I know this belt fits my Thermo King MD-200? A: Confirm your unit's model and engine type match MD-200 and TK 3.74, and verify the part number 78-1366 against your existing belt. Fit can depend on the serial number of your unit.

Q: What happens if the belt is worn? A: A worn belt can slip or break, stopping the compressor and causing temperature loss in the reefer unit. Replace it promptly to maintain cooling performance.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.