Thermo King 77-2509 Drive Coupling Assembly

The Thermo King 77-2509 is a genuine OEM drive coupling designed for the compressor drive system on Thermo King SB series transport refrigeration units. It features a large diameter shaft interface with a 6-bushing (6-pin) flexible element to accommodate misalignment and dampen vibration between the engine and compressor. This coupling assembly includes the bolt and spacer hardware for direct installation. It is constructed from high-strength steel alloy for durability in continuous heavy-duty cycling conditions typical of transport refrigeration applications. The 2.2 inch diameter interface matches the standard large shaft specification for SB platform units.