Multiquip 68900143SRF Lower Radiator Hose - OEM Replacement Part

This lower radiator hose maintains critical coolant flow between the engine block and radiator in Multiquip ride-on trowels equipped with 4TNV84TDSA and 3TNV series engines. The lower hose returns cooled fluid from the radiator back to the engine, completing the cooling circuit that prevents overheating during extended finishing operations.

In STX-Series trowels, the cooling system works in conjunction with the overflow bottle located behind the grill guard to maintain proper coolant levels during operation. A failing lower radiator hose can cause coolant leaks, reduced cooling efficiency, and potential engine overheating—particularly critical during high-demand troweling operations where engines run at sustained loads. Common failure symptoms include visible coolant puddles beneath the machine, steam from the engine compartment, or rising temperature readings on the operator gauges.

This hose is specifically engineered for compatibility with Yanmar 4TNV84TDSA and 3TNV diesel engines used in Multiquip trowel applications, ensuring proper fit, pressure rating, and heat resistance for reliable long-term performance.

Compatible Models:

• STX55J6

Genuine Multiquip OEM part, sold by an authorized dealer.