Tube, Coolant (A034X420 OEM) is a heavy-duty Coolant Hose / Water Transfer Pipe for the engine cooling circuit.
Connects the radiator, water pump, and thermostat housing to circulate hot coolant efficiently, keeping the Cummins engine at its optimal operating temperature without overheating.
Compatible with Cummins engine series: Cummins NT855, NTA855, QSB, QSC, QSX, KTA. To prevent premature wear and ensure optimal engine lifespan, genuine replacement parts are strongly recommended.
Send a photo of your engine nameplate or serial number. Our engineers will verify compatibility in 5 minutes!
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