Kubota 3C581-72130 Heater Core – M-Series Tractors

Your Kubota M-Series tractor’s cab heat isn’t working — or you’ve got a coolant leak traced to the heater core. This direct-fit aftermarket heater core replaces OEM part 3C581-72130 and covers a wide range of current M-Series models, restoring reliable cabin heat and proper coolant flow.

OEM Reference: 3C581-72130

Fits:

• Kubota M100, M110, M110GXDTC, M126, M135
• Kubota M4-071
• Kubota M5-091, M5-111, M5040, M5140
• Kubota M6-101, M6-111, M6-131, M6-141, M6040, M6060
• Kubota M7-131, M7-151, M7-171, M7040, M7060
• Kubota M8540, M8560
• Kubota M9540

Why replace it?

• No heat or reduced heat output from cab vents
• Coolant leak inside the cab or from the heater core housing
• Sweet smell inside the cab (coolant leak indicator)
• Foggy or film-coated cab windows (coolant vapor from a leaking core)

Specifications:

• Core Length: 8"
• Core Height: 5"
• Core Width: 3/4"
• Overall Length: 9 3/8"
• Overall Height: 7 1/2"
• Overall Width: 8"
• Fitting Inlet: 1/2"
• Fitting Outlet: 1/2"

Direct fit. Fast shipping from Ram Parts USA.