null
CALL or TEXT (800) 909-7060

Kubota Excavator Radiator

ⓘ Click headers to sort ↕
Kubota Excavator Radiator parts list
Image Fits Model Description Part # Price Product Details
Radiator Cap (13 lb) for Kubota Compact Tractor L3600, L4200, L2550, L2850, L245, & more See Details KH36, KX101, KX121-2, KX151, KH007H, KH170L, KH191, KH28L, KH41, KH91H, KX161-2, KX41-2, KX41H, KX61-2, F2000, F2100, G1800, G1900, G2000, G3200, G4200, G4200H, G5200, G5200H, G6200, G6200H, B1550, B1750, B20, B2150, B4200, B5100, B5200, B6100, B6200 Radiator Cap (13 lb) 15272-72020
$12.00
View Info
Lower Radiator Heater Hose (1-1/2 in) for Kubota Compact Tractor L305, L345, L355, & more See Details KH101, KH151, KH191, KH28, L305, L3350, L345, L355, L4150, L4350, L4850, L5450, M4050, M4500, M5030, R400, R410 Lower Radiator Heater Hose (1-1/2 in) 70000-82500
$76.00
View Info
Thermostat (V2003-M) for Kubota Compact Excavator KX161-3 See Details KX161-3, KX121-3, KX121-3S, L2800DT/HST, L3130DT/GST/HST, L3130F, L3200DT, L3200H, L3240DT-3, L3240DT/GST, L3240GST-3, L3240HST, L3240HST-3, L3240HSTC, L3240HSTC-3, L3400DT/HST, L3430DT/GST/HST(C), L3540GST, L3540GST-3, L3540HST, L3540HST-3 Thermostat (V2003-M) 1A021-73012
$15.00
View Info
Radiator for Kubota KX161-3, KX121-3, U45-3, U50-3 Excavator – RD411-42300 See Details KX121-3, KX161-3, U45-3, U50-3 Radiator RD411-42300
From $1,575.00
View Info
Radiator for Kubota KX040-4, KX057-4, U55-4 Excavator – RD568-42300 See Details KX040-4, KX057-4, U55-4 Radiator RD568-42300
From $1,251.00
View Info
See Details KX161-3S, KX161-3ST, U45S, U45ST Radiator RD538-42300
$1,141.00
View Info
See Details KX033-4, U35-4 Radiator RC788-42300
$735.00
View Info
Radiator Cap for Kubota Equipment, 17214-72020 See Details RTV1100CR, RTV1100CRX, RTV1100CR9, RTV1100CW, RTV1100CWX, RTV1100CW9, RTV1140CPX, RTV1140CPXR, RTV500, RTV1100CR, RTV1100CRX, RTV1100CR9, RTV1100CW, RTV1100CWX, RTV1100CW9, RTV1140CPX, RTV1140CPXR, RTV500 ETC Radiator Cap 17214-72020
$45.00
View Info

Radiators and radiator caps for Kubota mini excavators, covering direct-fit replacement cooling components for compact excavator models including the KX033-4, KX161-3S, U35-4, U45S, and U45ST series machines.

Fits Models At A Glance

  • KX Series: KX033-4, KX161-3S, KX161-3ST
  • U Series: U35-4, U45S, U45ST

Key Notes

  • Application: Replacement radiators designed for compact excavator cooling systems in demanding dig and lift cycles
  • Radiator Cap: Pressure-rated cap compatible with Kubota mini excavator cooling systems
  • Part Verification: Confirm model number and serial range before ordering to ensure correct radiator fitment
  • Condition: New replacement radiator assemblies available for listed models

Why Choose Broken Tractor

  • ✅ Accurate fitment data for Kubota compact excavators
  • ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH
  • ✅ Knowledgeable staff ready to verify your part

Frequently Asked Questions

What radiator fits a Kubota mini digger?

The correct radiator depends on your Kubota mini excavator model. Broken Tractor carries RC788-42300 for the KX033-4 and U35-4, RD538-42300 for the KX161-3S, KX161-3ST, U45S and U45ST, RD568-42300 for the KX040-4, KX057-4 and U55-4, and RD411-42300 for the KX121-3, KX161-3, U45-3 and U50-3. Match the part number on your old radiator, and confirm your model and serial range before ordering.

Does the Kubota KX161-3 radiator fit a KX161-3S?

No, the KX161-3 and KX161-3S use different radiators. The KX161-3 uses RD411-42300, the same radiator as the KX121-3, U45-3 and U50-3. The KX161-3S and KX161-3ST use RD538-42300, which also fits the U45S and U45ST. If you are not sure which version you have, check the model plate and serial number or call (800) 909-7060 so our parts team can verify the fit.

What Kubota mini excavator cooling system spare parts do you carry besides radiators?

Along with radiators, we carry radiator caps, a thermostat and a lower radiator hose for Kubota mini excavators. The thermostat, SKU 1A021-73012, fits the KX121-3, KX121-3S and KX161-3. The one and a half inch lower radiator hose, SKU 70000-82500, fits the KH101, KH151, KH191 and KH28.

Which radiator cap fits a Kubota mini excavator?

For many older Kubota mini excavators, the 13 lb radiator cap, SKU 15272-72020, is the listed fit. It covers models including the KX41-2, KX41H, KX61-2, KX101, KX121-2, KX151 and KX161-2, as well as KH series machines such as the KH28L, KH36, KH41 and KH191. Compare the part number on your current cap to make sure you get the right one.

Are your Kubota mini excavator radiators new or used?

The radiators Broken Tractor carries for Kubota mini excavators are new replacement assemblies, not used parts. Each one is built as a direct-fit replacement for the listed models, such as the KX033-4, U35-4, KX161-3S and U45S. Confirm your model number and serial range before ordering to make sure you get the correct radiator.

Privacy Policy | Terms & Conditions

Building Quality Since 2006  |  Copyright © 2026 Broken Tractor LLC - All Rights Reserved


Product: Category: Kubota Excavator Radiator Brand: Head Title: Kubota Mini Excavator Radiators | Broken Tractor