XZR8®
Kubota 2500870 Thermostat Assembly
Kubota 2500870 Thermostat Assembly - Image 2
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Kubota 2500870 Thermostat Assembly

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Component NameThermostat Assembly with Cover and Gasket
Coolant TypeWater / Antifreeze Mixture
Mounting StyleFlange Mount with Water Outlet
Include ContentThermostat Element, Cover, Water Flange, Gasket
Net Weight0.85 kg
Package Dimensions12 × 9 × 7 cm

Manufacturer No.

  • 2500870
  • 554086
  • 2810945
  • 5001956
  • 554082
  • 4145869

OEM Part No.

  • 1E399-73010

Engine Part No.

  • Kubota Z482
  • Kubota Z482-E4B
  • Kubota Z482-E4B-TXRN-1
  • Kubota D662
  • Kubota D662-EB
  • Kubota D722
  • Kubota D722-EB
  • Kubota D722-E3B
  • Kubota D722-E3B-TXRN-1
  • Kubota D722-E3B-TXRN-3
  • Kubota D722-E3B-TXRN-4
  • Kubota D722-E3B-RNUK-3

Interchange No.

  • 5001956
  • 554082
  • 554086
  • 4145869
  • 2810945

Fitment Vehicles

  • Jacobsen Eclipse 322
  • Jacobsen Greens King VI
  • Jacobsen Greens King V
  • Jacobsen Greens King IV Plus
Thermostat assembly 2500870 regulates engine coolant temperature for Kubota Z482, D662, and D722 series diesel engines. The assembly includes thermostat element, cover (554086 or 2810945), water flange (5001956 or 554082), and gasket (4145869). Designed for liquid-cooled industrial engines operating in turf maintenance equipment. Direct replacement for Kubota OEM 1E399-73010. Compatible with Jacobsen Riding Greens Mower Eclipse 322 and Greens King VI, V, IV Plus models. Engineered to maintain optimal operating temperature range for reliable cold-start performance and overheating prevention in continuous-duty applications.

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