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Kubota 1E399-73010 Thermostat Assembly
Kubota 1E399-73010 Thermostat Assembly - Image 2
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Kubota 1E399-73010 Thermostat Assembly


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Opening Temperature71°C
Outer Diameter38 mm
Actuation TypeWax Pellet
ApplicationsEngine Coolant Temperature Regulation
Gasket Included16851-73270
Net Weight0.3 kg
Package Dimensions15 × 10 × 8 cm

Manufacturer No.

  • 1E399-73010
  • 1E399-73012
  • 1E39973010
  • 1E39973012

OEM Part No.

  • 1E399-73010
  • 1E399-73012
  • 16851-73270
  • 19203-73014

Engine Part No.

  • Kubota D722
  • Kubota D902
  • Kubota Z482
  • Kubota D722-E3B
  • Kubota D722-E4B
  • Kubota D902-E3B
  • Kubota D902-E4B
  • Kubota Z482-E3B
  • Kubota Z482-E4B
  • Kubota Z602-E3B
  • Kubota Z602-E4B
  • Kubota D662
  • Kubota D750
  • Kubota D850
  • Kubota D950
  • Kubota V1100
  • Kubota V1200
  • Kubota Z402
  • Kubota Z600
  • Kubota Z602

Interchange No.

  • KB-1E399-73010
  • KB1E39973010
  • SS
  • 19203-73014

Fitment Vehicles

  • Kubota GL11000 Generator
  • Kubota RTV500-A/H
  • Kubota RTV500R-A/H
  • Kubota RTV520
  • Kubota RTV520E
  • Kubota G2000
  • Kubota G2000-S
  • Kubota G Series Lawn Tractors
  • Kubota GR Series Lawn Tractors
  • Kubota T Series Lawn Tractors
  • Kubota TG Series Lawn Tractors
The Kubota 1E399-73010 thermostat assembly regulates engine coolant temperature at 71°C opening point. Designed for Kubota SM series and Super Mini series diesel engines including D722, D902, Z482, D722-E3B, D722-E4B, D902-E3B, D902-E4B, Z482-E3B, Z482-E4B, Z602-E3B, Z602-E4B, D662, D750, D850, D950, V1100, V1200, Z402, Z600, Z602. This thermostat features 38mm outer diameter construction with wax pellet actuation for precise temperature control. Supersedes part number 1E399-73012. Commonly supplied with water flange gasket 16851-73270. Used in Kubota GL11000 diesel generators, RTV500/RTV520 series utility vehicles, G2000/G2000-S garden tractors, and various compact equipment applications.