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SKU:
ZZ3F02150
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160°F 71℃ Thermostat w/ O-Ring 16221-73270 Fits for Kubota ZD25 ZD28 ZD331 ZD326
$41.79
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
160°F 71℃ Thermostat for Kubota ZD25 ZD28 ZD331 ZD326
This 160°F 71℃ thermostat for Kubota ZD25, ZD28, ZD331, and ZD326 models includes the O-ring and serves as the direct replacement for OEM part number 16221-73270, regulating engine coolant temperature for consistent operation.
Overview
This 160°F 71℃ thermostat with O-ring for Kubota ZD25, ZD28, ZD331, and ZD326 maintains proper engine operating temperature by opening and closing to control coolant flow. It is a direct-fit replacement for the 16221-73270 thermostat, ensuring your mower engine warms up quickly and stays within the optimal range. This thermostat for Kubota ZD-series machines is designed to help prevent overheating and inefficient combustion.
Built For Performance
- Opening temperature rated at 160°F (71°C) for accurate thermal regulation
- Includes the required O-ring for a secure, leak-resistant seal
- Directly replaces OEM part number 16221-73270
- Constructed with heat-resistant materials for long service life
- Ensures consistent coolant flow for reliable engine temperature control
Fits These Machines
- for Kubota ZD25
- for Kubota ZD28
- for Kubota ZD331
- for Kubota ZD326
On-The-Job Use
- Ideal for replacement during routine engine cooling system maintenance
- Suitable for zero-turn mowers used in commercial landscaping and turf care
- Helps maintain proper warm-up in cold-weather starting conditions
- Used when engine temperature runs low or overheating issues are observed
Specs At A Glance
| Thermostat Type | Wax-pellet type |
| Opening Temperature | 160°F (71°C) |
| Part Number(s) | 16221-73270 |
| Included | Thermostat with O-ring |
Good To Know
Q: Why does my Kubota ZD need a 160°F thermostat? A: A 160°F thermostat opens at a lower temperature than standard units, which can help prevent engine overheating in high-output or continuous-use applications while still allowing the engine to reach efficient operating temperatures.
Q: Can I reuse the old O-ring when replacing this thermostat? A: No, it is recommended to use the included new O-ring to ensure a proper seal and prevent coolant leaks after installation.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.