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12_b11434b7-1565-4f32-a125-d5d447cb7601 - Northline Parts

Water Pump 16251-73032 for Kubota ZD25 ZD25F ZD28 ZD28F ZD326 ZD331 Mowers

SKU: NLT2T05217
$94.69 In Stock
$94.69
Sale price  $94.69 Regular price 
Ships for free in 2–4 business days.
This engine water pump replaces Kubota 16251-73032 on compatible ZD-series diesel zero-turn mowers.
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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
Kubota ZD-Series ZD25, ZD25F, ZD28, ZD28F
Kubota ZD-Series ZD326, ZD331, ZD331LP, ZD331P, ZD331RP

Product Overview

The pump circulates coolant through the diesel engine and radiator during long mowing cycles. A failing seal or bearing can lead to visible coolant loss, wobble/noise at the pump or overheating under sustained load.

16251-73032 is used across several ZD25/ZD28/ZD326/ZD331 variants. Match the original pump, impeller option and machine serial information before installation.

Key Features & Performance

  • Kubota reference 16251-73032
  • Restores coolant circulation
  • Fits multiple diesel ZD-Series zero-turn mowers
  • Useful replacement for leaking, noisy or worn pump assemblies

Replaces Part Numbers

  • 16251-73032

Technical Specifications

  • Component: Engine water pump
  • System: Cooling

Frequently Asked Questions

Q: Why does the impeller option matter?
A: Water-pump configuration can vary by machine serial range; compare the original pump and machine serial information.

Q: What should be serviced with the pump?
A: Inspect the belt, hoses, thermostat, coolant condition and radiator so the entire cooling system is ready for service.

Fitment can vary by serial number, production date, engine configuration or prior repairs. Verify compatibility using the part numbers and application details listed above before ordering.

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