What is the first check for this task?

Record manufacturer, full machine model and serial number. This first check matters because the rest of the workflow assumes the correct item, information and starting condition.

What result should be written down?

Record the result of “Keep the old unit until the new pump has passed post-install checks.” together with the exact item or batch, relevant settings and any photograph or measurement that another person would need to repeat the decision.

How do I confirm 8972541481 before ordering?

Yes, when the old pump is stamped 8972541481 or 8-94140341-0 on an Isuzu 4LE1. Hitachi ZX55, ZX55UR, E55 and EX55 machines that run that engine and number take this aluminium pump.

What is an immediate stop signal?

Searching by excavator nickname only. is one avoidable failure. Also stop whenever a wrong cooling-system part or poor installation can cause overheating and engine damage. Verify the engine plate, machine serial, old casting/part number and service information; installation and coolant handling should be performed by a competent person.

8972541481 Water Pump Compatibility Checklist

Treat 8972541481 as the stamp on the old pump. This WaterInpos unit is an aluminium Isuzu 4LE1 coolant pump in that number family, with 8-94140341-0 as the interchange and a housing gasket plus round seal in the box.

Four checks before you order

Engine plate says Isuzu 4LE1.
Old pump is stamped 8972541481 or 8-94140341-0.
Pulley hub has four fixing holes and the hose necks match the 4LE1 layout.
You are planning to reuse the original mounting bolts unless the machine maker says otherwise.

Machines that often take this number

Hitachi ZX55, ZX55UR, E55 and EX55 fleets in the UK commonly run this 4LE1 pump. If the stamp disagrees, walk away from the listing and get a documented cross-reference. Do not grind the housing to make it sit.

What arrives

One CW 8972541481 water pump, one housing gasket, one smaller round seal. Pack size on this listing is 27 × 16 × 17 cm. Fit on a cold engine and torque the pump-to-block bolts to 1.9–2.9 kg·m (14–21 lbf·ft).

See the Isuzu 4LE1 Water Pump 8972541481 for the aluminium housing, packing size and the gasket set in the box.