6735-61-1501 Water Pump for Komatsu PC200-6 PC200-7 PC220-7 6D102

6735-61-1501 Water Pump for Komatsu 4D102 and 6D102 Engine

The 6735-61-1501 water pump is supplied for Komatsu 4D102 and 6D102 engine cooling system repair. It is commonly searched as 6735-61-1501, 6735611501, 6735-61-1500, 6735611500, engine water pump, cooling water pump or water pump assembly for Komatsu excavator engine repair.

This water pump helps circulate coolant through the engine cooling circuit to support stable engine temperature during machine operation. Final fitment should be confirmed by the old pump number, engine model, pulley area, mounting holes, gasket profile, inlet and outlet direction before ordering.

Engine and Machine Reference

Common engine references for this water pump include Komatsu 4D102 and 6D102. Common machine references include Komatsu PC200-6, PC200-7, PC220-7, PC270-7, PC120-6, PC130-6, PC210-6, PC75US-3 and PC100-6 excavators.

Machine model alone is not enough for final confirmation. Water pumps may vary by engine version, pulley design, gasket shape, housing profile, inlet and outlet layout, and mounting structure. The removed pump and engine nameplate are more reliable than the model name alone.

For accurate ordering, please compare the old water pump with the replacement unit before shipment. Photos of the old pump front side, rear side, pulley area, gasket surface, inlet outlet positions, engine nameplate and machine nameplate are useful for confirmation.

Part Number and Reference Notes

6735-61-1501 is the main part number of this product page. It should stay visible in the SEO Title, H1, top parameters, first paragraph, product body and image ALT text.

6735611501 is the no-hyphen writing format of 6735-61-1501. 6735-61-1500 and 6735611500 can be used as important reference numbers for checking. The old pump shape, gasket surface, pulley area and engine model should still be verified before ordering.

Do not mix nearby Komatsu water pump numbers into this page unless interchange is confirmed by the old pump number and physical structure. Similar engine water pumps may have different pulley layouts, housing shapes, gasket profiles or mounting positions.

How to Confirm the Correct Water Pump

Water pumps can look similar in product photos, but small differences in mounting holes, gasket shape, pulley position, water inlet direction and water outlet direction may affect installation. Please compare the removed pump before ordering.

• Confirm whether the old pump number is 6735-61-1501, 6735611501, 6735-61-1500 or 6735611500.

• Check whether the engine is Komatsu 4D102 or 6D102.

• Compare the pulley area, mounting holes and gasket profile.

• Check the water inlet, water outlet and housing shape.

• Confirm the machine model and serial number when possible.

• Send photos of the old pump front side, rear side, gasket surface, pulley side and engine nameplate before quotation if you are not sure.

Common Water Pump Failure Symptoms

A water pump may need replacement when the engine has overheating, coolant leakage near the pump, bearing noise, shaft play, poor coolant circulation, repeated temperature warning, coolant loss after repair or leakage from the pump seal area.

Before replacing the pump, check the radiator, thermostat, fan belt, hose condition, coolant quality and engine cooling passage. Some overheating problems may be caused by blocked radiator cores, air in the cooling system, belt slip or thermostat failure rather than the pump itself.

If the old pump failed because of poor coolant quality, rust, belt overload, bearing wear or incorrect gasket installation, the root cause should be corrected before installing the replacement water pump. Otherwise, the new pump may leak or fail again.

Installation and Testing Notes

Before installation, drain the coolant and clean the mounting surface. Old gasket residue, rust, uneven surfaces or debris can cause leakage after assembly.

Use the correct gasket and tighten bolts evenly according to the repair procedure. Do not use excessive sealant that may enter the cooling passage.

After installation, refill coolant, remove air from the system, check for leakage, monitor operating temperature and recheck coolant level after the first running period.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this 6735-61-1501 / 6735-61-1500 water pump is suitable for Komatsu 4D102 and 6D102 cooling system repair when the old pump is leaking, noisy, worn or unable to circulate coolant properly.

For parts distributors, it can be supplied as a Komatsu 4D102 / 6D102 engine water pump reference for PC200-6, PC200-7, PC220-7, PC270-7, PC120-6, PC130-6, PC210-6, PC75US-3 and PC100-6 repair demand. Topvelsun supports small repair orders and bulk inquiries. Please send the required quantity, old pump number, engine model, machine model and old pump photos before quotation.

FAQ

What is the main product on this page?

This page is for the 6735-61-1501 / 6735-61-1500 engine water pump used for Komatsu 4D102 and 6D102 engine cooling system repair.

Is 6735611501 the same search reference as 6735-61-1501?

6735611501 is the no-hyphen writing format of 6735-61-1501. Buyers may search either format, so both formats can be kept on the page.

Can 6735-61-1500 be used as a reference number?

Yes. 6735-61-1500 can be used as an important reference number for checking. The old pump shape, gasket surface, pulley area and engine model should still be verified before ordering.

Which engines are the main applications?

The main engine references are Komatsu 4D102 and 6D102. Please also confirm the old pump number and physical pump structure before ordering.

Which Komatsu models are common references?

Common references include Komatsu PC200-6, PC200-7, PC220-7, PC270-7, PC120-6, PC130-6, PC210-6, PC75US-3 and PC100-6.

Can this water pump fit Komatsu PC200-8?

PC200-8 should not be used as the main compatibility claim for this page unless the old pump number and engine arrangement confirm it. This page should focus on Komatsu 4D102 and 6D102 engine references such as PC200-6, PC200-7, PC220-7 and related models.

What should I send before ordering?

Please send photos of the old pump number, front side, rear side, pulley area, gasket surface, water inlet, water outlet, engine nameplate and machine nameplate. These photos help confirm whether 6735-61-1501 is the correct water pump.