Parts for your 2018 Haval H6-Water pump

2018 Haval H6 water pump: what it does and when to service it

Yes, the 2018 Haval H6 is fitted with a water pump. Haval/Great Wall workshop literature for the 2017–2018 H6 cooling system and dealer electronic parts catalogues list a serviceable water pump assembly and gasket for the GW4G15B 1.5T and GW4C20B 2.0T petrol engines. Major aftermarket catalogues for these engines also carry direct-fit replacement pumps, confirming the part’s relevance on this model.

The H6’s water pump is a mechanical, belt-driven unit that keeps coolant moving through the block, cylinder head, turbocharger’s water jacket (on turbo variants), heater core and radiator. By circulating coolant continuously, it evens out hot spots, stabilises operating temperature and helps the engine run efficiently. It also feeds the heater, so a healthy pump helps deliver warm air on cold mornings across Aotearoa and Australia.

As part of routine servicing, the pump itself doesn’t have a fixed replacement interval on these engines. Instead, it’s a “replace on condition” item. The service focus is on using the correct long-life OAT coolant specified by Haval/Great Wall, keeping the coolant fresh (typically around 5 years/100,000 km—check the owner’s handbook), and inspecting the drive belt, pulleys and the pump for tell-tales. Any time the cooling system is opened, proper bleeding to remove air is essential, otherwise the pump can end up cavitating and the engine may overheat.

What to look for during a service:

• Crusty residue or pink/green staining at the pump’s weep hole or gasket area
• Coolant smell after a drive, or a slow coolant drop with no obvious hose leak
• Growling, chirping or wobble at the pump pulley, play indicates worn bearings
• Temperature creeping up in traffic, poor cabin heat at idle, or heater going cold then hot

If the pump is leaking or noisy, replacement is the go. It’s smart to fit a quality pump, a fresh gasket/O-ring, and new coolant, and to check the accessory belt and tensioner while the front end is apart. Bolts should be tightened evenly to the workshop-manual specs, surfaces cleaned, and the system pressure-tested afterwards. Owners who tow, drive long distances in summer heat, or sit in urban congestion will benefit from sticking to coolant change schedules and having the cooling system pressure-checked during regular services. That bit of preventative attention keeps the H6 happy, avoids overheating dramas, and protects the turbo and head gasket for the long haul.

Popular questions

Does a 2018 Haval H6 have a water pump?
Yes. Workshop manuals and parts catalogues for the GW4G15B 1.5T and GW4C20B 2.0T engines show a belt-driven water pump as part of the cooling system on the 2018 H6.

When should the water pump be replaced on a 2018 H6?
There’s no set kilometre interval. It’s replaced if it leaks, makes noise, or shows pulley play. Inspect it at each service, refresh the correct OAT coolant on schedule, and replace the drive belt if worn.

Is the H6 water pump tied to a timing belt service?
The 2018 H6 petrol engines use a timing chain, and the water pump is driven by the accessory belt. It isn’t tied to a timing-belt change, so it’s handled on condition rather than with a belt kit.