Parts for your 2020 Haval H6-Head gasket

2020 Haval H6 Head Gasket — What It Does and When to Replace

Yes, the 2020 Haval H6 uses a cylinder head gasket. Technical references that confirm this include the GWM/Haval H6 workshop manual for the second-generation H6 (covering the 1.5T GW4G15B and 2.0T GW4C20B petrol engines), which details the cylinder head removal/installation, head-bolt torque‑angle sequence and the multi-layer steel (MLS) head gasket. The GWM Electronic Parts Catalogue (EPC) for the same engines also lists the head gasket as a service part, alongside replacement head bolts. These sources make it clear the H6’s turbo four-cylinder uses an MLS head gasket between the alloy block and cylinder head.

In this H6, the head gasket seals three critical areas under the bonnet: it keeps combustion pressure inside the cylinders, keeps coolant flowing through its own passages, and keeps engine oil in its galleries. On a boosted petrol like the H6, the gasket has to juggle high cylinder pressures and temperature swings, so the factory uses an MLS design for strength and stability.

This isn’t a regular service item, it should last the life of the engine if the cooling system’s kept happy. When things go pear-shaped, common clues include unexplained coolant loss, overheating, white steam from the exhaust, bubbles in the expansion tank, a sweet smell, milky residue under the oil cap, or a rough cold start. The usual culprits are overheating, incorrect coolant, detonation from poor fuel or tuning, or a warped cylinder head after a big heat event.

If replacement is on the cards, it’s a decent job best left to a workshop with the right gear. Smart practice includes:

• Pressure test and check the head for flatness, machine only if the manual allows and it’s out of spec.
• Always fit new head bolts (these are torque-to-yield) and follow the exact torque-angle sequence from the Haval manual.
• Clean threads, use locating dowels, and keep mating surfaces spotless—no sealant on an MLS unless the manual specifies.
• Replace intake/exhaust gaskets, thermostat housing seals, and consider the water pump while you’re there.
• Change oil and filter after the job, flush and bleed the cooling system, and refill with the correct long‑life OAT coolant to GWM spec.

To help the gasket live a long, drama-free life: keep an eye on coolant level and colour, stick to the recommended coolant and change intervals, make sure radiator fans and the thermostat are behaving, and don’t ignore early overheating. After a hard run, let the turbo and temps settle before shut-down. Use quality 95/98 RON petrol as recommended, and keep the factory tune—extra boost without proper calibration can push a gasket over the edge.

Popular questions about the 2020 Haval H6 head gasket

Does the 2020 Haval H6 have a head gasket and what type is it?
It does. The 2020 H6 petrol engines (1.5T and 2.0T) use a multi-layer steel (MLS) head gasket between the alloy block and cylinder head. This design handles the higher cylinder pressures and thermal cycles common to turbocharged engines while keeping combustion, coolant and oil where they belong.

How much does a head gasket replacement cost in Australia or New Zealand?
Costs vary with engine, workshop rates and whether the head needs machining. As a ballpark, expect around 10–16 hours labour. Total invoices commonly land in the AUD/NZD 2,000–4,500 range, with genuine parts and machining at the higher end. A proper quote should include new head bolts, gasket set, fluids, machining (if needed) and diagnostics.

Is it safe to drive a 2020 H6 with a suspected blown head gasket?
Best not. Driving on with overheating, coolant loss or misfires can warp the head, damage the turbo or catalyst, and escalate repair costs. Get it checked with a cooling system pressure test, combustion leak “block test”, and compression/leak-down tests. If temps spike, stop, let it cool, and organise a tow.