Parts for your 2017 Haval H6-Head gasket

2017 Haval H6 head gasket — what it is, what it does, and when to sort it

Yes, the 2017 Haval H6 uses a head gasket. Technical references such as the Haval/Great Wall Motors workshop manual for the GW4G15B (1.5T) and GW4C20 (2.0T) engines, plus OEM parts catalogues and exploded engine diagrams, list a multi‑layer steel (MLS) cylinder head gasket between the alloy head and the block. Aftermarket parts catalogues for these engines also supply MLS head gaskets, which further confirms fitment.

On the 2017 H6, the head gasket is the crucial seal that keeps three systems in their own lanes: combustion pressure in the cylinders, coolant flowing through galleries, and engine oil moving around lifters and cam journals. A good seal maintains compression for power and efficiency, prevents coolant or oil from sneaking into the wrong place, and helps the engine run cool and happy on long Kiwi and Aussie kilometres.

There’s no routine “replace by X km” for a head gasket. Instead, its life mainly depends on cooling system health and whether the engine has ever overheated. During regular servicing, it’s smart to:

• Refresh coolant at the logbook interval using the correct long‑life spec and proper mix.
• Check for leaks, old hoses, lazy radiator caps, and make sure fans, thermostat and water pump are doing their job.
• Listen for misfires on cold start and watch for white exhaust vapour after warm‑up.

Early warning signs of trouble include unexplained coolant loss, bubbling in the expansion tank, overheating under load, milky residue under the oil cap, sweet smells from the exhaust, or a hard upper radiator hose soon after a cold start. If any of that pops up, a cooling‑system pressure test, combustion leak (block) test, and compression/leak‑down checks are worthwhile.

If a gasket has failed, replacement is a proper workshop job. The cylinder head needs to come off, be measured for warpage, and often lightly skimmed. Always fit a quality MLS gasket, replace the torque‑to‑yield head bolts, renew coolant and oil, and set timing correctly (these engines use a chain—inspect guides and the tensioner while you’re there). It’s also sensible to sort the root cause—clogged radiator, dodgy thermostat, or an ageing water pump—so the fresh gasket isn’t asked to do the impossible.

Referenced sources: Haval/Great Wall Motors H6 workshop manual (2017, GW4G15B and GW4C20), Haval OEM parts catalogues, and reputable aftermarket MLS gasket listings for these engines.

Popular questions about 2017 Haval H6 head gaskets

Does the 2017 Haval H6 actually have a head gasket?
Yes. Both the 1.5‑litre turbo (GW4G15B) and 2.0‑litre turbo (GW4C20) petrol engines use an MLS head gasket. It sits between the cylinder head and the block to keep compression, oil and coolant separate.

What symptoms point to a blown head gasket on a 2017 H6?
Common red flags are overheating, pressurised cooling system from cold, white exhaust vapour after warm‑up, chocolate‑milk sludge under the oil cap, and unexplained coolant loss. A chemical block test and compression/leak‑down testing can confirm it before any big repairs are booked.

Should the head gasket be replaced as routine maintenance?
No. It’s not a scheduled service item. Focus on cooling‑system care—fresh coolant to spec, leak checks, and a healthy radiator cap, thermostat and fans. Preventing overheating is the best way to extend gasket life on the H6.