Parts for your 2019 Haval H6-Manifold gasket

2019 Haval H6 manifold gasket — what it is and how to look after it

Yes, the 2019 Haval H6 uses manifold gaskets. Technical sources that cover this include the Haval/GWM workshop manuals for the GW4C20B and GW4B15 turbo-petrol engines (sections covering “Intake Manifold” and “Exhaust Manifold & Turbocharger”), which specify manifold-to-head gaskets and their torque procedures, and the Haval electronic parts catalogue (EPC) diagrams for 2017–2020 H6 models, which list dedicated intake and exhaust manifold gaskets and associated fasteners. These manufacturer documents instruct replacing the gaskets whenever the manifolds are removed and detail the tightening sequence and torque for reassembly.

For owners and workshops, the manifold gasket on a 2019 Haval H6 quietly does a big job. There are two main types on this model: an intake manifold gasket that seals the air path into the head, and an exhaust manifold gasket that seals hot gases as they leave the head and feed the turbo. On a turbo H6, airtight and gas-tight sealing is critical for smooth idle, proper fuel trims, strong boost, and keeping exhaust noise and fumes out of the engine bay.

There’s no set service interval for these gaskets, they’re a fit-for-life part unless disturbed or leaking. During routine services, it’s smart to listen for a light hissing (intake) or a ticking sound that’s louder on cold start (exhaust), sniff for exhaust odour under the bonnet, and look for black soot marks around the exhaust manifold flange. A small leak can cause rough idle, sluggish spool, higher fuel use, or the ECU chasing trims.

If a manifold has to come off—for plugs on some engines, carbon cleaning, turbo work, or coolant hose access—plan to fit new gaskets. Clean both mating faces carefully, check for warped surfaces with a straightedge, and never scrape so hard you gouge alloy. Install the correct new gasket (intake gaskets are usually composite or rubberised, exhaust gaskets are commonly multi-layer steel), align the dowels, and torque the fasteners in the manufacturer’s sequence. Don’t add sealant unless the manual explicitly calls for it. On the exhaust side, it’s good practice to replace heat-cycled nuts, studs, and any crush rings on turbo joints. After the job, run the engine from cold and re-check for any tell-tale sounds or smells.

With those basics covered, the H6’s manifold gaskets should remain drama-free for many kilometres, keeping the turbo happy and the engine breathing exactly as it should.

• Typical signs of trouble: hissing or ticking noises, soot traces, exhaust smell under the bonnet, rough idle, lazy boost.
• Best practice: always replace gaskets when manifolds are removed, follow torque specs and sequence, avoid sealants unless specified.

Technical references: Haval/GWM H6 Workshop Manual (GW4C20B/GW4B15 engines), sections “Intake Manifold” and “Exhaust Manifold & Turbocharger”, Haval/GWM Electronic Parts Catalogue (EPC) 2017–2020 H6, Engine section exploded diagrams listing intake and exhaust manifold gaskets.

FAQs

Does the 2019 Haval H6 actually have intake and exhaust manifold gaskets?
Yes. Both are specified in Haval/GWM workshop procedures and shown in the official parts catalogue for the 2019 H6. The manuals also advise renewing these gaskets whenever the manifolds are removed, along with using the correct tightening sequence and torque.

What are common signs the manifold gasket is leaking on a 2019 H6?
Owners often notice a ticking noise that’s louder on cold start (exhaust side), a faint exhaust smell under the bonnet, black soot near the manifold flange, or a hissing sound (intake side). There can also be rough idle, sluggish turbo response, or increased fuel use as the ECU compensates.

Should sealant be used on H6 manifold gaskets?
Generally, no. These gaskets are designed to seal dry when installed on clean, flat faces with the correct torque and sequence. Only use a manufacturer-specified non-hardening sealant where the workshop manual explicitly calls for it.