Parts for your 2017 Haval H6-Ignition leads

2017 Haval H6 ignition-leads: are they fitted, and what should owners know?

For the 2017 Haval H6, traditional ignition leads (high-tension spark plug leads) aren’t used. This model runs a modern coil-on-plug (COP) ignition system, where an individual ignition coil sits directly on top of each spark plug under the bonnet. That setup removes the need for separate leads running from a coil or distributor to the plugs.

This isn’t just a Haval quirk—it’s how most late‑model petrol engines are built. Technical references for the H6’s engines (the GW4C20 2.0‑litre turbo petrol offered in Australia/NZ and the GW4G15-series 1.5‑litre turbo in other markets) specify an individual coil per cylinder with ECU control, eliminating high‑tension leads.

• Haval H6 GW4C20 Engine Workshop/Service Manual (Ignition System section): details “individual ignition coil per cylinder” architecture with no HT leads.
• Haval H6 Owner’s/Service information (2017 AU/NZ): maintenance items list spark plugs and coil assemblies, no ignition-lead replacement item appears.
• Industry references (e.g., Bosch Automotive Handbook on COP systems, Autodata/HaynesPro listings for 2017 H6): specify coil‑on‑plug ignition, no distributor, no HT leads.

Why no ignition-leads on a 2017 H6? COP systems fire the spark plug directly from the coil, which means stronger, more consistent spark energy, better combustion control, and fewer electrical losses. It also improves reliability—there’s no long lead to crack, track, or absorb moisture—helping emissions and performance. It’s tidier under the bonnet and simplifies servicing, too.

What should H6 owners look after instead? Focus on spark plugs, the coil boots, and the coils themselves. Replace spark plugs to the schedule in the service book (many iridium plugs are around the 60,000–100,000 km mark, but follow the Haval interval for your engine). If there’s a misfire under load, rough idle, or a Check Engine light with codes like P030X, have a tech check coil health and plug condition. When removing coils, disconnect the battery, blow out the plug wells before pulling a coil, and refit plugs to the workshop torque spec. A light smear of dielectric grease on the coil boot can help sealing. If water has entered the plug tubes (after washing the engine bay, for example), dry them out promptly to prevent tracking. No need to shop for ignition leads—they’re simply not part of this vehicle.

Popular questions

Where are the ignition leads on a 2017 Haval H6?

They don’t exist on this model. Under the plastic engine cover you’ll find a coil on top of each spark plug. Those coils connect with short rubber boots straight onto the plugs—no traditional HT leads are used.

Can I fit aftermarket ignition leads for more power on my H6?

No. Because the H6 is coil‑on‑plug, there’s nowhere to fit leads. If you’re chasing smoother running, focus on fresh OEM‑spec iridium plugs, healthy coils, quality fuel, and keeping the intake system and sensors in good nick.

What should be serviced instead of ignition leads on a 2017 H6?

Replace spark plugs at the schedule in the logbook, inspect coil boots for cracking or oil ingress, and test/replace any weak coils if misfires occur. Keeping the plug tubes clean and dry helps avoid tracking and misfire issues.