Parts for your 2017 Haval H6-Sump plug washers

2017 Haval H6 — Sump Plug Washers

Based on factory documentation, the 2017 Haval H6 does use a sump plug washer. The Haval H6 Service Manual for the GW4C20/GW4C20B engine (Lubrication System/Engine Oil Pan section) specifies refitting the drain plug with a new gasket/washer at oil changes. The Haval/Great Wall Electronic Parts Catalogue for MY2017 also lists the sump drain plug gasket as a separate consumable item. These technical sources confirm the sump plug washer is relevant and fitted to the 2017 H6.

On a 2017 Haval H6, the sump plug washer is the tiny but mighty bit that keeps engine oil where it belongs. It sits under the drain plug and provides a reliable seal between the plug and the alloy sump. Most H6s run a crush-style washer (commonly aluminium or copper), designed to slightly deform when tightened so it fills any microscopic gaps. That crush action stops seepage, helps the plug reach the correct clamping load, and reduces the temptation to over-tighten the plug to chase a seal — saving sump threads from grief.

As part of routine servicing, it’s good practice to replace the washer at every oil change. Crush washers are considered single-use: once compressed, they won’t spring back properly. Reusing them can lead to slow weeps that show up as an oily spot on the driveway or a misty film around the plug. If the H6 variant has a bonded rubber or composite washer, it may last longer, but replacing it regularly is still cheap peace of mind.

Servicing tips for owners and workshops alike:

• Have a couple of correct-size washers on hand before starting an oil change.
• After draining, wipe the sump face and plug clean, fit a fresh washer, and tighten the plug to the factory torque spec shown in the service data. Avoid “gorilla tight” — overdoing it can distort the washer and damage threads.
• Refill with the correct oil, idle briefly, then check underneath for any signs of weeping. Re-check after the first drive.

Signs it’s time for attention include an oil halo around the plug, a flattened or scored washer, or a plug that needs a surprising amount of torque to seal. Given how inexpensive washers are, swapping one out each service is a no-brainer — it keeps the H6 tidy, leak-free, and easy to maintain for the long haul.

FAQs

What size sump plug washer does a 2017 Haval H6 use?
Most 2017 H6 models commonly use a 14 mm crush washer (aluminium or copper). Variations can exist by engine or market, so it’s best to confirm by VIN against the Haval parts catalogue or by measuring the plug’s shank diameter and matching an OE-equivalent washer.

Can the sump plug washer on a 2017 Haval H6 be reused?
Crush washers are designed as single-use. Once compressed, they don’t seal as well the second time. Bonded or composite types can sometimes be reused if in perfect nick, but replacing at each oil change is the safest, low-cost option.

What happens if the washer isn’t replaced?
There’s a higher chance of slow leaks, which can make a mess and lead to low oil over time. People often compensate by over-tightening the plug, which risks stripping the sump threads. A fresh washer lets the plug tighten to spec and seal properly without drama.