Parts for your 2017 Toyota Crown-Sump plug washers

2017 Toyota Crown sump plug washers — are they used and what to know

Per Toyota technical sources, the 2017 Toyota Crown (S210 series, including ARS210 2.0T, AWS210 hybrid, and GRS214 V6 variants) uses a replace-once sump plug washer on the engine oil drain plug. The Toyota Repair Manual for the S210 series specifies fitting the drain plug with a new gasket/washer at each oil change, and the Toyota Electronic Parts Catalogue lists a 12 mm crush-type washer such as 90430‑12031 (also seen as 90430‑12028/12027 on some engines). Typical Toyota tightening torque for the oil drain plug is about 39–40 N·m (29–30 ft·lbf).

On the 2017 Toyota Crown, the sump plug washer’s whole job is to seal the drain plug to the alloy sump and keep oil where it belongs. It’s a soft, crush-type gasket (usually aluminium) that deforms once when the plug’s tightened to spec. That single-use “crush” creates a reliable seal without over-stressing the sump threads. It also helps maintain the correct clamping load, so the plug doesn’t work loose, and it minimises weeping that can make a mess of the undertray.

Servicing advice is simple: treat the sump plug washer as a consumable. At each oil change, make sure the old washer isn’t stuck to the sump face, clean the mating surfaces, fit a new 12 mm Toyota-spec washer, then tighten the plug to around 39–40 N·m. Don’t reef on it, too much grunt can distort the washer, mark the sump face, or threaten the threads.

Owners sometimes ask about reusing the washer or annealing copper types. While an experienced tech might get away with it, Toyota’s guidance is to replace, as the washers are inexpensive and reusing them increases the chance of a slow leak. If choosing aftermarket, match the inner diameter (12 mm), outer diameter, and thickness to Toyota’s spec. Aluminium crush types are the safe bet on Crowns from this era.

• Watch for tell-tales like a slight oil weep on the sump, spots on the driveway, or an oily smell after a service.
• If the plug won’t torque up cleanly, check the threads, a damaged sump thread needs proper repair (e.g., insert), not just a new washer.
• Hybrid models with large undercovers: ensure covers are refitted correctly to avoid trapping future leaks out of sight.

All up, fresh sump plug washers are cheap insurance on a 2017 Toyota Crown—fit a new one every service and it’s no dramas.

What size sump plug washer does a 2017 Toyota Crown use?

Most 2017 Crowns take a 12 mm crush washer that suits the standard Toyota oil drain plug. Genuine Toyota part numbers commonly used include 90430‑12031 (and in some catalogues 90430‑12028/12027). Always match by engine code and VIN to be sure, as Crown variants span multiple engines.

How often should the sump plug washer be replaced on a 2017 Toyota Crown?

Replace it at every oil change. Toyota’s service literature specifies using a new gasket/washer whenever the drain plug is refitted. It’s a single-use crush washer designed to deform once to seal properly.

Can a 2017 Toyota Crown’s sump plug washer be reused or annealed?

It’s technically possible with copper types, but not recommended. Toyota calls for a new washer each time, reusing increases the risk of weeping or leaks. Given the low cost, a fresh washer is the smarter move.