Parts for your 2022 Toyota C-hr-Sump plug washers

2022 Toyota C-HR sump plug washer: what it does and when to replace it

Yes, the 2022 Toyota C‑HR uses a sump plug washer (also called an oil drain plug gasket). This isn’t a cosmetic extra — it’s a specified service item. Toyota’s owner’s manual for the C‑HR directs fitting a new gasket to the drain plug at each engine oil change, and the workshop repair procedures flag the washer as non‑reusable. Toyota’s Electronic Parts Catalogue also lists a dedicated drain plug gasket for 2022 C‑HR variants, including both the 2.0‑litre M20A‑FKS petrol and the 1.8‑litre 2ZR‑FXE hybrid. A commonly specified Toyota Genuine part is the oil drain plug gasket 90430‑12031. Referencing these technical sources confirms the washer is fitted and expected to be replaced as part of routine servicing.

On the 2022 C‑HR, the sump plug washer is a soft crush washer that sits between the drain plug head and the sump face. When the plug is tightened, the washer compresses slightly to create a reliable seal. That controlled crush does the heavy lifting: it prevents weeping after heat cycles, helps the plug reach proper clamping without over‑tightening, and protects the sump face from galling. Reusing an old washer — once it’s been flattened — is a classic cause of slow drips that leave spots on the drive and make a mess of the undertray.

Best practice on this model is simple: replace the washer at every oil change, whether the C‑HR is the 2.0 petrol or the hybrid. It’s a low‑cost part that saves hassle later. During servicing, the tech should remove the old washer, clean the plug threads and mating face, check the sump’s seating surface for nicks, and install a correct‑spec washer — not a generic that’s too hard or the wrong size. Don’t stack washers to “make it seal”, fit one correct washer and tighten the plug to the specified torque for the engine. After refilling and a short run, a quick torch check around the plug will confirm it’s bone dry.

DIY owners should keep a couple of spare washers on hand, replace them time‑based even if doing low kilometres, and never reuse a crushed one. It’s a tiny part that keeps the C‑HR tidy, leak‑free and easy to service the next time the oil’s due.

Does the 2022 Toyota C‑HR really need a new sump plug washer at every oil change?

Yes. Toyota’s service procedures treat the washer as a non‑reusable crush gasket. Once it’s compressed, it won’t spring back to seal properly. Replacing it each service helps ensure the plug seals first go, without over‑tightening or chasing weeps later.

What type of sump plug washer suits a 2022 C‑HR?

The C‑HR uses a crush‑type drain plug gasket sized for its factory drain bolt. Toyota Genuine 90430‑12031 is commonly specified across C‑HR engines for this model year. Always confirm by VIN or parts catalogue, and avoid mixing in fibre or copper washers that don’t match the intended spec.

Can the old washer be reused if it “looks fine”?

Not recommended. A used washer may look tidy but it’s already flattened and can seep after a few heat cycles. Fit a fresh, correct‑spec washer and you’re far less likely to see drips on the driveway or have to over‑tighten the plug.