Parts for your 2016 Toyota C-hr-Sump plug washers

2016 Toyota C‑HR sump plug washers: what they do and when to replace them

Based on Toyota technical literature, the 2016 Toyota C‑HR uses a sump plug washer on the engine oil drain bolt. The Toyota Repair Manual for C‑HR (models including NGX10/NGX50 1.2‑litre turbo and ZYX10 hybrid released in 2016) specifies refitting the drain plug with a new gasket and tightening to the listed torque. The Toyota Electronic Parts Catalogue also lists a “Gasket, drain plug” for these engines, commonly supplied as an aluminium crush washer (e.g., Toyota part number 90430‑12031). So, a sump plug washer is relevant and fitted to the 2016 C‑HR.

The sump plug washer is a small, single‑use seal that sits under the drain bolt and provides a reliable, leak‑free seal against the oil pan. On the C‑HR it’s a crush‑type aluminium gasket: when the bolt is tightened, the washer compresses slightly to take up any tiny irregularities between the bolt head and the pan surface. That controlled “crush” is what prevents weeping and drips after an oil change.

As part of routine servicing, this washer should be replaced at every engine oil change. Reusing a crushed washer can lead to slow leaks, or tempt over‑tightening to chase a seal—risking thread damage to the sump. Toyota specifies tightening the C‑HR’s drain plug to about 39 N·m, which is enough to crush a fresh washer and seal properly without stressing the pan.

Genuine Toyota washers are inexpensive and widely available, and quality aftermarket aluminium or copper equivalents also work well if they match the correct size (M12 drain plug gasket). Keeping a couple on hand makes DIY servicing straightforward for both the 1.2‑litre turbo and the 1.8 hybrid variants.

• Replace the sump plug washer at every oil change—don’t reuse.
• Clean the mating surfaces on the pan and bolt before refitting.
• Install the new washer flat against the pan, then torque the bolt to 39 N·m.
• After the first heat cycle, check for any signs of weeping around the plug.

A fresh sump plug washer is cheap insurance against leaks, oil mess on the driveway, and under‑body grime—exactly the sort of small part that quietly does a big job for the 2016 Toyota C‑HR.

Popular questions about 2016 Toyota C‑HR sump plug washers

What size sump plug washer does the 2016 Toyota C‑HR use?
The C‑HR uses an M12 crush washer on the engine oil drain plug. Toyota commonly supplies it as an aluminium gasket (e.g., 90430‑12031). Correct fit matters, so sticking with the specified M12 washer ensures proper sealing.

How often should the sump plug washer be replaced on a 2016 C‑HR?
It should be replaced at every engine oil change. The washer is designed to crush once. Reusing it increases the chance of seepage and can encourage over‑tightening, which risks damaging the sump threads.

What torque should the C‑HR’s drain plug be tightened to?
Toyota service data specifies about 39 N·m for the engine oil drain plug on the 2016 C‑HR. Using a torque wrench helps achieve the correct crush of the new washer without overtightening.