Parts for your 2013 Toyota Rav4-Sump plug washers

2013 Toyota RAV4 sump plug washers: what they do and when to replace them

Based on Toyota technical sources, a sump plug washer is used on the 2013 Toyota RAV4. The Toyota Repair Manual for the 2AR-FE petrol and 2AD-series diesel (2013 RAV4, XA40) specifies fitting a new oil drain plug gasket at each engine oil change and tightening the plug to the stated torque. Toyota’s Electronic Parts Catalogue lists the oil drain plug gasket (commonly 90430-12031 for M12 applications) for this model. The factory procedure calls out “install a new gasket” and a torque around 39 N·m, confirming the washer is a standard service item.

On the 2013 RAV4, the sump plug washer (also called the drain plug gasket) is a small, crushable ring that seals the sump plug to the alloy steel of the oil pan. When tightened, the soft aluminium or copper washer deforms slightly to fill microscopic gaps, stopping any weeping under thermal expansion and vibration. It’s a tiny part that prevents a big headache—oil drips on the driveway, low oil levels, and messy undertrays.

Best practice for this RAV4 is to replace the washer at every oil change. Toyota service literature specifies using a new gasket each time the plug is removed. Reusing a flattened or scored washer risks seepage that can show up as an oily mist around the plug or a slow drip after a long drive. If the washer has already been reused, or shows grooves, cracks, or is stuck to the pan, it’s time for a fresh one.

For owners and workshops across Australia and New Zealand, stick with an OEM-style aluminium crush washer (e.g., Toyota 90430-12031 for M12 drain plugs as commonly fitted) or a reputable aftermarket equivalent. When refitting the plug, clean the mating surface, fit the new washer, and tighten to the specified torque (around 39 N·m for many RAV4 variants, always confirm for the exact engine code). Over-tightening can distort the washer and risk stripping threads, under-tightening can allow a weep.

It’s an inexpensive part that delivers reliable sealing between services, whether the RAV4 is commuting, touring, or towing. Toss a couple in the glovebox or service kit so they’re on hand when the next 5–10,000 km oil change rolls around, and enjoy a bone-dry sump area under the bonnet.

• Use a new crush washer at every oil change.
• Inspect for oil misting or drips after servicing.
• Tighten the sump plug to the factory torque spec.

Popular questions about 2013 Toyota RAV4 sump plug washers

What size sump plug washer does a 2013 RAV4 use?
Most 2013 RAV4 petrol models with the 2AR‑FE use an M12 drain plug with an aluminium crush washer commonly referenced as Toyota part 90430‑12031. Some regional diesel variants may differ. Checking the engine code and VIN in the Toyota parts system is the safest way to confirm the exact washer.

How often should the sump plug washer be replaced?
Replace it every time the sump plug is removed—typically at every engine oil change. Toyota workshop procedures specify installing a new gasket at each service to ensure a reliable seal and prevent weeping.

Can the old washer be reused?
It’s not recommended. Once crushed, the washer loses its ability to conform and seal perfectly. Reusing can lead to slow leaks. A new, correct-spec washer is inexpensive insurance against drips and low oil levels.