Parts for your 2019 Toyota Rav4-Sump plug washers

2019 Toyota RAV4 sump plug washers — what they do and when to replace

Based on Toyota technical documentation, the 2019 Toyota RAV4 (XA50 series, including petrol A25A‑FKS and hybrid A25A‑FXS) is fitted with a crush‑type sump plug washer. Toyota’s Repair Manual for the model states the drain plug must be installed with a new gasket and tightened to 30 N·m, and Toyota’s Genuine Parts Catalogue lists the oil drain plug gasket as aluminium, part number 90430‑12031 (12 mm). The Owner’s Manual also lists the drain plug tightening torque. So yes — sump plug washers are relevant and used on this vehicle.

On this RAV4, the sump plug washer (often called a drain plug gasket) sits under the sump plug head and provides a reliable seal between the steel plug and the alloy or steel sump. Being a soft aluminium “crush” design, it deforms slightly as the plug is torqued to spec, filling tiny imperfections so engine oil can’t seep past. That single‑use crush action is why Toyota specifies replacing it at each oil change.

Reusing a flattened washer can lead to slow weeps, oil spots under the car, or the temptation to over‑tighten the plug to chase a seal — a fast track to a stripped thread in the sump. Sticking with a fresh, correct‑size washer prevents all that drama and keeps servicing tidy and leak‑free.

Workshops across Australia and New Zealand typically replace the washer every service interval (commonly 12 months/15,000 km for local RAV4 schedules). Whether the vehicle is used for city commuting or long open‑road runs, the washer is an inexpensive consumable that protects a very expensive engine.

• Correct part: Toyota aluminium drain plug gasket 90430‑12031 (12 mm), or an equivalent quality aluminium crush washer.
• Tightening torque: 30 N·m (about 22 ft‑lb) on a clean, lightly oiled plug thread. No sealants or tape required.
• Best practice: Replace the washer at every oil change, never stack two washers, check for a clean sealing surface on the sump, inspect the plug for damaged threads and replace if marked.
• Post‑service check: After the first warm run, have a quick look under the bonnet and undertray for any fresh oil traces around the plug area.

Following the Toyota procedure — new washer, correct torque — keeps the 2019 RAV4’s lubrication system sealed properly and makes the next service just as straightforward.

Popular questions about 2019 Toyota RAV4 sump plug washers

Does the 2019 Toyota RAV4 use a sump plug washer?

Yes. Toyota’s Repair Manual instructs fitting the drain plug with a new gasket, and the Genuine Parts Catalogue lists an aluminium crush washer (p/n 90430‑12031) for the 2019 RAV4. It’s designed to be replaced at each oil change to ensure a proper seal.

This washer deforms slightly when tightened to spec, preventing leaks without needing sealant or tape.

How often should the sump plug washer be replaced?

Every oil change. For Australian and New Zealand schedules, that’s generally every 12 months or 15,000 kilometres for the 2019 RAV4, or sooner if the vehicle is serviced more frequently.

Because it’s a crush‑type gasket, it’s considered single‑use — reusing it risks seepage or over‑tightening.

What is the correct torque for the 2019 RAV4 sump plug?

30 N·m (about 22 ft‑lb), as specified in Toyota service information for the XA50 RAV4. Torqueing correctly compresses the new washer just enough to seal without damaging threads.

A calibrated torque wrench is recommended, over‑tightening can distort the washer and threaten sump threads.