Parts for your 2012 Toyota Rav4-Sump plug washers

2012 Toyota RAV4 sump plug washers — what they do and when to replace them

Yes, the 2012 Toyota RAV4 uses a sump plug washer (often called a crush washer). Toyota’s factory repair procedures for the 2AZ-FE petrol and 2AD series diesel engines specify installing a new drain plug gasket at each engine oil change and tightening the plug to about 39–40 N·m. Toyota’s Electronic Parts Catalogue lists a “Gasket, drain plug” for this model, commonly part number 90430-12031 (aluminium, 12 mm), with some markets using 90430-12028. These are the standard Toyota oil drain plug crush washers that provide the seal between the sump and the plug.

For the 2012 Toyota RAV4, the sump plug washer’s job is simple but critical: it’s a soft, single-use aluminium ring that deforms slightly when tightened to create a reliable, leak-free seal. Without it, the plug can seep oil, even if it feels tight. The washer also spreads the load so the sump face isn’t damaged, and it helps prevent galling between the steel plug and the alloy pan.

Owners looking after their 2012toyotarav4 sumpplugwashers as part of routine servicing should plan to fit a new washer at every oil change. It’s a cheap part that saves headaches later. Reusing a crush washer might work once or twice, but it’s a gamble—once it’s flattened, it won’t crush again properly and can weep. If there’s any doubt, bin it and fit new.

• Washer type and size: Aluminium crush washer, 12 mm ID (Toyota p/n commonly 90430-12031, market variations exist).
• Torque: Tighten the drain plug to roughly 39–40 N·m. Don’t guess—use a torque wrench to avoid over-tightening.
• Replacement timing: Every oil change (check your logbook, typically around 10,000 km or 6–12 months in AU/NZ conditions).
• Leak checks: After refilling, run the engine a minute, shut it down, and inspect the plug area for any drips or a damp film.
• Fitment tips: Clean the sump face, use only one washer, and make sure it sits squarely under the plug head.

Some aftermarket magnetic plugs include an O-ring, but the 2012 RAV4’s OEM setup is designed for a crush washer. Sticking with the Toyota-style aluminium gasket keeps things straightforward and aligns with factory guidance.

Technical references (no links): Toyota Repair Manual/TIS oil change procedures for 2AZ-FE and 2AD engines instruct to “install a new gasket to the drain plug” and torque the plug to around 39–40 N·m, Toyota EPC lists “Gasket, drain plug” for the RAV4 (e.g., 90430-12031 / 90430-12028).

Popular questions about 2012toyotarav4 sumpplugwashers

What size sump plug washer does a 2012 Toyota RAV4 use?

It’s a 12 mm aluminium crush washer used on the engine oil drain plug. Toyota commonly supplies part number 90430-12031 in many markets, with similar spec alternatives like 90430-12028 also seen. If buying aftermarket, ask for a 12 mm Toyota-style aluminium crush washer for the RAV4.

Stick to aluminium rather than fibre or copper unless the part specifically states Toyota compatibility. The correct crush washer ensures the plug seals at the specified torque without over-tightening.

How often should the sump plug washer be replaced on a 2012 RAV4?

Replace it at every oil change. That’s Toyota’s standard practice because crush washers are designed for one-time use. In AU/NZ, many 2012 RAV4s follow around 10,000 km or 6–12 months service intervals depending on conditions and engine type.

If the washer looks deeply flattened, scored, or hard, don’t reuse it. A fresh washer is inexpensive insurance against slow leaks and messy driveways.

What’s the correct torque for the 2012 RAV4’s sump plug with a new washer?

Around 39–40 N·m. That’s the typical Toyota spec for the 2AZ-FE petrol and 2AD-series diesel engines used in the 2012 RAV4. Always tighten with a torque wrench—overdoing it can distort the washer or damage the sump threads.

After torquing and refilling, run the engine briefly, shut it off, and check for any signs of seepage around the plug. If there’s a weep, the washer may be wrong spec or not seated cleanly.