Parts for your 2006 Toyota Hiace-Sump plug washers

2006 Toyota Hiace sump plug washers — are they used and why they matter

Yes — a sump plug washer is fitted to the 2006 Toyota Hiace and it’s absolutely relevant. Toyota’s Hiace H200 platform (2004–2013), including the 2006 models with 2KD-FTV/1KD-FTV diesel and 1TR-FE/2TR-FE petrol engines, uses a crush-type washer on the engine oil drain plug. Technical sources including the Toyota Electronic Parts Catalogue (H200 Hiace), the Toyota Repair Manual for the period, and dealer parts listings identify the drain plug bolt (commonly 90341‑12012) paired with an aluminium crush gasket, Toyota P/N 90430‑12031 (12 mm). Typical workshop data for these engines also specifies reusing the plug with a new washer and tightening to around 39 N·m, which aligns with Toyota service guidance.

On a 2006 Hiace, the sump plug washer’s job is simple but vital: it seals the drain plug to the sump, stopping weeps and full-on drips after an oil change. The factory washer is a soft aluminium “crush” type that slightly deforms when tightened, filling microscopic gaps between the plug flange and the sump face. That one-time crush is what makes it seal so well — and why it should be replaced every service.

For owners and workshops across Australia and New Zealand, swapping the washer with every oil change is cheap insurance. A reused or the wrong-size washer can lead to oil misting down the pan, the underside smelling of hot oil, or a slow loss of oil between services. Good practice on a 2006 Hiace looks like this:

• Use the correct washer size: 12 mm ID aluminium crush washer (Toyota 90430‑12031 is commonly specified for H200 Hiace).
• Clean the seating face on the sump and the plug flange, remove old gasket material.
• Hand-thread the plug first to avoid cross-threading, then torque to spec (about 39 N·m, model/engine dependent — confirm in the applicable Toyota service manual for your VIN).
• If the plug’s flange is grooved or the threads are damaged, replace the plug as well.
• After the refill, run the engine, then check for seepage around the plug and washer.

Whether the van hauls gear round town or tours long distances, keeping that small washer fresh helps protect the Hiace’s engine, keeps the driveway clean, and saves chasing nuisance leaks later.

Popular questions

What size sump plug washer does a 2006 Toyota Hiace use?

Most 2006 Hiace H200 engines use a 12 mm inside-diameter aluminium crush washer. Toyota commonly lists P/N 90430‑12031 for the oil drain plug gasket on these models. Always confirm against the engine code and VIN as production changes and regional specs can vary.

Do you really need to replace the washer at every oil change?

Yes. The Hiace’s washer is a single‑use crush type. Once compressed, it won’t reliably reseal. Replacing it each service helps prevent pesky drips, keeps oil where it belongs, and avoids over‑tightening the plug to chase a seal.

What’s the torque for the Hiace sump plug?

Workshop data for the H200 Hiace typically quotes about 39 N·m for the M12 drain plug. Use a torque wrench and a new washer, and confirm the exact figure in the correct Toyota service manual for your specific engine variant.