Parts for your 2006 Daihatsu Terios-Sump plug washers

2006 Daihatsu Terios sump plug washers

Technical references confirm a sump plug washer is used on the 2006 Daihatsu Terios. The Daihatsu Terios J200 Series Workshop Manual (Engine Mechanical – Lubrication) specifies fitting a new drain plug gasket at each oil change, and the Toyota Rush J200/J210 repair manual (the sister model with the same 3SZ‑VE engine) reinforces the same instruction. Daihatsu’s electronic parts catalogue lists “Gasket, drain plug” for the J200 Terios—commonly an aluminium crush type—sold under p/n 90043‑41041, with widely cross‑referenced Toyota numbers used in some markets (for example 90430‑12031). So yes, this Terios is designed to run a crush‑type sump plug washer.

On this model, the sump plug washer is a small but critical sealing ring that sits between the drain plug head and the alloy sump. As the plug is tightened, the aluminium (or copper) washer compresses to take up tiny surface imperfections, creating a reliable, serviceable seal that keeps engine oil where it belongs. Without a good washer—or if the old one is reused until it goes hard—owners often see weeping around the plug, a film of oil on the bottom of the pan, or the temptation to overtighten the plug to stop a drip. That last bit can spell trouble on an alloy sump.

Best practice on a 2006 Terios is to replace the sump plug washer at every oil change. It’s a low‑cost, single‑use item, and the workshop manuals call it out for a reason. During a service, the tech should drain the oil warm, clean the plug and sump face, fit a new crush washer of the correct size (most J200s use a 14 mm aluminium gasket—always confirm by VIN or parts catalogue), and tighten the plug to the factory torque. After refilling, a quick wipe and inspection for any fresh weep is smart. If the plug has been previously overtightened, check for thread damage, a new plug is cheap insurance compared with repairing a stripped sump.

Material‑wise, aluminium crush washers match the OE spec on most Terios variants and seal predictably. Copper crush washers can work too, but stay away from fibre or rubberised universal rings on this engine—they don’t compress the same way under heat cycles. Keeping a couple of correct washers on the shelf makes home servicing easy, tidy, and drama‑free.

• Replace the washer every oil change.
• Use the correct size and material (usually 14 mm aluminium for J200).
• Tighten the plug to the workshop manual torque—don’t “swing off” it.
• Inspect for weeps after the first drive.

Popular questions

Do all 2006 Terios models use a sump plug washer?
Yes. Factory documentation for the J200/J210 platform specifies a crush‑type drain plug gasket. The only time one wouldn’t be present is if an aftermarket quick‑drain valve has been fitted, which replaces the plug and incorporates its own sealing system.

How often should the sump plug washer be replaced on a 2006 Terios?
Every oil change. The washer is designed to deform once to seal properly. Reusing it risks seepage, which can leave an oily pan and dust build‑up. Fresh washer, correct torque, and a quick post‑service inspection is the go.

What size sump plug washer does the 2006 Terios use?
Most 2006 Terios (J200 with 3SZ‑VE) use a 14 mm aluminium crush washer. There can be market and VIN‑based variations, so it’s wise to confirm in the parts catalogue or by measuring the plug shank before buying in bulk.