Parts for your 2007 Nissan Dualis-Sump plug washers

2007 Nissan Dualis sump plug washer — is it used, and what to know

Based on technical sources, the 2007 Nissan Dualis (J10, also known as Qashqai in some markets) does use a separate sump plug washer. The Nissan Dualis/Qashqai J10 Series Service Manual (EM – Engine Mechanical, Lubrication System, and MA – Maintenance, 2006–2010 editions) specifies installing the drain plug with a new washer at each oil change, tightening to approximately 34 N·m. Nissan’s parts catalogues (FAST/ELFAST) list a dedicated “Gasket – Drain Plug” for these engines, commonly part number 11026-01M02 (aluminium crush type) or its superseding equivalents, for the MR20DE petrol and applicable diesel variants. These sources confirm the washer is relevant and intended to be replaced as part of routine servicing.

On the 2007 Dualis, the sump plug washer is a small, single-use sealing ring that sits between the drain bolt head and the sump face. Its job is simple but critical: it crushes slightly as the plug is torqued up, creating a reliable seal that prevents engine oil weeps and drips. Nissan specifies an aluminium crush washer (M14) for this model, and the service literature is clear that a fresh washer should be fitted at every oil change. Reusing a flattened washer can lead to annoying leaks on the driveway and, over time, a low-oil situation that the driver might not catch straight away.

Good practice for Dualis owners and workshops is to keep a few correct-size washers on hand. At service time, clean the sump face and the plug threads, fit a new washer, and torque the drain plug to about 34 N·m—no need to swing off it with a breaker bar. Over-tightening can distort the washer or risk damage to the sump threads. Aluminium is OE-correct, but a quality copper crush washer of the right size can also seal well if needed, avoid fibre washers or generic sizes that don’t sit properly. After refilling the engine with the right grade and litres of oil, run the engine, check under the bonnet, and inspect for any weeping around the plug. If a magnetic aftermarket plug is fitted, it still relies on a crush washer unless it uses a bonded seal—replace the washer portion just the same. It’s a cheap part that saves a lot of hassle, and swapping it takes seconds during a standard service.

• Washer type: Aluminium crush washer (M14), Nissan P/N commonly 11026-01M02 or superseding equivalent
• Drain plug torque: ~34 N·m
• Replace: Every oil change or any time the plug is removed

FAQ

What size sump plug washer does the 2007 Nissan Dualis use?
It uses an M14 aluminium crush washer, typically around 14 mm inner diameter and ~22 mm outer diameter. Nissan’s genuine listing commonly appears as 11026-01M02 or a direct supersession. Always match the washer to the plug and sump face for a proper seal.

Should the washer be replaced at every service?
Yes. It’s a single-use crush washer. Once compressed, it won’t spring back, so reusing it can cause weeps. Replacing it at each oil change is inexpensive insurance against leaks and stripped threads from over-tightening.

What torque should the sump plug be tightened to?
For the Dualis J10, the service manual specifies roughly 34 N·m for the engine oil drain plug. Use a torque wrench—nipping it up more won’t make it seal better and can damage the sump or deform the new washer.