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Parts for your 2011 Nissan Dualis-Sump plug washers
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2011 Nissan Dualis sump plug washers
Technical documentation confirms the 2011 Nissan Dualis (J10, petrol MR20DE and diesel M9R) does use a replaceable sump plug washer. The Nissan Qashqai/Dualis J10 Series Workshop Manual (EM – Engine Mechanical) specifies fitting the drain plug with a new gasket/washer and tightening to about 34 N·m. The Haynes Nissan Qashqai (2007–2013) service manual echoes “fit a new sealing washer,” and Nissan’s genuine parts catalogue lists an oil drain plug gasket for this model range (commonly 11026-01M02 copper or 11026-4N200 aluminium, 14 mm). So, a sump plug washer is relevant and fitted on the 2011 Nissan Dualis.
On the Dualis, the sump plug washer is a small, single-use crush washer that seals the engine’s drain plug to the alloy steel of the sump. When the plug is tightened to spec, the soft metal washer deforms slightly to fill microscopic gaps, stopping oil weeps and helping maintain the correct torque without overstressing the threads. It’s a simple part that does a big job—keeping the engine oil where it belongs and the driveway clean.
As part of regular servicing, this washer should be replaced at every oil change. Reusing it might look fine on the day, but it can lead to slow seeping or a sudden drip once the engine’s hot. The Dualis typically uses a 14 mm inside-diameter washer, genuine Nissan options include aluminium (11026-4N200) and copper (11026-01M02). Either material seals well, many techs prefer aluminium for alloy sumps and copper for durability—both are suitable when matched to the 14 mm plug.
Best practice is straightforward: clean the sump face, install a fresh washer, and tighten the plug to the workshop manual torque (around 34 N·m unless the specific engine variant states otherwise). Over-tightening can distort the washer and risk thread damage, under-tightening can cause weeps. After the first drive, a quick visual check for any misting around the plug is smart. If a washer looks gouged, flattened unevenly, or has been reused, bin it and fit a new one.
- Replace the washer every oil change.
- Use the correct 14 mm crush washer (Nissan genuine or quality equivalent).
- Tighten to the specified torque and check for leaks after the first heat cycle.
Referenced sources: Nissan Qashqai/Dualis J10 Workshop Manual (EM, Engine Mechanical – MR20DE and M9R oil change procedure, drain plug torque and “always replace washer”), Haynes Nissan Qashqai 2007–2013 manual (engine oil and filter service notes), and Nissan Genuine Parts catalogue (oil drain plug gasket 11026-01M02 / 11026-4N200).
Popular questions
What size sump plug washer does a 2011 Nissan Dualis use?
The Dualis typically uses a 14 mm inside-diameter crush washer on the engine oil drain plug. Genuine Nissan options commonly include 11026-01M02 (copper) and 11026-4N200 (aluminium). Variants across petrol and diesel still generally share the 14 mm spec, but checking by VIN is always a safe bet.
Should the sump plug washer be replaced every service?
Yes. It’s a single-use crush washer designed to deform once for a perfect seal. Reusing it risks seepage, especially after heat cycles. Fit a new washer at every oil change and tighten the plug to around 34 N·m as per the J10 workshop manual’s guidance.
Can a fibre or nylon washer be used instead?
While fibre or nylon washers can seal in a pinch, the Dualis was designed around a metal crush washer for proper torque retention and heat resistance. For the best long-term result, stick with aluminium or copper in the correct 14 mm size.
