Parts for your 2009 Nissan Navara-Sump plug washers

2009 Nissan Navara Sump Plug Washers

Technical sources confirm that the 2009 Nissan Navara (D40) uses a sump plug washer. The Nissan D40 Service Manual (Maintenance and Lubrication sections) specifies refitting the engine oil drain plug with a new washer at each oil change and tightening to the stated torque. Nissan’s FAST parts catalogue lists the oil drain plug gasket (commonly 11026-01M02 for an M14 crush washer) for D40 variants, and workshop guides such as the Haynes manual for Navara 2005–2015 also instruct using a new sealing washer. So yes—this part is relevant and fitted to the 2009 Navara.

On the 2009 Navara, the sump plug washer is the small but mighty seal that sits under the oil drain plug. Its job is to deform slightly when tightened, creating a reliable seal between the plug and the sump so engine oil doesn’t weep out. Because the washer “crushes” to seal, it’s a wear item—once it’s compressed, it won’t spring back perfectly the next time. Reusing it risks small leaks, oil stains on the driveway, and potentially a low oil level over time.

Best practice for Aussie and Kiwi owners is to replace the washer at every service when the oil is changed. The D40 typically uses an M14 crush washer (14 mm internal diameter), usually aluminium or copper. Genuine Nissan washers and quality aftermarket equivalents both work well if the size is correct. During refit, clean the mating faces, fit a new washer, and tighten the plug to the specified torque. The D40 service literature calls for a new washer and torque within the factory range (commonly around the mid-30s to low-40s N·m depending on engine variant). Over-tightening can distort the washer or damage threads, under-tightening can cause seepage.

Why bother? A fresh washer costs next to nothing and protects against oil leaks, keeps servicing tidy, and helps the Navara’s YD25 diesel or petrol engines maintain proper lubrication without slow losses between services. It’s an easy add-on when doing oil and filter, and it’s the sort of small detail that keeps a hardworking ute feeling tight and trustworthy.

• Replace the washer at every oil change.
• Use the correct M14 crush washer (aluminium or copper).
• Clean surfaces and torque the drain plug to spec from the Nissan D40 manual.
• If you see oil misting around the plug, replace the washer and recheck torque.

Popular questions about 2009 Nissan Navara sump plug washers

What size sump plug washer does a 2009 Navara use?
The D40 Navara typically uses an M14 crush washer (about 14 mm ID, ~22 mm OD). Genuine Nissan part numbers commonly referenced include 11026-01M02, with suitable aftermarket equivalents available in aluminium or copper. Always check your specific engine and VIN to confirm.

How often should the sump plug washer be replaced?
Every oil change. Nissan’s D40 service guidance states to install the drain plug with a new washer. Because it’s a crush-style seal, reusing it can lead to minor leaks or weeping over time.

What torque should the sump plug be tightened to?
Use the torque specified in the D40 service manual for your engine variant. It’s commonly in the mid-30s to low-40s N·m range. Avoid over-tightening, a torque wrench and a new washer are the winning combo for a clean, leak-free seal.