Parts for your 2018 Nissan Pathfinder-Sump plug washers

2018 Nissan Pathfinder sump plug washers

According to Nissan’s own technical literature, the 2018 Nissan Pathfinder (R52, VQ35DE) does use a sump plug washer. The Nissan Pathfinder Service Manual (2018 R52, section LU – Lubrication System) specifies installing the drain plug with a new gasket/washer at each oil change, and the Nissan parts catalogue (FAST, Group 111 – Engine Lubrication) lists a 14 mm aluminium crush-type drain plug gasket (commonly supplied under Nissan part number 11026-01M02, supersessions may apply by market/VIN). So, for this model, sump plug washers are absolutely relevant and required.

A sump plug washer on the 2018 Pathfinder is a small, single-use aluminium ring that sits under the engine oil drain plug. Its job is simple but critical: it deforms slightly as the plug is tightened to create a tight, oil-proof seal between the sump and the plug. That crush action compensates for tiny imperfections on the mating surfaces, keeping the engine’s lifeblood where it belongs. Without a good washer, owners can end up with weeping around the plug, oily undertrays, and in the worst case, a slow oil loss that risks engine damage.

Because it’s designed to deform, the washer is a consumable. The factory guidance is to fit a new one at every oil change. That’s inexpensive insurance during routine servicing, whether the Pathfinder’s maintenance is done at home or by a workshop. Reusing a flattened washer is a false economy, it may seal once more, but the risk of drips and the need to overtighten the plug goes up. Over-tightening can strip threads in the alloy sump—an expensive fix.

Best practice for the Pathfinder is straightforward:

• Replace the sump plug washer at each service interval (time/kilometres per the maintenance schedule).
• Clean the sump’s sealing face and the plug head, no sealant is required when the correct washer is used.
• Tighten the drain plug to the factory specification listed in the Service Manual (around the 30 N·m mark depending on market spec). Avoid “by feel” with a long breaker bar.
• Use the correct 14 mm aluminium crush washer, avoid hard, reusable or fibre types unless the part is confirmed for the VIN.
• After the oil fill and start-up, check under the vehicle for any signs of seepage around the plug.

Those simple steps, backed by Nissan’s Service Manual instructions and the parts catalogue listing, keep the 2018 Pathfinder leak-free and happy between services.

Popular questions about 2018 Nissan Pathfinder sump plug washers

Does the 2018 Pathfinder actually need a sump plug washer?
Yes. The Nissan Pathfinder Service Manual (R52, LU section) explicitly calls for installing the drain plug with a new washer at each oil change. It’s a crush washer that ensures a proper seal and prevents leaks.

What size and part number washer fits the 2018 Pathfinder?
It takes a 14 mm aluminium crush washer commonly supplied by Nissan under part number 11026-01M02. Depending on market and VIN, a superseding part number may be supplied, but it’s still a 14 mm crush type. A parts counter can confirm the correct number against the vehicle’s VIN.

How often should it be replaced, and what torque should the drain plug be tightened to?
Replace the washer every oil change—it's designed for single use. Tighten the drain plug to the factory specification given in the Service Manual for the VQ35DE engine (typically around 30 N·m). Using a torque wrench helps avoid stripped threads and ensures a reliable seal.