Parts for your 1999 Nissan Pulsar-Sump plug washers

1999 Nissan Pulsar sump plug washers

Yes — the 1999 Nissan Pulsar (N15 series, including GA16DE and SR20DE engines) uses a crush-type sump plug washer on the engine oil drain plug. This is documented in the Nissan Pulsar N15 Factory Service Manual (Lubrication section), which instructs replacement of the drain plug gasket whenever the plug is removed and specifies the drain plug torque. Nissan’s parts catalogue (FAST) lists the drain plug gasket as 11026-01M02, commonly superseded by 11026-4N200, for an M14 drain plug.

A sump plug washer does a deceptively important job on the N15 Pulsar: it forms a soft, single-use seal between the drain plug head and the sump, preventing weeps and drips once the oil gets hot and thins out. On this model, the washer is typically aluminium (sometimes copper), sized for an M14 plug. Being a crush washer, it deforms once to match the mating faces, reusing it risks micro-leaks, messy undertrays, and the slow loss of oil that no one wants to see on the driveway.

As part of routine servicing, the washer should be replaced at every oil change. The Factory Service Manual calls for tightening the drain plug to around 25–34 N·m with a fresh gasket fitted. That torque range is enough to compress the washer and seal the joint without distorting the sump or stressing the threads. Clean mating surfaces, fit the new washer onto the plug, seat the plug by hand to avoid cross-threading, then torque it correctly. After the first warm run, a quick look for any dampness around the plug is good practice.

Choosing the right washer is straightforward. Aluminium crush washers are closest to Nissan’s OE feel and sealing behaviour, copper types also work well and can handle heat cycles but should still be treated as single-use. Fibre or rubberised washers aren’t typically specified for this application and can change torque feel. Keeping a couple of spares in the glovebox or service kit makes future oil changes smoother.

Signs the Pulsar could do with a new washer include a faint oil halo around the plug, a light mist on the sump after a drive, or that tell-tale one-drop-each-night under the car. For a few dollars and almost no extra effort, replacing the washer each service is cheap insurance for a tidy, leak-free N15.

• Washer type: single-use crush washer (aluminium or copper), M14
• Recommended torque: 25–34 N·m with new washer (per N15 FSM)
• Technical sources: Nissan Pulsar N15 Factory Service Manual (Lubrication section), Nissan FAST parts catalogue (Drain plug gasket 11026-01M02 / 11026-4N200)

Popular questions about 1999 Nissan Pulsar sump plug washers

What size sump plug washer does a 1999 Nissan Pulsar use?
The N15 Pulsar uses a washer for an M14 drain plug. Genuine-style options typically match Nissan part numbers 11026-01M02 or 11026-4N200. An aluminium crush washer in that size provides the OE sealing feel and fit across GA16DE and SR20DE variants.

How often should the washer be replaced?
Best practice is every oil change. The washer is designed to crush once, reusing it can lead to seepage, especially after a few heat cycles. Replacing it at each service helps maintain correct torque and a clean, dry sump area.

What torque should be used on the sump plug?
With a new washer fitted, tighten the drain plug to roughly 25–34 N·m as indicated in the N15 workshop manual. This range reliably compresses the washer for a proper seal without over-stressing threads or the sump flange.