Parts for your 1998 Nissan Pulsar-Sump plug washers

1998 Nissan Pulsar sump-plug-washers

Technical sources confirm the 1998 Nissan Pulsar (N15 series, GA16DE and SR20DE engines) uses a sump-plug-washer on the engine oil drain plug. The Nissan Pulsar N15 Factory Service Manual instructs replacement of the “drain plug gasket” during engine oil changes, and Nissan’s electronic parts catalogue lists a genuine oil drain plug gasket (commonly referenced as 11026-01M02, superseded in some catalogues by 11026-JA00A) for these engines. These factory references establish that a sump-plug-washer is fitted and is considered a normal service item on the 1998 Pulsar.

On this Pulsar, the sump-plug-washer is a small, crush-style gasket that sits under the head of the oil drain plug. Its job is simple but crucial: seal the plug to the alloy sump so fresh oil stays in and road grime stays out. When the plug is tightened, the soft aluminium or copper washer deforms slightly to create a tight, reliable seal. Without it, even a correctly torqued plug can weep oil, leaving spots on the driveway and risking low oil levels over time.

As part of regular servicing, it’s smart to replace the sump-plug-washer at every oil and filter change. They cost very little and help avoid leaks that can be a real nuisance. Most N15 Pulsars take a commonly available Nissan-style crush washer, sizes are typically listed by reputable parts catalogues for the GA16DE and SR20DE. If in doubt, match the washer to the old one or check by VIN with a parts counter.

Good practice for the 1998 Pulsar looks like this:

• Have a new crush washer ready with each oil change.
• Clean the sump face and plug head before refitting.
• Tighten the plug to the factory spec (use a torque wrench, many tech guides place it in the ~30–40 N·m range—follow the service manual for the exact spec).
• After a short drive, check under the car for any fresh oil around the plug.

Reusing an old crush washer is a bit of a gamble. Once it’s been flattened, it may not seal the same way again, especially if it’s nicked or work-hardened. If a washer looks grooved, cracked, or uneven, bin it and fit a fresh one. For owners who do higher kilometres or frequent short trips, sticking to consistent oil service intervals and replacing the washer each time keeps the Pulsar’s SR or GA engine tidy and leak-free under the bonnet.

• What size sump-plug-washer does a 1998 Nissan Pulsar use?
• How often should the washer be replaced on an N15 Pulsar?
• Can the sump plug washer be reused if it looks OK?

What size sump-plug-washer does a 1998 Nissan Pulsar use?
Most N15 Pulsars with GA16DE or SR20DE engines use a Nissan-style crush washer commonly supplied for these models by parts catalogues. Because variants and aftermarket plugs exist, the safest bet is to match the new washer to the old one or confirm by VIN with a parts supplier.

How often should the washer be replaced on an N15 Pulsar?
Replace the sump-plug-washer at every oil change. It’s designed to crush once for a reliable seal. Swapping it each service helps prevent slow leaks and keeps the sump area clean.

Can the sump plug washer be reused if it looks OK?
It’s not recommended. Crush washers deform to seal, once flattened, they may not reseal properly. If it’s been removed, fit a fresh washer to avoid seepage or drips.