Parts for your 1992 Nissan Primera-Sump plug washers

1992 Nissan Primera sump plug washers — are they used?

Yes — the 1992 Nissan Primera (P10, including GA16DE and SR20DE engines) uses a sump plug washer, also called an oil drain plug gasket. Nissan’s P10 Factory Service Manual (Maintenance/Engine Lubrication sections) specifies refitting the drain plug with a new washer at each oil change, and the Haynes Primera manual for 1990–1999 models echoes the same advice. Nissan’s FAST parts catalogue lists a dedicated crush-type washer (commonly 11026-01M02 for 14 mm applications) for the Primera’s sump plug, confirming it’s a normal service item on this vehicle.

On a 1992 Primera, the sump plug washer does a deceptively big job: it seals the drain plug against the alloy sump so engine oil doesn’t seep out once everything’s buttoned up. It’s a crush washer — typically aluminium or copper — designed to deform once when torqued, filling tiny imperfections between the plug face and the sump. That’s why it’s considered single-use. Reusing a flattened washer risks slow leaks, drips on the driveway, or a plug that needs over-tightening to seal properly.

As part of regular servicing, it’s smart to replace the washer every oil change. Most P10s with the SR20DE take a 14 mm crush washer, some GA16DE variants may use a 12 mm washer. Because there’s variation, it pays to confirm by engine/plug size or VIN before you buy. When installing, clean the sump’s sealing land and the plug face, start the plug by hand to avoid cross-threading, fit a fresh washer, then torque the plug to spec. A typical spec for these Nissans is around 30–34 N·m, but always follow the figure in the factory manual for your exact engine.

• Replace the washer at every oil change (about every 10,000 km or 6–12 months, depending on use).
• Use quality aluminium or copper crush washers, genuine or reputable aftermarket is fine.
• Watch for tell-tales: a light oil film around the plug, fresh spots under the sump, or a plug that feels “too easy” to seal usually means the washer’s past it.
• Never over-tighten to “make it seal” — that risks stripping the sump threads, correct torque with a new washer is the go.
• Keep a spare washer or two in the glovebox so an oil change never stalls for a $2 part.

A fresh sump plug washer keeps the Primera tidy, leak-free, and easy to service — exactly how a well-kept P10 should be.

What size sump plug washer does a 1992 Nissan Primera use?

Most SR20DE-equipped P10s use a 14 mm crush washer (commonly Nissan 11026-01M02 or its supersession). Some GA16DE engines may use a 12 mm washer. The quickest way to be sure is to check the plug/washer outer diameter or confirm by VIN/engine code before purchase.

How often should the sump plug washer be replaced?

Replace it at every oil change. The washer is designed to crush once for a proper seal. Reusing it can lead to slow seepage or the need to over-tighten the plug, which isn’t great for the sump threads.

What torque should the drain plug be tightened to?

Around 30–34 N·m is typical for the P10 Primera, but always follow the exact figure in the Nissan Factory Service Manual for your engine. Use a torque wrench — no need to swing off the spanner.