Parts for your 1999 Nissan Primera-Sump plug washers

1999 Nissan Primera sump plug washers — what they do and when to replace

Yes, the 1999 Nissan Primera (P11) uses a sump plug washer. Factory documentation makes this clear: the Nissan Primera P11 Factory Service Manual (1999) in the Maintenance and Lubrication sections instructs replacing the “gasket—drain plug” whenever the oil is drained and the plug refitted. The Nissan FAST electronic parts catalogue for P11 lists a “GASKET—DRAIN PLUG” (commonly Nissan p/n 11026-01M02 and later supersessions such as 11026-4N200) across popular P11 engines like GA16DE, SR20DE and CD20. The Haynes Nissan Primera (1995–2001) manual also notes refitting the drain plug with a new sealing washer. So, on a 1999 Primera, this part is absolutely relevant and fitted from the factory.

On the Primera, the sump plug washer is a small aluminium or copper crush washer that sits between the oil drain plug and the sump. Its job is simple but critical: it deforms slightly as the plug is tightened to create a reliable oil-tight seal. That crush action prevents annoying weeps on the driveway, helps the plug reach the correct clamping load at the specified torque, and protects the softer sump face from galling or groove marks.

For routine servicing, it’s smart practice to replace the washer at every oil change. These washers are designed as single-use, once they’ve been crushed, they don’t spring back the same way next time. Reusing them can lead to seepage or the temptation to over-tighten the plug—neither is ideal for the sump threads. Most owners keep a small pack of the correct-size washers on hand (the Primera typically uses a 14 mm drain plug gasket, as per the OEM listings noted above).

When fitting a new washer, wipe the sump face and the plug clean of old oil and debris. Thread the plug in by hand first to avoid cross-threading, then tighten to the factory torque spec shown in the Primera FSM for the specific engine. Don’t stack washers, and don’t add sealants—if the surfaces are clean and the correct washer is used, it’ll seal as intended.

• Replace the washer at every oil change or any time the drain plug is removed.
• Inspect after servicing: a light film of oil around the plug suggests the washer should be renewed and the torque rechecked.
• If the plug has been overtightened in the past, consider replacing the plug along with the washer and inspect the sump threads.

Does a 1999 Nissan Primera have a sump plug washer?

It does. Nissan’s P11 factory service information specifies a replaceable drain plug gasket, and the parts catalogue lists an OEM washer for the vehicle. If the oil’s being changed, the washer should be renewed.

What size and part number sump plug washer suits a 1999 Primera?

The Primera typically uses a 14 mm crush washer. Common Nissan listings include “GASKET—DRAIN PLUG” p/n 11026-01M02 (and later 11026-4N200). Always match by engine and VIN if unsure, as markets and engines can vary.

How often should the sump plug washer be replaced, and can it be reused?

Replace it at every oil change. It’s a single-use crush washer—reusing it can lead to weeping leaks or the need to over-tighten the plug. A fresh washer, clean mating faces and correct torque are the go.