Parts for your 1998 Nissan Primera-Sump plug washers

1998 Nissan Primera sump-plug-washers

Checking against technical sources, sump-plug-washers are used on the 1998 Nissan Primera. The Nissan P11 factory service manual (Lubrication System) specifies the engine oil drain plug is sealed by a crush-type gasket, and the Nissan FAST/EPC parts catalogue lists a drain plug gasket for P11 engines (GA16DE, SR20DE and CD20), commonly shown as Nissan part number 11026-01M02 (14 mm crush washer). The FSM also gives a typical refit torque for the sump plug of about 34–44 N·m. That means sump-plug-washers are relevant and should be replaced as part of routine servicing on a 1998 Primera.

On a 1998 Nissan Primera, the sump-plug-washer does a simple but critical job: it crushes slightly when the sump plug is tightened, creating a reliable seal between the plug and the alloy sump. That soft aluminium or copper ring compensates for tiny imperfections, helps the plug reach the correct torque without galling the threads, and keeps engine oil where it belongs. Because it’s a crush washer, it’s designed as a single-use item—once compressed, it won’t spring back the same way twice.

Best practice in Australia and New Zealand is to replace the sump-plug-washer at every oil change. It’s inexpensive insurance against seepage, drips on the driveway, and the risk of over-tightening a reused washer to “chase” a seal. For most P11 variants, a 14 mm ID crush washer (often 11026-01M02) is the go, quality aftermarket aluminium or copper equivalents are fine. If your Primera is a diesel (CD20), confirm by VIN or engine code, as some listings differ in washer thickness.

When servicing the Primera, clean the mating face on the sump, fit a fresh washer to the plug, and tighten with a torque wrench to spec (around 34–44 N·m as per the P11 manual). Avoid thread sealants—they’re not needed with a proper crush washer. After topping up oil, run the engine, then check underneath for any weeps. Spot a drip later? Don’t crank harder on the spanner, fit a new washer and re-torque. If a previous tech has overtightened and the plug feels loose, sort the threads (insert/repair) before driving further.

• Replace the washer every oil change (time and kilometres as per your service interval).
• Use the correct 14 mm crush type for GA16DE/SR20DE, verify for CD20 diesel.
• Tighten to the factory torque, don’t rely on “feel”.

Popular questions about 1998 Nissan Primera sump-plug-washers

What size sump-plug washer does a 1998 Nissan Primera use?

Most 1998 Primera P11 petrol engines (GA16DE and SR20DE) take a 14 mm crush washer, commonly referenced by Nissan as 11026-01M02. Quality aftermarket 14 mm aluminium or copper crush washers are suitable. If the car is a CD20 diesel, confirm the exact listing by VIN, as some catalogues specify a different thickness.

Do you really need to replace the sump-plug-washer at every service?

Yes. It’s a single-use crush gasket. Reusing it risks slow leaks, weeping around the plug, and the temptation to over-tighten. Given the tiny cost, swapping it at each oil and filter change is the smart, tidy, and manufacturer-aligned approach.

What torque should the sump plug be tightened to?

The P11 factory service manual specifies roughly 34–44 N·m for the drain plug. Use a torque wrench, especially with an alloy sump. If you’re unsure of engine variant or any prior repairs, verify against the exact engine section of the FSM.