Parts for your 2006 Nissan Maxima-Sump plug washers

2006 Nissan Maxima sump plug washers — what they do and when to replace them

Based on technical references — the 2006 Nissan Maxima Factory Service Manual (Engine Lubrication section) and Nissan global parts catalogues — the VQ35DE-equipped 2006 Maxima uses a sealing washer on the engine oil sump (drain) plug. Parts listings call up a 14 mm crush-type sump plug washer (commonly supplied under Nissan gasket part numbers such as 11026-01M02 or superseded equivalents). That means a sump plug washer is absolutely relevant and fitted on this vehicle.

The sump plug washer’s whole job is to seal the drain plug against the alloy sump so engine oil doesn’t seep past the threads. It’s a soft, single-use crush washer — usually aluminium or copper — that deforms as the plug is tightened. That controlled “crush” fills tiny surface imperfections, giving a reliable, leak-free seal without needing thread sealant.

For the 2006 Maxima, replacing the sump plug washer at every oil change is recommended practice. Reusing a crushed washer risks weeping oil, drips on the driveway, and contaminants on the underside of the car. Beyond the mess, even a slow leak can drop oil levels over time, which isn’t ideal for a VQ-series engine that likes fresh, clean oil. A new washer costs very little and helps the drain plug reach the correct clamping load at the specified torque.

During a service, a technician will drop the oil, discard the old washer, wipe the plug and sump sealing face, fit a new washer, and reinstall the plug. The plug should be torqued to the factory spec in the service manual — firm, not gorilla-tight — to avoid distorting the pan threads. If the sump face is nicked, lightly dressing it flat before refitting helps the new washer seal properly.

• Use the correct size: 14 mm ID crush washer for Nissan applications of this era.
• Material: aluminium is typical, copper is fine if sized correctly.
• Replace at every oil change (roughly every 10,000–15,000 km, depending on schedule and conditions).
• Keep a couple of spares in the glovebox or tool tray for hassle-free services.
• If any oil mist appears after a change, recheck torque and washer fitment promptly.

Look after the little washer and the Maxima’s sump stays clean, dry, and drama-free between services.

Popular questions about 2006 Nissan Maxima sump plug washers

What size sump plug washer does a 2006 Nissan Maxima use?
Most 2006 Maxima models with the VQ35DE use a 14 mm inside-diameter crush washer designed for the Nissan drain plug. Genuine Nissan gaskets (e.g., 11026-01M02 or later supersessions) or quality aftermarket equivalents in the same size will do the job.

Should the sump plug washer be replaced at every oil change?
Yes. It’s a single-use crush washer. Once compressed, it won’t spring back reliably, so it’s best practice to install a fresh washer each service to maintain a proper seal and avoid slow leaks.

Aluminium vs copper — which washer is better?
Either works if the dimensions match the Nissan plug and sump. Aluminium is the common OE style and crushes slightly more easily, while copper is durable and reusable in some applications, though for this Maxima it’s still treated as single-use to ensure consistent sealing.