Parts for your 2001 Honda Odyssey-Sump plug washers

2001 Honda Odyssey sump plug washers

Yes — the 2001 Honda Odyssey uses a sump plug washer on the engine oil drain bolt. Honda’s 2001 Odyssey Owner’s Manual instructs replacing the drain bolt washer at each oil change, and the factory Service Manual (1999–2004, Helm) specifies the crush-washer style seal used with the 14 mm drain plug, torqued to approximately 39 N·m (29 lbf·ft). Honda’s parts catalogue lists the 14 mm aluminium drain plug washer commonly supplied under Honda’s standard drain plug gasket part line for this model.

The sump plug washer on a 2001 Odyssey is a single-use, soft aluminium crush washer. Its whole job is to deform slightly as the plug is tightened, creating a reliable seal between the plug head and the sump face. That little ring prevents weeping oil, helps maintain correct torque without over-tightening, and protects the alloy sump from galling. It’s a cheap consumable, but it saves headaches — and driveways — from oil drips.

Honda’s guidance is to fit a new washer every oil change. In Aussie and Kiwi conditions, that typically means swapping it out whenever the oil and filter are done — usually around 10,000 km or as per the service schedule. Reusing a flattened washer can lead to seepage, plug loosening, or the temptation to swing the spanner harder, which risks stripping threads. A fresh washer lets the plug reach the right clamping load at the specified 39 N·m without drama.

When servicing, clean the sump sealing face, thread the plug in by hand to avoid cross-threading, fit a new 14 mm aluminium crush washer, and torque it accurately. If a torque wrench isn’t handy, snug plus a measured nip is the go — but avoid overcooking it. After the first heat cycle, have a quick look under the bonnet and check for any oil misting around the plug area. No sheen? You’re golden.

If the plug’s been over-tightened in the past, inspect the threads and washer seat. Replace a rounded or scored plug rather than trying to resurrect it. Keep a few genuine-spec washers on the shelf, they cost peanuts and keep the Odyssey’s J35 V6 happy and dry. It’s a small part that delivers big peace of mind across countless kilometres.

References: 2001 Honda Odyssey Owner’s Manual (Changing Engine Oil and Filter), Honda Odyssey 1999–2004 Service Manual (Helm Inc.), Lubrication section, Honda Electronic Parts Catalogue listing for 14 mm engine oil drain plug washer.

Popular questions

What size sump plug washer does a 2001 Honda Odyssey use?
For the engine oil drain, it uses a 14 mm aluminium crush washer designed to deform once and seal tight. Stick with a Honda-spec washer to ensure proper fit and sealing against the sump face.

How tight should the sump plug be on a 2001 Odyssey?
Torque the drain plug to about 39 N·m (29 lbf·ft) with a new crush washer installed. That setting delivers the right clamping force without stressing the sump or distorting the plug.

Can the sump plug washer be reused?
Best not. The washer is single-use, once crushed, it won’t seal properly again. Reusing it often leads to weeping oil or overtightening. Fit a fresh washer at every oil change.