Parts for your 2005 Honda Accord-Sump plug washers

2005 Honda Accord sump plug washers: what they do and when to replace them

Technical sources confirm the 2005 Honda Accord does use a sump plug washer (also called an engine oil drain plug crush washer). The Honda Accord 2003–2007 Service Manual (Engine Oil Replacement), the 2005 Owner’s Manual maintenance notes, and Honda’s electronic parts catalogue all specify an aluminium crush washer for the drain plug, commonly listed as 14 mm (Honda part number 94109-14000). Those documents instruct that the washer be replaced at each oil change to prevent leaks.

On a 2005 Accord, the sump-plug-washers is a small, single-use aluminium ring that sits under the head of the sump plug. When the plug is torqued, the washer “crushes” slightly to create a fluid-tight seal against the sump. That crush action is the whole point: it stops weeping and drips, allows the correct clamping force at a sensible torque, and protects the alloy sump face from damage.

As part of routine servicing, replacing the sump-plug-washers each oil change is cheap insurance. The washer hardens once it’s crushed, so reusing it invites slow leaks, over-tightening, or both. Honda’s guidance pairs a fresh washer with the correct torque. For the 2005 Accord (both four-cylinder and V6), the typical spec is 39 N·m (29 lbf·ft), always confirm against the vehicle’s service data.

Owners and workshops in Australia and New Zealand will usually keep these on hand because they’re consumables. Aluminium is the OEM choice for Honda, though quality copper crush washers can work if sized correctly. The OEM 14 mm spec is the safe bet for fit and sealing.

• Before refitting the plug, check the old washer isn’t stuck to the sump—it can cling there after the plug comes out.
• Slip a new 14 mm aluminium crush washer onto the clean plug.
• Refit and torque the plug to 39 N·m. No need to lean on the spanner—let the washer do the sealing.
• After refilling, run the engine, then peek under the bonnet and underneath for any fresh oil around the plug area. Recheck for weeps after the next drive.

Tell-tales that the washer needs attention include a damp plug head, a faint oil halo on the sump, or a washer that’s visibly flattened, gouged, or cocked. Swapping it at every oil change keeps the Accord tidy and leak-free.

Popular questions

Does a 2005 Honda Accord actually need a sump plug washer?
Yes. Honda’s 2003–2007 Accord service literature and the 2005 Owner’s Manual direct replacing the aluminium crush washer at each oil change. The washer provides the seal, so skipping it risks seepage even when the plug is tight.

What size sump plug washer does a 2005 Accord use?
The common OEM fitment is a 14 mm aluminium crush washer (Honda part number 94109-14000). It matches the drain plug’s sealing land and crushes correctly at the specified torque.

What torque should the sump plug be tightened to?
For most 2005 Accord engines, 39 N·m (29 lbf·ft) is specified when using a new crush washer. This achieves a proper seal without stressing the sump threads. Always verify against the exact engine variant’s service spec.