Parts for your 2016 Honda Odyssey-Sump plug washers

2016 Honda Odyssey sump plug washers

Based on Honda’s own technical literature, the 2016 Honda Odyssey does use a sump plug washer (also called a crush washer). The Honda Odyssey 2011–2017 Service Manual (Engine Lubrication – Engine Oil Replacement) instructs technicians to fit a new drain plug washer whenever the oil is changed, and the 2016 Odyssey Owner’s Manual reiterates replacing the washer at each engine oil service. Honda’s Electronic Parts Catalogue for the 2016 Odyssey lists the aluminium 14 mm washer (part number 94109-14000) for the engine oil drain plug, confirming it’s a relevant and fitted component.

The sump plug washer on a 2016 Honda Odyssey is a small, inexpensive bit of kit that does a big job. Sitting under the sump plug bolt, the soft aluminium washer deforms slightly as the plug is tightened, creating a proper seal between the plug and the sump. That crush action keeps engine oil where it belongs and helps the sump plug hold its torque without galling the sump. On the Odyssey’s V6, Honda specifies replacing this 14 mm aluminium washer at every oil change. It’s a cheap safeguard against weeping seals, oil drips on the driveway, and the risk of the plug loosening over time.

For routine servicing, the advice is simple: always have a fresh washer ready. After draining the oil, clean the sump plug threads, slip on a new washer (bevel or smooth side orientation isn’t critical on Honda’s flat aluminium type), then reinstall and torque the plug correctly—Honda specifies about 39 N·m (29 lb·ft). Over-tightening can crush the washer too far or harm the sump threads, under-tightening can allow a slow leak. If a previous service reused the washer, it may already be work-hardened and won’t crush evenly the next time, so replace it rather than risk a seep.

Drivers or workshops should also keep an eye out for tell-tales that the washer needs attention: a faint oil halo around the plug, the smell of hot oil after a run, or a single drop forming under the sump overnight. If any of these pop up, it’s smart to replace the washer and re-torque the plug with a new one fitted. For peace of mind across Aussie and Kiwi conditions—city runs, school drop-offs, or long family trips—the few dollars spent on a fresh washer each service is well worth it.

• Washer type: Aluminium crush washer
• Size: 14 mm (Honda part 94109-14000)
• Torque spec: 39 N·m (29 lb·ft) on the sump plug
• Replace: At every engine oil change

Popular questions

Does a 2016 Honda Odyssey actually need a new sump plug washer every service?
Yes. Honda’s service guidance calls for a new washer at each oil change. The aluminium crush washer is designed for one-time use so it can deform and seal properly. Reusing it risks small leaks and inconsistent torque retention on the plug.

What size washer fits the 2016 Odyssey sump plug, and what’s the correct torque?
The Odyssey uses a 14 mm aluminium crush washer (Honda 94109-14000). Tighten the sump plug to about 39 N·m (29 lb·ft). Using a torque wrench helps avoid over-tightening, which can damage threads or over-crush the washer.

How can someone tell if the sump plug washer needs replacing outside the normal service interval?
Look for a light oil smear or drip under the sump, or the smell of hot oil after parking. If there’s any sign of weeping around the plug, fit a new washer and re-torque the plug to spec.