Parts for your 2002 Honda Odyssey-Sump plug washers

2002 Honda Odyssey sump-plug-washers: what they do and when to replace them

For the 2002 Honda Odyssey (J35A V6), a sump-plug-washer is absolutely used and relevant. Honda’s factory service manual for the 1999–2004 Odyssey family specifies an aluminium crush washer on the engine oil drain (sump) bolt and instructs replacing it at every oil change, with the drain bolt tightened to 39 N·m (29 lbf·ft). Honda’s parts catalogue lists the 14 mm aluminium crush washer (commonly referenced as 94109-14000) for the sump plug on this model. Aftermarket repair manuals echo the same advice: new washer, correct torque, no leaks.

On this Odyssey, the sump-plug-washer is a soft, single-use seal that deforms slightly when the bolt is torqued. That controlled “crush” fills tiny imperfections between the sump and bolt head, creating a reliable oil-tight seal. Re-using a crushed washer risks seepage, over-tightening, or thread damage to the alloy sump—none of which anyone wants on a family hauler.

As part of routine servicing of a 2002 Honda Odyssey, replacing the sump-plug-washer is a quick, low-cost step that prevents drips on the driveway and preserves the sump’s sealing face.

• Use the correct size: a 14 mm ID aluminium crush washer for the Odyssey’s M14 drain bolt (17 mm bolt head).
• Always fit a fresh washer at each engine oil change, keep a few spares in the glovebox.
• Torque the drain bolt to 39 N·m (29 lbf·ft). Don’t swing off the spanner—over-tightening can distort the sump face or strip threads.
• Wipe both mating surfaces clean before installing the new washer and bolt.
• If there’s any weeping after replacement, check for a scarred sump face or a nicked bolt, replace the bolt if needed.

While copper or fibre washers exist, Honda specifies aluminium for this application, which crushes predictably at the correct torque. It’s a tiny part doing an important job—saving oil, keeping things tidy, and protecting the sump. For anyone servicing a 2002 Odyssey, swapping the sump-plug-washer is a simple habit that pays off every time.

Popular questions about 2002 Honda Odyssey sump-plug-washers

What size sump plug washer fits a 2002 Honda Odyssey?
It takes a 14 mm aluminium crush washer on the engine oil drain bolt (M14 x 1.5 thread, 17 mm head). Honda commonly supplies this as part number 94109-14000 in dealer packaging. The correct size and material ensure proper crush and a leak-free seal at the specified torque.

Do you really need to replace the washer at every oil change?
Yes—Honda service literature calls for a new crush washer each time. They’re designed to deform once, re-using them can cause slow weeps or lead to over-tightening as people chase a seal. Given how inexpensive they are, it’s cheap insurance for the Odyssey’s alloy sump.

What’s the correct torque for the sump plug on this model?
Tighten the engine oil drain bolt to 39 N·m (29 lbf·ft). That torque, together with a new aluminium washer, achieves the right amount of crush without risking damage. If a torque wrench isn’t handy, tighten snugly and then a small additional pull—never heave on it.