Parts for your 2012 Honda Elysion-Sump plug washers

2012 Honda Elysion sump plug washers — what they do and when to replace them

Yes, the 2012 Honda Elysion uses a sump plug washer (also called an oil drain plug gasket). Honda’s service procedures for K-series 2.4L and J-series V6 engines instruct fitting the drain bolt with a new washer at each oil change, and Honda’s parts catalogues list a replaceable aluminium “Washer, Drain Plug (14 mm)” for Elysion variants of this model year.

• Honda service literature (Engine Lubrication/Oil Change procedures) specifies installing the drain bolt with a new washer.
• Honda Electronic Parts Catalogue (EPC) entries for Elysion model year 2012 list an aluminium 14 mm drain plug washer used with the engine oil pan drain bolt.
• Honda OEM part commonly referenced: 14 mm aluminium crush washer (often sold under Honda P/N 94109-14000 across many Honda petrol engines, including those fitted to Elysion).

For the 2012 Honda Elysion, the sump plug washer is a small, single-use aluminium ring that seals the drain bolt to the sump. When the bolt is tightened, the soft metal crushes slightly to form a proper seal. That crush action is why it’s considered a one-and-done item: once compressed, it won’t spring back to seal the same way again.

As part of routine servicing, it’s smart to keep fresh washers on hand and swap one in at every oil change. It helps prevent those annoying weeps that leave oily spots on the driveway and, over time, can attract dust and grime on the underside of the vehicle. Reusing a washer can tempt over-tightening to “chase” a seal, which risks damaging threads in the alloy sump — not a repair anyone wants to fund.

Best practice on a 2012 Elysion is simple:

• Use a quality 14 mm aluminium crush washer (OEM-style is ideal).
• Wipe the sump face and drain bolt clean, fit the new washer flat against the bolt head.
• Tighten the drain bolt to the factory spec, don’t muscle it past snug-plus-torque.
• After refilling oil and a short run, check for any sign of weeping and nip up only if needed.

Copper washers exist, but Honda designed these engines around aluminium crush washers, which give the right “feel” at the correct torque. If the sump face is nicked or the old washer has bonded to the pan, clean the surface carefully so the new washer can do its job. Done right, a new washer every service keeps the Elysion tidy, leak-free and exactly as Honda intended.

What size sump plug washer does a 2012 Honda Elysion use?

It typically uses a 14 mm internal-diameter aluminium crush washer, the common Honda spec for these engines. The OEM-style washer is widely available and is the safest bet for a perfect seal and the correct torque feel.

How often should the sump plug washer be replaced?

Replace it at every oil change. The washer is designed to deform once, reusing it can cause weeping or require excess tightening. New washer each service, no dramas.

What happens if the washer is reused or missing?

Expect slow seepage, occasional drips, and possibly stripped threads from over-tightening to compensate. Over time that can mean a messy underbody and avoidable repairs.