Parts for your 2012 Honda Civic-Sump plug washers

2012 Honda Civic sump-plug-washers

Yes, a 2012 Honda Civic does use a sump-plug-washer. Referencing Honda’s technical sources: the Honda 2012 Civic Owner’s Manual and the Honda Service Manual specify replacing the engine oil drain plug washer at each oil change, and the Honda dealer Electronic Parts Catalogue lists the genuine “Washer, Drain Plug (14 mm)” as P/N 94109-14000. The service spec also calls for tightening the drain bolt to 39 N·m (29 lb·ft) with a new washer fitted.

On this model, the sump-plug-washer (often called an oil drain plug crush washer) is a single-use aluminium ring that seals the sump plug to the alloy oil pan. When the plug is torqued, the washer deforms slightly to fill micro-gaps, creating a reliable, leak-free seal. Reusing a flattened or scored washer can let oil seep out over time, so it’s a small, inexpensive part that does a big job in keeping the engine tidy and the driveway clean.

For owners servicing a 2012 Honda Civic in Australia or New Zealand, it’s smart practice to replace the sump-plug-washer at every oil change—typically every 10,000 km or 12 months, or as per the vehicle’s maintenance minder. Genuine or quality equivalent 14 mm aluminium crush washers are recommended. Avoid copper washers unless specified, as the Civic’s factory spec is aluminium, and that’s what the sealing surfaces are designed around.

Handy servicing pointers for the Civic’s sump-plug-washers:

• Always fit a fresh 14 mm aluminium crush washer (Honda P/N 94109-14000 or quality equivalent) with the drain plug.
• Clean the sump’s sealing face and the plug threads before refitting.
• Tighten the plug to 39 N·m (29 lb·ft) using a torque wrench—over-tightening can strip threads in the alloy pan.
• After refilling with the correct grade oil, run the engine briefly, then check for weeping around the plug.

Tell-tale signs a washer needs replacing include a shiny, flattened profile, gouges from previous use, or any oil misting under the plug. Given the low cost, replacing it every time is cheap insurance against leaks, environmental mess, and the hassle of rework. For anyone chasing dependable DIY servicing on a 2012-honda-civic, keeping a small stash of sump-plug-washers on the shelf makes every oil change smoother.

Does a 2012 Honda Civic need a sump-plug-washer?

It does. Honda’s Service Manual and Owner’s Manual both note the drain plug uses a crush-type washer that should be replaced at each oil change to ensure a proper seal.

What size is the sump-plug-washer on a 2012 Honda Civic, and what’s the torque?

The Civic uses a 14 mm aluminium crush washer (Honda P/N 94109-14000). Tighten the drain plug to 39 N·m (29 lb·ft) with a new washer fitted.

How often should the sump-plug-washer be replaced on a 2012 Honda Civic?

Replace it at every oil change. It’s a single-use crush washer, reusing it can lead to leaks or over-tightening to compensate for a poor seal.