Parts for your 2022 Honda Civic-Sump plug washers

2022 Honda Civic sump plug washers

Yes, the 2022 Honda Civic uses a sump plug washer (also called a drain plug crush washer), and it’s absolutely relevant to routine servicing. Honda’s service literature for the 11th‑gen Civic notes replacing the drain plug washer at each engine oil change, and the Honda parts catalogue lists a 14 mm aluminium crush washer (commonly referenced as Honda P/N 94109‑14000) for the oil drain plug. The owner’s manual oil change procedure also calls out fitting a new washer and tightening the plug to the specified torque.

The sump plug washer’s job is simple but critical: it deforms once when the plug is torqued, creating a gas‑ and oil‑tight seal between the plug and the alloy sump. That crush action accommodates tiny imperfections in the mating surfaces and keeps thermal cycling, road vibration, and pressure changes from weeping oil. It also helps protect the sump face from galling under the plug head.

Because it’s a single‑use crush component, the washer should be replaced every time the oil is changed. Reusing a flattened washer risks seepage that can leave dampness around the plug, or a slow drip that dirties the driveway and, worse, lowers engine oil level. During servicing, the plug threads and sump face should be wiped clean, a new 14 mm aluminium washer fitted, and the plug tightened to the factory torque (around 39 N·m / 29 lbf·ft, always follow the figure in the Civic’s service info). Over‑tightening doesn’t “seal better” and can distort the washer or stress sump threads.

While copper washers exist, Honda specifies an aluminium crush type for this model. Sticking with genuine or a quality equivalent that matches the 14 mm inner diameter and correct thickness is the go. If the plug head is burred or the threads are tired, replace the plug as well—washers can’t compensate for damaged hardware.

• Signs it needs attention: fresh oil film around the plug, a drip after a hot run, or a washer that’s visibly grooved or flattened.
• Good practice: replace the washer at every service interval, use a torque wrench, and avoid sealants unless explicitly specified by Honda (they aren’t for this joint).

Popular questions

What size sump plug washer does a 2022 Honda Civic use?
The 2022 Civic uses a 14 mm aluminium crush washer designed for the engine oil drain plug. Honda’s parts listings commonly show the 14 mm washer (e.g., 94109‑14000). It’s a single‑use seal that should be replaced at each oil change.

How often should the sump plug washer be replaced?
Every oil change. The washer is made to deform once to seal, so reusing it can lead to minor leaks. Swapping it at service time is inexpensive insurance against seepage.

What’s the correct torque for the drain plug?
Honda service information for the 2022 Civic specifies a torque around 39 N·m (29 lbf·ft). Always confirm against the vehicle’s service manual for the exact spec for the engine variant, then tighten with a torque wrench.