Parts for your 2006 Honda Civic-Sump plug washers

2006 Honda Civic sump plug washers

For the 2006 Honda Civic, a sump plug washer is absolutely relevant and fitted from factory. Technical sources including the Honda 2006–2011 Civic Service Manual (Lubrication section), the Owner’s Manual oil change guidance, and Honda’s Electronic Parts Catalogue specify an aluminium crush washer used on the engine oil drain (sump) plug. The commonly listed genuine part is a 14 mm aluminium crush washer (Honda P/N 94109-14000), with the drain plug torque specified at about 39 N·m (29 lbf·ft). These references make it clear the washer is intended to be replaced at each oil change to maintain a proper seal.

On a 2006 Honda Civic, the sump plug washer does the quiet, crucial job of sealing the drain bolt to the alloy sump. It’s a soft, deformable aluminium “crush” ring that compresses just enough as the plug is torqued, filling microscopic gaps and stopping weeps or outright leaks. Because it crushes to form that seal, it’s treated as a single‑use item.

During servicing, it’s good practice to fit a new washer every time the oil is changed. Reusing a flattened washer can lead to a damp sump, driveway spots, or—worse—an under‑filled engine. A fresh 14 mm aluminium washer is inexpensive insurance, and it lets the drain plug be tightened to the correct spec without over‑doing it.

• Purpose: Provides a fluid‑tight seal between the sump plug and the sump surface by controlled deformation.
• Material: Soft aluminium, chosen to crush and seal without damaging the sump.
• Spec: Typically M14 washer (Honda P/N 94109-14000) for 2006 Civic engines, torque the plug to about 39 N·m.

Service tips that make life easier under the bonnet:

1. Always have a couple of spare washers on hand with your oil and filter—too easy to misplace one mid‑service.
2. Wipe the sump sealing face clean before refitting. Any grit compromises the seal.
3. Do not use thread tape or sealant, the washer does the sealing, not the threads.
4. Tighten with a torque wrench where possible. Overtightening risks stripping threads in the alloy sump.
5. After the first warm run, have a quick look for any weeping and nip to spec if needed.

If there’s seepage around the plug after an oil change, the usual culprits are a reused or incorrect‑size washer, debris on the sealing face, or an under/over‑torqued plug. Sticking with a genuine‑spec 14 mm aluminium crush washer and the right torque keeps the 2006 Civic tidy and leak‑free.

Popular questions

What size sump plug washer does a 2006 Honda Civic use?
Most 2006 Honda Civic variants use a 14 mm aluminium crush washer on the engine oil drain plug. The commonly cited Honda genuine part number is 94109-14000. Always confirm against the vehicle’s VIN or parts catalogue if the car has a non‑standard sump or replacement pan.

How often should the sump plug washer be replaced on a 2006 Civic?
Replace it at every oil change. The washer is designed to crush once to form a perfect seal, reusing a flattened washer is a common cause of slow weeps. Given the low cost, fitting a new washer each service is the smart move.

What’s the correct torque for the 2006 Civic sump plug?
The typical spec listed in Honda workshop literature is about 39 N·m (29 lbf·ft) for the drain plug. Tighten to spec on a clean sealing surface with a new washer. Avoid over‑tightening—let the crush washer do the sealing.