Parts for your 2002 Honda Civic-Sump plug washers

2002 Honda Civic sump plug washers

For the 2002 Honda Civic, a sump plug washer is absolutely fitted and required. Honda’s factory literature backs this up: the Honda Civic Service Manual (2001–2005, Engine Lubrication section) specifies replacing the drain plug washer at every oil change, and the Honda parts catalogue lists a 14 mm aluminium crush washer (commonly referenced as Honda P/N 94109-14000) for the engine oil drain plug. The manual also calls for tightening the drain plug to 29 lbf·ft (39 N·m). That’s the combo designed to seal the sump properly without drama.

What does the sump plug washer do? It’s a soft, single‑use seal that crushes slightly as the drain plug is torqued up, forming a reliable seal between the plug and the sump. On an alloy sump like the Civic’s, the right washer matters heaps: it prevents weeping leaks and means the plug can be tightened to spec without chewing up the threads or needing goopy sealants.

As part of regular servicing on a 2002 Civic, the washer should be replaced at every oil change—simple as that. Pop the bonnet, drain the oil, fit a new 14 mm aluminium crush washer on a clean drain plug, and tighten to 39 N·m with a torque wrench. A 17 mm socket or spanner usually fits the drain bolt head. Skipping the washer or reusing a flattened one invites seepage, under‑car drips, or the temptation to over‑tighten the plug, which can strip the sump. No one wants that bill.

Signs it’s time for a fresh washer (besides being mid‑service):

• Oil mist or drips from the plug after a recent change.
• Washer looks gouged, kinked, or dead flat.
• Needing extra grunt on the spanner to stop a weep.

Stick with aluminium crush washers in the correct 14 mm size. Copper can seal, but Honda specifies aluminium for this model, and it crushes predictably at the factory torque. Avoid sealant or tape, if the mating face is clean and the washer’s new, it’ll seal sweet as. Keep a small pack of washers on hand so every service is no fuss, and always refit the plug by hand first to avoid cross‑threading. That way, the Civic stays tidy under the car and happy on the road.

What size sump plug washer does a 2002 Honda Civic use?

It uses a 14 mm aluminium crush washer on the engine oil drain plug. The drain plug typically takes a 17 mm socket or spanner, and Honda’s spec calls for 29 lbf·ft (39 N·m) torque with a new washer installed.

How often should the sump plug washer be replaced on a 2002 Civic?

Every oil change. The Honda service manual instructs replacing the washer each time the oil is drained, ensuring a fresh crush and a proper seal without over‑tightening the plug.

Can a copper washer be used instead of aluminium?

In a pinch, a same‑size copper washer may seal, but Honda specifies aluminium for consistent crush at the correct torque on the Civic’s alloy sump. For best results—and to avoid leaks—stick with the OEM‑style aluminium washer.