Parts for your 2014 Honda Civic-Sump plug washers

2014 Honda Civic sump plug washers

Based on Honda’s own technical literature, the 2014 Honda Civic does use a sump plug washer (also called an oil drain plug gasket). The Honda Service Manual for this generation (engine lubrication section) specifies “always use a new drain plug washer,” and the Owner’s Manual maintenance chapter for the Civic instructs replacement of the washer at each engine oil change. Honda’s parts catalog lists a 14 mm drain plug washer (commonly referenced as Honda P/N 94109-14000) for the 2014 Civic’s engine oil pan. Together, these sources confirm the part is fitted and relevant on this model.

The sump plug washer’s whole job is to seal the drain bolt to the alloy sump so oil doesn’t weep out after a service. It’s a soft aluminium crush washer that deforms slightly when torqued, taking up tiny imperfections between the bolt head and the sump face. That single-use crush is why Honda calls for a new one each time—once compressed, it won’t seal as reliably again. Reusing it can lead to a slow drip, oily undertrays, and the whiff of hot oil after a drive.

For owners in Australia and New Zealand, the routine is straightforward: whenever the engine oil is changed on a 2014 Civic (1.8 petrol, and other trims where applicable), fit a fresh 14 mm crush washer and torque the drain bolt correctly. Honda specifies about 39 N·m (29 lb-ft). Over-tightening in an attempt to “stop a leak” risks stripping the sump threads, under-tightening can allow seepage. Sticking with genuine or quality aftermarket aluminium washers helps avoid galvanic issues and ensures the washer crushes as designed.

Good practice during servicing includes:

• Wipe the sump’s sealing face clean so the new washer beds in properly.
• Confirm the old washer isn’t stuck to the sump before refitting the bolt.
• Torque the bolt with a torque wrench—don’t guess by feel.

It’s smart to keep a few spare washers in the glovebox or with the oil filter kit. If a previous service reused the washer, watch for tell-tales like a damp drain bolt, spots on the driveway, or oil smell after a run. Replace the washer at the next opportunity and torque correctly—cheap insurance for a tidy, leak-free Civic.

Technical sources referenced: Honda Service Manual (2012–2015 Civic, Engine Lubrication—Drain Bolt and Washer, “always use a new washer”), Honda Owner’s Manual (2014 Civic, Maintenance—Engine Oil, replace drain plug washer at oil change), Honda Electronic Parts Catalogue listing for 14 mm drain plug washer (e.g., 94109-14000).

Popular questions about 2014 Honda Civic sump plug washers

What size washer does a 2014 Honda Civic use?
The 2014 Civic uses a 14 mm aluminium crush washer for the engine oil drain plug. It’s commonly listed by Honda as P/N 94109-14000 and is designed to be replaced every oil change to maintain a proper seal.

How often should the sump plug washer be replaced?
Every time the engine oil is changed or the drain bolt is removed. The washer is a single-use crush type, reusing it increases the chance of weeping and drips.

What torque should the drain plug be tightened to?
Torque the drain bolt to about 39 N·m (29 lb-ft). This allows the washer to crush correctly without over-stressing the sump threads, giving a reliable, leak-free seal.