Parts for your 2007 Honda Fit-Sump plug washers

2007 Honda Fit (Jazz) sump plug washers — what they do and when to replace them

Yes, the 2007 Honda Fit (GD/Jazz) uses a sump plug washer — a 14 mm aluminium crush washer on the engine oil drain bolt. Honda service literature for the 2001–2008 Jazz/Fit (Engine Lubrication section), the 2007 Owner’s Manual, and Honda Genuine Parts catalogues specify replacing the drain plug washer at each oil change, the common listing is the 14 mm drain plug gasket (often shown as Honda p/n 94109‑14000). Those same sources quote the drain bolt torque at around 39 N·m (29 lbf·ft).

On this model, the sump plug washer’s job is simple but crucial: it deforms slightly as the plug is tightened, creating a reliable seal between the plug and the alloy sump. That soft aluminium ring absorbs minor surface imperfections, handles heat cycling, and helps prevent weeping oil or plug loosening. It also protects the sump’s sealing face from damage by spreading the load evenly, so the sump threads and face aren’t punished every time the bolt is snugged down.

Because it’s a crush washer, it’s designed for single use. Once compressed, it won’t spring back or seal the same way again. Reusing an old washer is a common cause of slow leaks, drips on the driveway, or the need to overtighten the plug to chase a seal. That’s why Honda’s workshop procedures call for a new 14 mm aluminium washer whenever the oil is changed.

Best practice on a 2007 Fit/Jazz is straightforward: drain the oil, wipe the sump face clean, fit a new genuine-style 14 mm aluminium washer to the plug, and torque the plug to about 39 N·m. No thread sealant or tape is needed — the washer does the sealing. If the plug’s head is rounded or the magnet is damaged, replace the plug as well. Owners in Australia and New Zealand who change oil every 10,000 km or 12 months should keep a few spare washers on hand, they’re inexpensive insurance against leaks.

• Replace the washer at every oil change (single-use crush type).
• Tighten the drain plug to about 39 N·m, don’t overtighten.
• Use the correct 14 mm aluminium washer, avoid sealants or PTFE tape.
• After the first drive, glance under the sump to confirm it’s bone dry.

What size washer does a 2007 Honda Fit use?
It takes a 14 mm aluminium crush washer that fits the drain bolt shoulder. Honda parts catalogues commonly list it as the 14 mm drain plug gasket (often referenced as 94109‑14000). If buying aftermarket, match the inner diameter and choose aluminium to suit Honda’s spec.

How often should the sump plug washer be replaced, and what torque should be used?
Replace it at every oil change. It’s a single-use crush washer. Tighten the drain plug to about 39 N·m (29 lbf·ft) on the 2007 Fit/Jazz — enough to seal without stripping threads. No sealant needed.

Can a copper washer be used instead of aluminium?
A quality 14 mm copper crush washer can work in a pinch, especially if it’s annealed, but Honda specifies aluminium for consistent sealing on the alloy sump. For the least fuss and best chance of a first-time seal, stick with an aluminium 14 mm washer.