Typically a 14mm socket fits the oil drain plug on most Honda Fit models, though certain years or markets may use a 17mm head. Verify with your owner's manual or by inspecting the plug itself before attempting a change.
Common sizes and when they apply
Engineers and service guides show two sizes are commonly encountered on Fits. The following summarizes where each size is most likely to appear and how to confirm before you loosen anything.
- 14 mm socket: This is by far the most common size for the Honda Fit’s oil drain plug on the 1.5L engine found in many model years. If your car is a standard US-market variant, this is likely the one you’ll need.
- 17 mm socket: Some markets or higher-mileage variants (and certain model years) use a larger hex head on the drain plug. If you try 14 mm and the plug won’t turn or the head is visibly larger, switch to 17 mm.
In either case, use a properly sized, clean socket and a torque wrench to avoid stripping threads. Always hand-tighten before final torque to prevent cross-threading.
How to verify the correct size for your specific Honda Fit
To ensure you’re using the right tool for your exact vehicle, follow these steps: check the owner's manual for the drain plug specification; inspect the plug head with a flashlight to identify the size etched on it or simply try a 14 mm socket; if it fits too loosely or slips, try 17 mm; consult a dealership or service manual for your year and trim if you’re unsure.
Other considerations for a safe oil change
Beyond the drain plug socket, gather a compatible oil filter wrench, an oil catch pan, and the correct oil grade and quantity for your Fit. The 1.5L engine typically takes about 3.7–4.2 quarts when changing the oil and filter, but verify for your exact model year and manual.
Summary
For the Honda Fit, the typical drain plug socket size is 14 mm, with 17 mm appearing on some models or markets. Always confirm via the owner's manual or a quick plug-head inspection to avoid damage during an oil change.