The oil drain plug on most Honda Accords is typically M14x1.5 with a 17 mm hex head, but variations by year and engine are possible. Check your exact model’s manual or inspect the plug to be sure.
Overview of the drain plug size
Understanding the drain plug size depends on the engine family and model year. For modern Honda Accords, the standard is usually a 14 mm diameter thread with a 1.5 mm pitch (M14x1.5) and a 17 mm hex head, but some older or unusual variants may differ. Always confirm with the owner's manual or the service manual for your specific year and engine.
Typical sizes across common Accord generations
The following guidance covers the most commonly encountered configurations in recent decades. Always verify against your exact vehicle specification.
- Most modern Accord engines use M14 x 1.5 thread with a 17 mm hex head for the oil drain plug.
- Some older or less common engines may use alternative thread sizes (such as M12 x 1.25) or different head configurations; these cases are rare in contemporary models.
Regardless of year, verifying the exact specification for your vehicle is the safest approach, either by checking the manual or inspecting the existing plug.
How to confirm your drain plug size
To avoid cross-threading or leaks, confirm the precise size before purchasing or installing a replacement plug.
- Check the owner's manual or service manual for the official oil drain plug specification (thread size and pitch).
- Inspect the drain plug on your engine: measure the thread diameter and pitch with a thread gauge, and note the head size to determine the correct socket.
- If you’re unsure, bring the plug to an auto parts store and have staff help match the size, or consult your Honda dealer for the exact specification for your VIN.
- When replacing, use the correct threaded plug and torque per Honda’s guidelines to ensure a proper seal and safe operation.
Confirming the size before you replace the plug helps prevent damage and ensures a reliable seal when you service the oil pan.
Summary
For most Honda Accord models, the oil drain plug is typically M14x1.5 with a 17 mm hex head, but there are year- and engine-specific exceptions. Always verify with the owner’s manual or a dealer, or by inspecting the existing plug, to ensure you use the correct size and avoid cross-threading or leaks. Accurate identification helps ensure a clean, safe oil change every time.