The engine oil drain plug on most Honda Pilot models uses M14 x 1.5 thread and a 14 mm hex head.
In this article, we explain the typical size, how to identify it on your year, and how to confirm the exact specification for your vehicle. We also outline steps to verify and replace the washer if needed.
Model-year guidance
Across Honda Pilot generations, the drain plug is typically the same size, but variations can occur by production year or engine variant.
- 2003–2008 Honda Pilot (3.5L J35A): typically M14 x 1.5 thread with a 14 mm hex head.
- 2009–2015 Honda Pilot (J35A/J35Z): typically M14 x 1.5 thread with a 14 mm hex head.
- 2016–present Honda Pilot (3.5L): typically M14 x 1.5 thread with a 14 mm hex head.
In short, most Pilot models share the M14 x 1.5 drain plug with a 14 mm head, but always confirm for your exact year and engine using the owner's manual or by measuring the plug.
How to confirm on your vehicle
To be certain about the drain plug size on your exact Honda Pilot, follow these steps:
- Locate the engine oil pan and the drain plug at the bottom of the pan.
- Inspect the head to determine whether a 14 mm socket fits snugly, which is typical for the standard plug.
- Try fitting a 14 mm socket or wrench; if it fits, that is the correct size. If it doesn’t, measure the flats or consult the service manual for your year.
- Check the owner's manual or service bulletin for your year and engine to confirm the specification.
- When replacing the drain plug, use a new washer or copper crush washer as recommended.
By confirming with the manual or measurement, you ensure the correct plug size and avoid cross-threading or leaks.
Summary
For most Honda Pilot models, the engine oil drain plug uses an M14 x 1.5 threaded plug with a 14 mm hex head. Always verify against your exact year and engine by checking the owner's manual or the plug itself, and replace the washer when reassembling to prevent leaks.