What size is the oil drain plug on a Honda?
There isn’t a single universal size for Honda vehicles—the drain plug size varies by model, engine, and year. In practice, many Honda engines use a 14 mm hex-head drain plug with an M14x1.5 thread, but exceptions exist depending on the specific car.
The exact size is tied to the engine design and production changes over time. Owners should verify the precise specification for their exact Honda model and year to avoid damaging the plug or creating an oil leak.
Why the size varies
The size of the oil drain plug is determined by the engine’s design requirements and manufacturing updates. Different Honda engine families (for example, the K- and B-series and newer designs) have evolved, and so have the dimensions of the drain plug and its threads. As a result, there isn’t a one-size-fits-all answer across all Honda vehicles.
How to find your exact size
Use the following steps to determine the correct drain plug size for your specific Honda model and year.
- Check the owner’s manual or the official service manual for the exact drain plug size and the recommended torque specification for your model and engine code.
- Look up the Honda OEM parts catalog or a trusted parts database by entering your model, year, and engine code to confirm the drain plug thread size and head dimension.
- Inspect the current drain plug: note the head size (commonly 14 mm on many Hondas, but some models use 12 mm or another size) and compare to a socket or wrench at a parts store.
- If manuals aren’t available, take the old drain plug to an auto parts store or have a mechanic identify the correct size by reference to the vehicle’s engine code or VIN.
- Consult your vehicle’s engine code or VIN at a dealership or online service portal to pull exact specifications for the oil drain plug.
Following these steps will help ensure you use the correct drain plug size and avoid cross-threading or leaks.
Common sizes you might encounter
While there is variation, these are the sizes you’re most likely to encounter on Honda engines. Always verify for your specific model/year.
- 14 mm hex-head drain plug with M14x1.5 thread: this is the most common configuration on many modern Honda inline-4 engines (e.g., some K- and newer B-series designs).
- 12 mm hex-head drain plug with M12x1.25 thread: seen on some older or smaller-displacement Honda engines.
- Other head sizes or thread pitches: rare, but certain models or transmissions may use nonstandard sizes; always confirm with official specs.
In short, the right size depends on your specific Honda. Always confirm with model/year-specific documentation or a dealer before purchasing replacement parts.
Summary
There is no universal oil drain plug size for all Honda vehicles. The correct size depends on the model and engine, with 14 mm head and M14x1.5 threading being common on many modern Hondas, and some older or smaller engines using 12 mm head with M12x1.25 threading. To ensure accuracy, consult the owner’s manual, service manual, OEM parts catalogs, or a dealer for your exact car’s specifications.
What size is a Honda oil drain plug?
M14x1. 5 Magnetic Oil Drain Plug - Compatible with HONDA - Compatible with ACURA - Stainless Steel, Neodymium Magnet.
What size socket is a Honda oil filter?
This Filter Wrench Is 14 Flute 65MM (Approx 2 1/2").
What size socket do I need for my oil plug?
What size wrench to use for an oil drain plug depends on the size of the oil drain plug itself, which is a long bolt head. There is no universal oil plug size, but they do come in just a few several standard sizes, such as ¼ inch (. 6 centimeters), 3/8 inch (. 9 centimeters), ½ inch (1.3 centimeters), etc.
What size wrench for Honda Accord oil drain plug?
17mm wrench
EASY TO INSTALL - Includes an aluminum crush washer for simple installation with a 17mm wrench.
