The most common oil drain plug on a Honda Civic uses a 14mm hex socket with an M14x1.5 thread, but some engines and generations use a different size (including a 17mm head). Always verify the exact specification for your model year in the owner’s or service manual or by inspecting the plug itself.
Variations by model and year
Because the Civic has spanned multiple generations and markets, there isn’t a single universal plug size. The following options cover the most frequently encountered configurations, though the precise size for your car should be confirmed from official documentation or by inspecting the current plug.
- 14mm hex head with M14x1.5 thread — the most common configuration across many Civics.
- 17mm hex head — found on some older or less common variants.
- Thread pitches ranging roughly from M12x1.25 to M14x1.5 depending on generation and engine code.
To ensure accuracy, check your specific Civic’s manual or compare the existing drain plug to a gauge or socket set. If you replace the plug, use the correct crush washer/gasket and apply the recommended torque.
How to verify the exact size for your Civic
Follow these steps to determine the correct drain plug for your car without relying on memory alone.
- Consult the owner's manual or factory service manual for your exact engine and model year.
- Inspect the current drain plug: measure the head size with a socket, or bring the plug to an auto parts store for matching.
- Use the correct plug size and torque when replacing, and ensure you have a replacement crush washer or gasket if required.
Note: If your Civic has undergone an engine swap or aftermarket modification, sizes may differ. Always return to the manufacturer’s specifications or the plug you removed for a reliable reference.
Torque and maintenance considerations
Torque specifications vary slightly by engine, but a typical range for most Civics is about 20–25 ft-lbs (27–34 Nm). Avoid over-tightening to prevent stripped threads, and replace the drain plug washer with a new one if your vehicle requires it. Follow the manual for any model-specific nuances.
Summary
There isn’t a single drain plug size for every Honda Civic. The most prevalent configuration is a 14mm hex head with M14x1.5 threads, but some models use 17mm heads or different thread pitches. For accuracy, always confirm with the official manual or by inspecting the plug on your specific vehicle, and adhere to the recommended torque and gasket/washers guidelines.
What size is a Honda oil drain plug?
Most cars use oil drain plugs between 13mm and 17mm, depending on the brand. For example, Toyota and Honda typically use 14mm or 17mm, while Ford often uses 13mm or 15mm.
What size socket do I need for a drain plug?
Types of Oil Drain Plugs
These have a standard hex head, typically ranging from 13 mm to 17 mm. A low-profile hex wrench or a six-point socket in the correct size provides the best grip. Avoid twelve-point sockets on these, as they contact the bolt at thinner points and are more prone to rounding.
What size is the drain plug on a 2017 Honda Civic?
17 mm
Dorman – Standard Engine Oil Drain Plug: M14-1.50 Thread, 17 mm Head, 1 Bag (Part No. 090-033.1)
What size socket for oil drain plug Honda Civic?
17Mm
Dorman – Oil Drain Plug Standard M20-1.50, Head Size- 17Mm (Part No. 65221)