What size socket is a car drain plug?

The size of the socket needed for a car's drain plug typically ranges from 10mm to 19mm, with the most common sizes being 14mm, 15mm, and 17mm. The exact size will depend on the make, model, and year of the vehicle.

Understanding Car Drain Plugs

The drain plug is a crucial component in a car's oil change process. It is located at the bottom of the oil pan and is used to drain the old oil from the engine. The size of the drain plug socket is an important consideration when performing an oil change, as using the wrong size can lead to damage or stripping of the plug.

Determining the Drain Plug Size

• The most common drain plug sizes are 14mm, 15mm, and 17mm, but some vehicles may use smaller or larger sizes.


• The size of the drain plug is typically stamped or engraved on the plug itself, making it easy to identify.


• If the drain plug size is not visible, you can consult your vehicle's owner's manual or look up the information online based on the make, model, and year of your car.


• It's important to use the correct socket size to avoid stripping the plug, which can be a costly and time-consuming repair.

Knowing the right drain plug size for your car is essential for a successful oil change. By using the appropriate socket, you can ensure a smooth and efficient oil change process.

What size ratchet for car maintenance?

1/2 inch - 1/2" sockets are generally used for nuts and bolts from around 10mm and up. A 1/2" drive socket can apply enough force to undo all nuts on a car. There are also 3/4" and 1" ratchets but these are used on trucks, tanks and industrial machinery.

Are all drain plugs the same size for cars?

The truth is, there's no single answer. Every manufacturer designs their engines differently, and even models from the same brand can have different plug sizes depending on the year or engine type. Using the wrong socket doesn't just waste time, it can strip bolts, cause leaks, or even damage your oil pan.

Which is bigger, 1/2 or 3/8 wrench?

Size and Weight
The 1/2 inch drive makes the 1/2 impact wrench bigger and heavier. You get more power, but you might find it harder to use in small spaces. If you work in a garage or shop, the extra weight is not a big problem. For jobs that need you to move around a lot, the 3/8 impact wrench is easier to carry.

What size socket do I need to remove the oil drain plug?

The correct socket size for an oil plug depends on your car's make and model, as there is no single universal size. Common metric sizes include 14mm, 15mm, 17mm, and 19mm, while some older vehicles may use SAE sizes like 3/8" or 1/2". Always inspect the plug to confirm the size, as using the wrong socket can damage the bolt head. 
You can watch this video to learn how to change the oil in a Honda CR-V, including removing the drain plug: 1m1A Auto: Repair Tips & Secrets Only Mechanics KnowYouTube · Aug 13, 2018
How to find the right size

• Check your owner's manual: This is the most reliable way to find the correct size for your specific vehicle. 
• Inspect the plug: Visually examine the drain plug to determine its size. You can also measure it with a caliper if needed. 
• Try common sizes: If you can't find your manual, start with common metric sizes like 14mm, 15mm, 17mm, or 19mm. 
• Use the right socket type: A 6-point socket is recommended over a 12-point socket to prevent stripping the bolt head. 

This video demonstrates how to use a drain plug removal tool with a magnetic feature: 52sScavenger1320YouTube · Feb 23, 2024
Important tips

• Use the correct socket: A well-fitting socket is crucial to avoid rounding the bolt head. 
• Tighten properly: Do not overtighten the drain plug, as this can strip the threads. Tighten it to the manufacturer's specifications, or just snug it up if you don't have a torque wrench. 
• Replace the crush washer: It is a good practice to replace the crush washer on the drain plug to ensure a proper seal.