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What size is the oil plug socket?

The size of the oil plug socket you need depends on the specific vehicle and engine you're working on. Most common oil plug sockets range from 14mm to 32mm in size, with 17mm, 19mm, and 22mm being the most popular sizes. To determine the correct socket size for your vehicle, you'll need to consult your owner's manual or look up the specifications for your make, model, and year.


Understanding Oil Plug Sockets


Oil plug sockets are a specialized tool used to remove and tighten the oil drain plug on a vehicle's engine. These sockets are designed to fit the hexagonal shape of the oil plug, allowing you to easily loosen or tighten it without stripping the plug.


The size of the oil plug socket is determined by the size of the oil plug itself, which can vary depending on the vehicle manufacturer and engine design. Some common oil plug sizes include:



  • 14mm: Commonly found on smaller engines, such as those in compact cars and motorcycles.

  • 17mm: A very common size, used on many mid-size and full-size vehicles.

  • 19mm: Another popular size, often found on larger engines, such as those in trucks and SUVs.

  • 22mm: The largest size commonly used, typically found on heavy-duty vehicles and some high-performance engines.


It's important to use the correct size socket to avoid damaging the oil plug or the surrounding area. Using the wrong size can strip the plug, making it difficult to remove or tighten properly, which could lead to oil leaks or other issues.


Determining the Correct Socket Size


To find the right oil plug socket size for your vehicle, you can:



  • Check your owner's manual: The manual should specify the correct oil plug size for your make, model, and year.

  • Look up the specifications online: Many vehicle manufacturers provide this information on their websites or in online databases.

  • Measure the existing oil plug: If you don't have access to the manufacturer's information, you can try measuring the existing oil plug with a ruler or caliper to determine the size.


Once you know the correct socket size, you can purchase the appropriate oil plug socket or set to ensure a proper fit and avoid any issues when changing your vehicle's oil.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.