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What size socket for wrx spark plug?

The recommended socket size for the spark plugs on a Subaru WRX is a 16mm spark plug socket. This socket size is specifically designed to fit the spark plugs used in the WRX's turbocharged 2.4-liter boxer engine.


Detailed Explanation


The Subaru WRX is known for its powerful turbocharged engine, which requires specific maintenance procedures to keep it running at its best. One of the key maintenance items is replacing the spark plugs, which are responsible for igniting the air-fuel mixture in the engine's cylinders.


Subaru recommends using a 16mm spark plug socket when servicing the spark plugs on a WRX. This socket size is necessary to properly grip and remove the spark plugs without damaging them or the surrounding components.



  • The 16mm socket size is specifically designed to fit the spark plugs used in the WRX's 2.4-liter turbocharged boxer engine.

  • Using a socket that is too small or too large can lead to difficulties in removing or installing the spark plugs, potentially causing damage to the plugs or the engine's cylinder head.

  • It's important to use a high-quality spark plug socket, as the tight tolerances required for the WRX's engine can make it challenging to remove and replace the plugs.


Following the recommended 16mm socket size and proper spark plug replacement procedures is crucial for maintaining the performance and reliability of the Subaru WRX's turbocharged engine.

What size are NGK spark plugs?


Identifying NGK Spark Plugs

LetterThreadHex
B14mm20.8mm
C10mm16.0mm
D12mm18.0mm
E8mm13.0mm



What size socket for 14mm spark plug?


3/8-inch
Spark plug socket. 3/8-inch drive. Socket Size: 14mm.



What size spark plugs for 2011 WRX?


SPARK PLUG . NGK PLFR6A-11.



What size is the oil plug on a 2016 WRX?


M20 x 1.50 Thread size.



What size spark plug socket for Subaru WRX 2016?


With a 14mm spark plug socket and short extension, remove the spark plugs.



Can I use 9/16 instead of 14mm spark plug socket?


For the majority of plugs, you need a 5/8” or 16mm socket. Some Fords use 9/16″ plugs, some newer European and Asian vehicles use 14mm plugs, and there are a few applications that use 7/8″, 13/16″, ¾” or 18mm plugs. All spark plugs are 6 sided, except some BMW engines.



What size socket fits a ngk spark plug?


Note that the socket size for NGK spark plugs, which are a common brand, is either 5/8 or 13/16.



When should I replace my WRX spark plugs?


To extend the life of your Subaru spark plugs and ensure your engine runs smoothly, regular maintenance is key. This includes following Subaru's recommended service intervals—typically every 60,000 miles for standard replacements.


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.