Spark Plug Size in a Subaru WRX
The spark plug size for a Subaru WRX is a 14mm socket. This size is recommended for both removing and installing the spark plugs in a Subaru WRX.
When replacing spark plugs in a Subaru WRX, it’s important to use the appropriate tools, including an appropriately sized spark plug socket, 8-10mm sockets, a ratchet and extensions, and a 10mm wrench.
Contents
- What thread is a 14mm spark plug?
- Are all spark plugs a standard size?
- Are all spark plugs 14mm?
- How big is a spark plug socket?
- What size socket fits a 14mm spark plug?
- Will a 5 8 spark plug socket fit 16mm?
- Are most spark plugs 14mm?
- What size socket for Subaru spark plugs?
- Is 5 8 the same as 16mm?
- How do I know my spark plug size?
What thread is a 14mm spark plug?
Identifying NGK Spark Plugs
| Letter | Thread | Pitch |
|---|---|---|
| A | 18mm | 1.50mm |
| B | 14mm | 1.25mm |
| C | 10mm | 1.00mm |
| D | 12mm | 1.25mm |
Are all spark plugs a standard size?
While you should buy spark plugs in matching sets for your vehicle, not all spark plugs are universal. Spark plugs come in different sizes with different gaps and are manufactured using a variety of metals. Finding the ones that you need can be difficult.
Are all spark plugs 14mm?
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.
How big is a spark plug socket?
Spark plug sockets come in two sizes: 5/8 inches and 13/16 inches. Most spark plug sockets have a rubber insert that holds the plug snugly in place. You may also need a universal joint if your spark plugs are difficult to reach.
What size socket fits a 14mm spark plug?
SPARK PLUG SPANNER SOCKET FOR 14mm SPARK PLUGS (21MM SOCKET) WITH T-BAR.
Will a 5 8 spark plug socket fit 16mm?
You won’t be able to find a 16mm spark plug socket specific socket very easy, just get a good 16mm 6-point deep socket 3/8″ drive, I have a Craftsman it works perfectly. You can use some 5/8’s sockets.
Are most spark plugs 14mm?
Most plugs these days are 14mm thread; however, 18mm and 7/8-inch threads have been used on many earlier vehicles, and you will see some 10mm or 12mm threads on newer imported motorcycles and small engines. The next consideration is reach or how long the threads are.
What size socket for Subaru spark plugs?
Remove The Spark Plugs
With a 14mm spark plug socket and short extension, remove the spark plugs.
Is 5 8 the same as 16mm?
16mm = 5/8 inch. 17mm = almost 11/16 inch. 18mm = just over 11/16 inch. 19mm = 3/4 inch.
How do I know my spark plug size?
It’s good practice to confirm your spark plug socket size by checking your owner’s manual. Note that the socket size for NGK spark plugs, which are a common brand, is either 5/8 or 13/16.
