WRX Spark Plug Socket Size
What is a Spark Plug Socket?
A spark plug socket is a specialized tool used to remove and install spark plugs in an engine. It has a rubber insert or a magnetic feature that securely holds the spark plug, preventing it from falling out or getting damaged during the process.
Why is the Correct Socket Size Important?
Using the correct spark plug socket size is crucial to ensure a proper fit and prevent damage to the spark plug and the socket itself. Using the wrong size socket can lead to rounded or stripped spark plug hexes, making future removal difficult and potentially causing damage to the engine.
Spark Plug Socket Size Chart
To determine the correct spark plug socket size for your WRX, refer to the chart below:
| WRX Model | Year | Spark Plug Socket Size |
|---|---|---|
| WRX Base | 2002-2014 | 5/8″ (16mm) |
| WRX Base | 2015-present | 9/16″ (14mm) |
| WRX STI | All years | 5/8″ (16mm) |
Steps to Remove and Install Spark Plugs on a WRX
Follow these steps to safely remove and install spark plugs on your WRX:
- Ensure the engine is cool before starting.
- Locate the spark plug wires or ignition coil packs on top of the engine.
- Remove the spark plug wire/boot or ignition coil pack from the spark plug by gently twisting and pulling.
- Insert the spark plug socket onto the spark plug, ensuring a secure fit.
- Using a ratchet or spark plug wrench, carefully loosen and remove the spark plug by turning it counterclockwise.
- Inspect the old spark plug for signs of wear or damage. If necessary, replace it with a new one of the same size and heat range.
- Apply a small amount of anti-seize compound to the threads of the new spark plug to prevent seizing in the future.
- Insert the new spark plug into the socket and carefully thread it into the spark plug hole by hand to avoid cross-threading.
- Tighten the spark plug using the spark plug socket and ratchet, turning it clockwise until snug.
- If using a torque wrench, refer to the manufacturer’s specifications for the correct torque value and tighten accordingly.
- Reinstall the spark plug wire/boot or ignition coil pack onto the spark plug.
- Repeat the process for each spark plug in the engine.
Conclusion
Using the correct spark plug socket size is essential for maintaining the performance and longevity of your WRX’s engine. By following the steps outlined above, you can safely remove and install spark plugs, ensuring a proper fit and optimal engine performance. Remember to consult the spark plug socket size chart for your specific WRX model and year to avoid any potential issues.