Skip to content
Home » Determining Subaru Spark Plug Socket Size

Determining Subaru Spark Plug Socket Size

    What Size Socket for Subaru Spark Plugs

    Overview

    When it comes to maintaining your Subaru’s engine, one important task is changing the spark plugs. To successfully replace the spark plugs, you’ll need the right size socket. In this article, we will guide you on determining the correct socket size for Subaru spark plugs.

    Identifying the Correct Socket Size

    To find the appropriate socket size for your Subaru spark plugs, you can refer to the chart below:

    Subaru Model Socket Size (mm)
    Impreza 16mm
    Legacy 16mm
    Outback 16mm
    Forester 16mm
    Crosstrek 16mm

    Step-by-Step Guide

    If you’re unsure about the socket size for your specific Subaru model, follow these steps to determine the correct size:

    1. Open the hood of your Subaru and locate the spark plug wires.
    2. Follow the spark plug wires to the engine, where you’ll find the spark plugs.
    3. Inspect the spark plug head and note the size imprinted on it.
    4. Using a ruler or measuring tape, measure the diameter of the spark plug head.
    5. Refer to the chart above to find the corresponding socket size for your measured diameter.

    Tips for Changing Spark Plugs

    • Always change spark plugs when the engine is cool to avoid burns.
    • Use a spark plug socket with a rubber grommet inside to securely grip the spark plug during removal and installation.
    • Apply a small amount of anti-seize compound to the spark plug threads before installation to prevent seizing in the future.
    • Torque the spark plugs to the manufacturer’s specifications to ensure proper tightness.
    • Replace one spark plug at a time to avoid mixing up the wires and causing misfires.

    Conclusion

    Knowing the correct socket size for your Subaru spark plugs is essential for a successful replacement. By following the steps outlined in this article and referring to the provided chart, you can confidently change your Subaru’s spark plugs and keep your engine running smoothly. Remember to always prioritize safety and consult your vehicle’s manual for specific instructions. Happy wrenching!