How to Replace Spark Plugs — 2021-2025 Ford Bronco

Replacing spark plugs on your 2021-2025 Ford Bronco is a key maintenance task to ensure smooth engine performance, especially if you're noticing rough idling, misfires, or reduced fuel economy, or if you've hit the 60,000-100,000 mile mark. This DIY repair can save you significant labor costs, with parts costing between $40-$80 compared to shop fees of $150-$300. With the right tools and this guide, most DIYers can tackle this job confidently in a couple of hours. DIY Cost: $40-$80 | Shop Cost: $150-$300

You’re done. Clear any stored codes with your scanner and complete a normal drive cycle so the vehicle’s readiness monitors reset.

If the code returns, the root cause likely wasn’t the part you replaced — go back through the diagnostic steps before swapping anything else.