---
id: faq-0071
title: "What should I know about air filter replacement?"
category: faq
subtopic: service-and-maintenance
page_type: faq
source_url: "https://www.castlechevymchenry.com"
tags: ["filters", "maintenance", "engine-health"]
questions:
  - "How often should I replace my air filter?"
  - "What does an air filter do?"
  - "Why is air filter maintenance important?"
related: [cabin-filter, maintenance-schedule, engine-performance]
dealer: Castle Chevrolet McHenry
---

Your engine's air filter keeps dirt and debris out of the engine, protecting its performance and longevity. A clogged filter reduces fuel efficiency and engine power. Most air filters need replacing every 12,000 to 15,000 miles, though driving in dusty conditions may require more frequent changes.

Your cabin air filter (which cleans air inside the vehicle) should also be replaced periodically for fresh, clean cabin air. Castle Chevrolet McHenry carries genuine filters and can swap yours during a quick service visit.

Time for new filters? Call (779) 600-2956 and we'll get you taken care of.