Welcome to Northside. Save when you replace your air filter while you get an oil change. There has never been a better time to protect your vehicle’s engine and improve its performance! Now through April 30, you can save money doing this at your participating NAPA AutoCare Center. Save $20 instantly on the installation of a Napa Gold Air Filter or save $10 instantly on the installation of a Pro Select Air Filter when you add to to this service to your next oil change. Make your next appointment today at your neighborhood NAPA Auto Care Center.