Fitment For Chrysler 300 2005-2010/2012-2014 6.1L/6.4L For Dodge Challenger 2009-2023 3.6L/5.7L/6.1L/6.2L/6.4L For Dodge Charger 2006-2010/2012-2023 3.6L/5.7L/6.1L/6.2L/6.4L For Dodge Magnum 2006-2008 6.1L For Jeep Grand Cherokee 2006-2010 6.1L When to Replace Brake Calipers? Over time in normal driving conditions, the heat generated from the braking system can weaken and break down seals inside the calipers. They can become rusty, contaminated or dirty, and start to leak brake fluid if you don’t drive regularly. However, you should have your brakes checked immediately if you experience any of the following: .