Aftermarket Exhausts Systems are one of the most popular upgrades for any 2007-2008 Jeep Grand Cherokee 3.0L CRD. Adding an exhaust is typically a DIY installation and can be done right in your driveway with basic hand tools. An aftermarket exhaust will typically add horsepower/torque, lower the exhaust gas temperatures (EGT's), and can also improve engine efficiency. Exhaust systems can be offered in either 4" or 5" diameters, depending on your needs and preference. As soon as you begin looking for an exhaust, you will see a variety of construction choices and price points. Exhaust systems can be constructed in either stainless steel or aluminized steel and are available from many manufacturers. Find all the leading manufacturers such as MBRP, Magnaflow, AFE, Banks Power, AP Emission Technologies and more!