Complete the cold air intake system on your 2007-2008 Jeep Grand Cherokee 3.0L CRD with Intake Couplers & Elbows. Available in 3.5" up to 6" diameter, and constructed from plastic, rubber, or silicone. Find a large selection of 90-degree, hump, straight, and reducing couplings. AFE, Fleece Performance, Vibrant, and Grand Rock are just some of the high-quality companies available at XDP.