Mishimoto MMCP-2530 Black 2.5" to 3.0" Transition Coupler Length: 3 Thickness: 4mm ID: 2.5 OD: 3.0 ID: 2.8 OD: 3.4 100% silicone construction Heat-resistant embedded fibers High heat and pressure tolerances Mishimoto Lifetime Warranty Inlet is 2.5 inches Outlet is 3.0 inches Available in black Limited lifetime warranty