TYPE - FF-2 Full Function Trailer Valve // Single valve system - easy to install, maintain and troubleshoot // Built-in pressure protection and anti-compounding functions REPLACEMENT - Haldex: KN28601X, KN28601, KN28601RX // Mack: 5396KN28601 // Midland: KN28601, N4304AB SPECS - Crack Pressure: 3.0 PSI // Reservoir Port: 1/2" // Control Port: 1/4" // Supply Port: 3/8" // Spring Brake Ports: 2 @ 3/8" // Delivery Ports(4): 3/8" // Approximate Weight: 3 lbs. FITMENT - Please, call your dealer and ask for the part number if you are not sure about the fitment. Then, check out if this item replaces it. WARRANTY - 1-Year Unlimited Mile Warranty - includes assurances about the quality of the item, as well as a promise to provide replacement if something goes wrong within a set amount of time. TORQUE FF-2 Full Function Air Brake Trailer Valve (Replaces Mack Midland Haldex KN28601 KN28601X) (TRKN28601)