Station 51 Apparatus ENGINE 551 is a 2001 KME Custom/Excel. Engine 551 is equipped with a 500 Gallon water tank, with a pumping capacity of 1500 gpm. Engine 551 carries 650 ft. of 2, 2 ½, and 3 inch hose. It also carries 1000 feet of 5 inch hose. AMBULANCE 551 is a 2003 FORD/HORTON. Ambulance 551 is an ALS transporting unit. TANKER 551 is a 1990 GMC/VOLVO. Tanker 551 is equipped with a 4000 Gallon tank, with a pumping capacity of 250 gpm. Tanker 551 carries 95 ft. of 2, 2 ½, and 3 inch hose. It also carries 20 feet of 5 inch hose.