Air Lift Fittings 34840 Air Lift Company has developed dependable air spring suspension products since our inception in 1949. All our efforts are spent ensuring your safety and comfort by designing, engineering and manufacturing the highest quality suspension products. FITTING PACK FOR 4 GALLON ALUMINUM TANK 7 PORT (11957 OR 12957) WITH 1/4IN. LINE Air Line Fitting Kit; For 4 Gallon Aluminum Tank 7 Port PN[11957/12957] With 1/4 in. Line; Air Lift Fitting Pack For 4 Gallon Alum Tank 7 Port (11957 Or 12957) With 1/4in Lines