Application : Ford E-350 Econoline Drum Brake Wheel Cylinder. 1990 Ford E-350 Econoline w/Single Rear Wheel (SRW); Bore: 1.0625 In.; 12.125 In. x 3.50 In. Brakes; Position: Rear Right;. 1991 Ford E-350 Econoline w/Single Rear Wheel (SRW); Bore: 1.0625 In.; 12.125 In.