About this item [Perfect Fitment]: Compatible with Ford F-150/F-250/F-350 1983-1992 (To 3/1992), F-100 1983, Ranger 1984, Ranger 1983-1988 L4 2.0L, Ranger 1983-1985 V6 2.8L, Ranger 1986-1991 V6 2.9L, Ranger 1991 V6 3.0L, Ranger 1990-1991 V6 4.0L, E-150 Econoline/E-150 Econoline Club Wagon 1984-1992 (To 3/1992), E-350 Econoline/E-350 Econoline Club Wagon 1983-1992 (To 3/1992) [Reference Number]: The A-Premium Vacuum Pump’s reference number: 904-808, 904808, 64-1006, 641006, 90-1006, 901006, E4TZ2A451A. [Product Description]: Vacuum Pump Connector: Barbed; Housing Material: Metal; Pulley Included: No; Gasket or Seal Included: No; Vacuum Relief Valve: Yes; Vacuum Pump Inlet 3/8 in, 1/2 in, 5/8 in, 3/4 in, 1 in; Vacuum Pump Drive System: Belt Drive [Note]: It fit fits the Mechanically Driven model, fits models built date from 3/1992 [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted vacuum pump. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.