The ALCO Filters MD9420 air filter is designed for the Volkswagen Transporter IV Bus. It fits the 2.4 D Syncro version with a 2,370 cc engine and 57 kW of power, for model years 1992–1998.
- Filter type: Air
- Manufacturer: ALCO Filters
- Compatibility: Volkswagen Transporter IV Bus 70XB, 70XC, 7DB, 7DW, 7DK
- Engine displacement: 2,370 cc
- Engine power: 57 kW
- Model years: 1992–1998
- Height: 59 mm
- Length: 278 mm
- Width: 216 mm
- Equivalent part numbers: VAG 074129620, HENGST FILTER E243L01, HENGST FILTER E243L, KNECHT LX537, KNECHT LX538, MANN-FILTER C29198, MANN-FILTER C291981, PURFLUX A1050