Bosch 0280800053 / 0 280 800 053 Jetronic engine control unit module.

Fits Volvo 240, 244, 245, 242 in 1982 and 1983 with B21 engine.

Check what ECU you have now, this unit only interchanges with the exact number.

These are tested and work, I had a 1982 for years and kept these as spares. If you like, make an offer on all 4.