This Fits Your 1979 Volvo 240 1.7l SideDraught Carb
Full size assembly image of Master cylinder (1/6)

Master cylinder

Bodystyle: 2DRS S.R
Bodystyle: 2DRS W/O S.R
Bodystyle: 4DRS S.R
Bodystyle: 4DRS W/O S.R
Bodystyle: 5DRS S.R
Bodystyle: 5DRS W/O S.R
Vacuum pump. servo cylinder. master cylinder. 260 5DRS. 260 2DRS, 4DRS. 240 5DRS. 240 2DRS, 4DRS.