Volvo's next major advance was the B4B line of compact inline-four engines introduced in 1944.
- 1944–1956 B4B — 1.4 litres - 1,414 cubic centimetres (86.3 cu in) — fitted into the Volvo PV and Volvo Duett
- B14A — twin-choke carburettor B4B
- 1957–1960 B16A and B16B — 1.6 litres - 1,583 cubic centimetres (96.6 cu in) — enlarged B14A fitted into the PV, Duett and Volvo Amazon
Read more about this topic: List Of Volvo Engines