This Volvo's 1.8 litre inline-4 OHV gasoline engine was used from 1961 to 1968 in the Volvo PV544, 120 (Amazon), P1800 and 140 series automobiles.
While being quite different in design from it's predecessor B16, B18 has many interchangeable parts with the later B20 engine.
There are actually three variations of this engine, B18A (the single carburetor version), B18B (dual carburetor version) and B18D (also dual carburetor but with a lower compression ratio).
