: This article is about the V4 engine. There is also an article about the brain's visual area V4.
A V4 is an engine in V configuration, with 4 cylinders.
Lancia produced several narrow-angle V4 engines in Italy.
The Ford of Europe produced two totally different V4 engines with a balance shaft, one in the UK and one in Germany:
The Russian manufacturer ZAZ also produced air cooled V4s with a balance shaft called MeMZ-965 and MeMZ-966. The only difference seems to be that the first gives 26 hp while the latter gives 27 hp.
V4 engines are also commonly found in motorcycles, for instance the
Piston engine configurations
