The Kharkiv model V-2 (Russian: В-2) is a Soviet diesel tank V-12 engine, the V angle at 60°, with dual overhead camshafts per bank, four valves per cylinder opened by bucket-style followers and direct fuel injection.

Throughout its production life, output ranged from roughly 450–700 hp (340–520 kW).

The V-2 was in development from 1931 until 1939 by the design team of the diesel department of the Kharkiv Locomotive Works, first under the leadership of Konstantin Chelpan, who was arrested in 1938.

[1] Near the end of the 20th century, the V-2 was fitted with more modern modifications by the chief designer of the head design bureau for the Chelyabinsk Tractor Plant, Vladimir Ivanovich Butov.

The T-valve, leading to both radiators, was designed for filling the cooling system with coolant.