Ilyushin DB-3 - list of versions
CKB-26 - technological demonstrator of a twin-engine long-range bomber, intended as a replacement for TB-3; M-85 engines, mixed construction, unarmed; 1 piece
CKB-30 - prototype long-range bomber; all-metal construction, machine gun in the bow, dorsal turret and under the fuselage; 1 piece
CKB-30 Moscow - prototype conversion for record long-haul flights
CKB-30 N Ukraine - two DB-3 2M-87B modified for record flights with a female crew
CKB-54 - accompanying variant with ŠKASy in the bow and tower replaced by 20 mm cannons ŠVAK and additional machine guns in the fuselage; 2 conversions of DB-3 2M-85 and 2M-87A
DB-3 2M-85 - serial variant CKB-30, 60+ pieces
DB-3 2M-86 - variant with M-86 engines and minor differences, such as five windows on the bow instead of three, etc. .; probably only a few dozen pieces
DB-3 2M-87 - variant with M-87A or M-87B engines, adjustable VIŠ-3 propellers, curved part of the back behind the cabin and modified armament; about 1000 pieces
DB-3 dive bomber - conversion DB-3 2M-87B with reinforced fuselage, VIŠ-23 propellers and sight for dive bombing; unknown number
DB-3 2M-88 - the last series from 1940 were equipped with M-88 engines with a takeoff power of 1100 hp
DB-3A - some sources used for DB-3 2M-86
DB-3B - unofficial designation for DB-3 2M-87
DB-3K - transport and freight conversion with aerodynamic cabin suspended under the fuselage
DB-3M - the designation used by some Western sources for DB-3 2M-87 (mainly Finnish prey); according to Russian sources, it is an almost unused designation for DB-3F transients with M-87B engines
DB-3T - torpedo variant DB-3 2M-86/2M-87; unknown number
DB-3TP -prototype of float torpedo version
DB-3S - some sources used for DB-3 2M-85
A total of 1528 DB-3 was to be produced.
DB-3F - a new basic variant with a new richly glazed bow, a thinner wing with a larger area, modified fuel system and landing gear; due to problems with M-88 engines the first machines were delivered with M-87B engines, then replaced by already reliable M-88B
DB-3F 2M-81 - prototype with Švecov M-81 engines with 1500 hp
DB-3F 2M-89 - prototype with Tumannsky M-89 engines of 1300 hp
DB-3FD - variant with wooden hull; prototype and 5 pre-series machines
DB-3FT - little used designation of torpedo variant; unknown number
Il-4 - renamed DB-3F in March 1942; machines built since 1942 had new outer wing panels with a larger angle of the trailing edge and increased fuel supply, a new turret with a 12.7 mm UBK machine gun, a fourth crew member operating the machine gun under the fuselage, new propellers and other minor changes
Il-4 2M-82 - prototypy s motory Švecov M-82 a M-82NV
Il-4 M-88F - small series with 1250 hp M-88F engines
Il-4TK - prototype of a high-altitude bombing and reconnaissance variant with M-88B engines with TK-3 turbochargers and a two-member crew in a new pressurized cabin in the bow
A total of 5256 DB-3F/Il-4 was to be produced.