Mercedes Benz 722 .0 1 .2 Automatic Transmission Manuals (2024)

Mercedes Benz Automatic Transmissions Manufactured 1961-1983

Model Numbers: 722.0 722.1 722.2
3 and 4-speed longitudinal automatic transmissions
Identification: can be recognized by its four bolt pan

The Mercedes-Benz first series of automatic transmission, designated with series model numbers 722.0, 722.1 and 722.2, is a family of three and four-speed automatic transmission for engines with longitudinal layout for rear wheel drive passenger cars.

This transmission was the first Mercedes-Benz true automatic transmission developed in house.

Before this, the company used semi automatics systems like a vacuum-power shifting for overdrive or the "Hydrak" hydraulic automatic clutch system. Alternatively, they bought true automatic transmissions from other vendors, such BorgWarner.

Control of the fully automatic system is fully hydraulic and it uses electrical wire only for the kickdown solenoid valve and the neutral safety switch.

Three-speed units use two planetary gear sets and 4-speed units use three planetary gear sets.

Our Transmission Manuals open as .pdf files, or run in browser when purchasing multi manual collections. All manuals can be accessed on a Mac or PC computer. Multi manual collections work with Internet Explorer, Chrome, Firefox, Safari, and other browsers.Transmission Identification

U.S. CD Orders Only: MB Automatic Transmission Manual Collection

For 722.0, 722.1, 722.2 Model Transmissions
K 4 C 025 / K 4 A 040 / W 4 B 025 / W 3 A 040 /
Reference for K 4 A 025 / K 4 A 050 / K 4 B 050
Reference for W 3 B 050 / W 3 B 959
3 & 4 Speed Automatic Transmission Manuals

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For 722.0, 722.1, 722.2 Model Transmissions
K 4 C 025 / K 4 A 040 / W 4 B 025 / W 3 A 040 /
Reference for: K 4 A 025 / K 4 A 050 / K 4 B 050
Reference for: W 3 B 050 / W 3 B 959
3 & 4 Speed Automatic Transmission Manuals 46.2mb

This page includes Mercedes Benz Service & Repair Manual’s for the following Transmission Models.

Mercedes 722.0, 722.1, 722.2, 3 & 4 Speed Automatic Transmissions
K 4 C 025 / K 4 A 040 / W 4 B 025 / W 3 A 040
Reference for K 4 A 025 / K 4 A 050 / K 4 B 050
Reference for W 3 B 050 / W 3 B 959
722-0-1-2 Trans application and resources

722.2 (K4C025 and K4A040)

The 722.2 is the first of the series, launched in April 1961 for the W111 220SEB, later replaced with the 722.0 and 722.1. It is a 4-speed unit and uses fluid coupling (also referred in some manuals as hydraulic/automatic clutch).

722.0 (W3A040 and W3B050)

The 722.0 is the strongest of the series, starting with the W3A040, W3B050 and a reinforced W3B050 (722.003) exclusively used in the W116 450 SEL 6.9. The second in the series, it was released initially for the W116 450SE and SEL in August 1972, and it uses a torque converter instead of fluid coupling. The transmission is used in V8 engines as a 3-speed unit.

722.1 (W4B025)

The 722.1 is a 4-speed unit, the last model released in the series, that also uses a torque converter. Used with l4, l5 and l6 engines, it was not used in V8 models because it wasn't designed to handle that amount of torque, instead the 722.0 was used in those V8 engine applications. In normal situations, this model transmission rests stationary in 2nd gear, but uses 1st gear when the vehicle starts moving and throttle is applied, or if L position is selected with the gear selector.

See Transmission Applications Table Below

Purchase Individual Transmission Manuals

This manual series runs in a browser and works with all operating systems.Automatic Transmission Maintenance and Diagnosis
Includes Designations and Vehicle Applications
Covers All Models Through 1990
mb1990transervice – 30 pages 5.17mb

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Automatic Transmission Functional Description
722.0 / 722.1 / 722.2 / K4C-025 / K4A-040
W4B-025 / W3A-040 / W3B-959
mb722.012autotrans – 76 pages 9.88mb

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Automatic Transmission Service Repair Manual
722.2
K4C-025 / K4A-040
mb722.2autotrans – 58 pages 7.81mb

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Automatic Transmission Repair Manual
1968-1981 4 Bolt Pan Models
722.1 / 722.2 / 025 / 040 / 050
mb722.12autotrans – 112 pages 10.8mb

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722.0 722.1 722.2 Transmission Resources:

Mercedes Benz Transmission Type and Application

K4A-025 First Mercedes auto trans, installed in sedans up to 1969 and in 280SL vehicles through the end of their production in 1985
K4A-050 Used in vehicles with 6.3 liter V8
K4B-050 Included double planetary gears, to handle M100 torque
K4C-025 722.2 Introduced from 1968-1973 in W114 / W115 vehicles
K4A-040 722.2 Reinforced model used in 3.5 liter V8 vehicles
W4B-025 722.1 Introduced in 1974 in W114 / W115 / 280S / 300D vehicles. Similar to K4C-025, but with torque converter, second gear start
W3A-040 722.0 Used in vehicles with 4.5 liter V8
W3B-050 722.0 Reinforced version used in 1975-81 450SEL 6.9 liter vehicle

722.0 722.1 722.2 Transmission Applications

Transmission: 722.2 K4C025		MB Series: W114 and W115
Chassis Code	Car Model	Engine Code	Transmission Code
114.015 and 114.615	230.6	180.954	722.203
114.017 and 114.617	230.6 Lang	180.954	722.203
114.011 and 114.611	250	130.923	722.204
114.023 and 114.623	250C	130.923	722.204
114.060 and 114.660	280	110.921	722.202
114.073 and 114.673	280C	110.921	722.202
114.062 and 114.662	280E	110.981	722.200
114.072 and 114.672	280CE	110.981	722.200
115.015 and 115.615	200	115.923	722.205
115.010	220	115.920	722.205
115.115 and 115.715	200D	615.913	722.206
115.110 and 115.710	220D	615.912	722.206
115.112	220D Lang	615.912	722.206
Transmission: 722.2 K4A040		MB Series: R107 and C107
Chassis Code	Car Model	Engine Code	Transmission Code
107.043	350SL	116.982 (D-Jet), 116.984 (K-Jet)	722.201
107.023	350SLC	116.982 (D-Jet), 116.984 (K-Jet)	722.201
107.024	450SLC	117.982 (D-Jet), 117.985 (K-Jet)	722.201

Transmission: 722.0 W3A040		MB Series: R107 and C107
Chassis Code	Car Model	Engine Code	Transmission Code
107.043	350SL	116.982 (D-Jet), 116.984 (K-Jet)	722.002
107.023	350SLC	116.982 (D-Jet), 116.984 (K-Jet)	722.002
107.044	450SL	117.982 (D-Jet), 117.985 (K-Jet)	722.004 USA & Japan
107.024	450SLC	117.982 (D-Jet), 117.985 (K-Jet)	722.004 USA & Japan
		MB Series: W116
116.028	350SE	116.983 (D-Jet), 116.985 (K-Jet)	722.002
116.029	350SEL	116.983 (D-Jet), 116.985 (K-Jet)	722.002
116.032	450SE	117.983 (D-Jet), 117.986 (K-Jet)	722.004 USA & Japan
116.033	450SEL	117.983 (D-Jet), 117.986 (K-Jet)	722.004 USA & Japan
Transmission: 722.0 W3B050		MB Series: R107 and C107
Chassis Code	Car Model	Engine Code	Transmission Code
107.044	450SL	117.982 (D-Jet), 117.985 (K-Jet)	722.001
		MB Series: W116
116.032	450SE	117.983 (D-Jet), 117.986 (K-Jet)	722.001
116.033	450SEL	117.983 (D-Jet), 117.986 (K-Jet)	722.001
116.036	450SEL 6.9	100.985	722.003 Reinforced

Transmission: 722.1 W4B025		MB Series: R107 and C107
Chassis Code	Car Model	Engine Code	Transmission Code
107.042	280SL	110.982, 110.986, 110.990	722.103, 722.112
107.022	280SLC	110.982, 110.986	722.103, 722.112
		MB Series: W114 and W115
Chassis Code	Car Model	Engine Code	Transmission Code
114.015 and 114.615	230.6	180.954	722.105
114.017 and 114.617	230.6 Lang	180.954	722.105
114.011 and 114.611	250	130.923	722.104
114.023 and 114.623	250C	130.923	722.104
114.060 and 114.660	280	110.921	722.102
114.073 and 114.673	280C	110.921	722.102
114.062 and 114.662	280E	110.981	722.103
114.072 and 114.672	280CE	110.981	722.103
115.015 and 115.615	200	115.923	722.106
115.017	230.4	115.951	722.110
115.115 and 115.715	200D	615.913	722.107
115.110 and 115.710	220D	615.912	722.107
115.112	220D Lang	615.912	722.107
115.117	240D	616.916	722.108
115.119	240D Lang	616.916	722.108
115.114	240D 3.0	617.910	722.109
		MB Series: W116
Chassis Code	Car Model	Engine Code	Transmission Code
116.020	280S	110.922	722.100, 722.102, 722.111
116.024	280SE	110.983 (D-Jet), 110.985 (K-Jet)	722.101, 722.103, 722.112
116.025	280SEL	110.983 (D-Jet), 110.985 (K-Jet)	722.101, 722.103, 722.112
116.120	300SD	617.950	722.120 Only USA
		MB Series: W123
Chassis Code	Car Model	Engine Code	Transmission Code
123.020	200	115.938, 115.939	722.115
123.220	200	102.920, 102.939	722.121
123.280	200T	102.920, 102.939	722.121
123.023	230	115.954	722.119
123.083	230T	115.954	722.119
123.043	230C	115.954	722.119
123.223	230E	102.980	722.122
123.283	230TE	102.980	722.122
123.243	230CE	102.980	722.122
123.026	250	123.920, 123.921	722.113
123.086	250T	123.920, 123.921	722.113
123.028	250 Lang	123.920, 123.921	722.113
123.030	280	110.923	722.111
123.050	280C	110.923	722.111
123.033	280E	110.984, 110.988	722.112
123.093	280TE	110.984, 110.988	722.112
123.053	280CE	110.984, 110.988	722.112
123.120	200D	615.940	722.116
123.126	220D	615.941	722.116
123.123	240D	616.912	722.117
123.183	240TD	616.912	722.117
123.125	240D Lang	616.912	722.117
123.130	300D	617.912	722.118
123.190	300TD	617.912	722.118
123.132	300D Lang	617.912	722.118
123.150	300CD	617.912	722.118 Only USA

Mercedes Benz automatic transmission 722.0 / 722.1 / 722.2 / 3-speed and 4-speed automatic transmission / Automatikgetriebe 722.0 / 722.1 / 722.2 / 3 Gang und 4 Gang Automatikgetriebe

Gearbox Model / Designation / Type:

722.000, 722.001, 722.002, 722.003, 722.004, 722.005, 722.006, 722.007,

722.100, 722.101, 722.102, 722.103, 722.104, 722.105, 722.106, 722.107, 722.108, 722.109, 722.110, 722.111, 722.112, 722.113, 722.114, 722.115, 722.116, 722.117, 722.118, 722.119, 722.120, 722.121, 722.122,

722.200, 722.201, 722.202, 722.203, 722.204, 722.205, 722.206

Vehicle Application:

W107, W108, W109, W114, W115, W116, W123, 200, 220, 230, 230.4, 230.6, 240, 250, 280, 300, 350, 450, 500, C, CE, D, E, SE, SEL, SL, SLC, T, TD, TE, / 8, 3.0, 4.5, 5.0, 6.9, 6.9 AMG, turbo diesel

Mercedes First Auto Trans 722.2

Mercedes-Benz 722.2 4-Speed Automatic Transmission (Hydraulic)

The Mercedes-Benz 722.2 is a hydraulically-controlled 4-speed automatic transmission.
Versions

Version	Classif.	Max Torque	Applications
722.200	K4C025	245 N⋅m (181 lbft)	W114
722.201	K4A040	392 N⋅m (289 lbft)	C107,R107
722.202	K4C025	245 N⋅m (181 lbft)	W114
722.203	K4C025	245 N⋅m (181 lbft)	W114
722.204	K4C025	245 N⋅m (181 lbft)	W114
722.205	K4C025	245 N⋅m (181 lbft)	W115
722.206	K4C025	245 N⋅m (181 lbft)	W115

722.2 Applications:

1972-1976 Mercedes-Benz 350 SLC Coupé
1973 Mercedes-Benz 350 SLC 4.5 Coupé
1973-1976 Mercedes-Benz 450 SLC Coupé
1976-1977 Mercedes-Benz 450 SLC Coupé
1977-1980 Mercedes-Benz 350 SLC Coupé
1978-1980 Mercedes-Benz 450 SLC Coupé
1971-1976 Mercedes-Benz 350 SL Roadster
1977-1980 Mercedes-Benz 350 SL Roadster
1968-1973 Mercedes-Benz 230 LWB
1968-1973 Mercedes-Benz 230 Sedan
1971-1973 Mercedes-Benz 250 2.8 Sedan
1973-1976 Mercedes-Benz 250 C 2.8 Coupé
1973 Mercedes-Benz 280 Sedan
1973 Mercedes-Benz 280 C Coupé
1973 Mercedes-Benz 280 CE Coupé
1973 Mercedes-Benz 280 E Sedan
1974-1976 Mercedes-Benz 230.6 LWB
1974-1976 Mercedes-Benz 230.6 Sedan
1974-1976 Mercedes-Benz 250 Sedan
1974-1976 Mercedes-Benz 280 Sedan
1974-1976 Mercedes-Benz 280 C Coupé
1974-1976 Mercedes-Benz 280 CE Coupé
1974-1976 Mercedes-Benz 280 E Sedan
1968-1973 Mercedes-Benz 200 Sedan
1968-1973 Mercedes-Benz 200 D Sedan
1968-1973 Mercedes-Benz 220 Sedan
1968-1973 Mercedes-Benz 220 D LWB
1968-1973 Mercedes-Benz 220 D Sedan
1974-1976 Mercedes-Benz 200 Sedan
1974-1976 Mercedes-Benz 200 D Sedan
1974-1976 Mercedes-Benz 220 D Sedan

As an automotive enthusiast with a specific focus on transmission systems, especially those from Mercedes-Benz, I can confidently discuss the intricate details of the Mercedes Benz automatic transmissions manufactured between 1961 and 1983, particularly the 722.0, 722.1, and 722.2 models.

Firstly, Mercedes-Benz's journey with automatic transmissions is rich and evolved over time. The 722.0, 722.1, and 722.2 series signify a significant milestone for Mercedes-Benz, as they were the company's first true automatic transmissions developed in-house. Prior to these, Mercedes-Benz relied on semi-automatic systems such as vacuum-power shifting for overdrive and the "Hydrak" hydraulic automatic clutch system. Additionally, they sourced automatic transmissions from other manufacturers like BorgWarner.

Key Points:

Identification: One can recognize these transmissions by their distinct four-bolt pan.
Transmission Types:
- 722.2: Launched in April 1961 for the W111 220SEB, it is a 4-speed unit that uses fluid coupling (also known as hydraulic/automatic clutch).
- 722.0: Initially used in the W116 450SE and SEL in August 1972, this is the most robust among the series and operates using a torque converter.
- 722.1: The last model in this series, it's a 4-speed unit that, like the 722.0, also uses a torque converter. However, it's designed for l4, l5, and l6 engines and not V8 models.
Technical Details:
- Control for these transmissions is predominantly hydraulic, with electrical wiring only for specific functions like the kickdown solenoid valve and the neutral safety switch.
- The 3-speed units typically employ two planetary gear sets, while the 4-speed units use three planetary gear sets.
Applications and Variants:
- The 722.2 had various applications in vehicles like the W114, W115, and more.
- The 722.0, due to its robust nature, found its place in high-torque V8 models, especially the W116 450 SEL 6.9.
- The 722.1, though a 4-speed unit, was not designed for V8 models, with the 722.0 being the choice for such applications.
Manuals and Resources:
- For those looking to delve deeper into maintenance, repair, or understanding these transmissions, there are specific manuals available. These manuals provide comprehensive insights, from functional descriptions to repair procedures, aiding technicians and enthusiasts alike.
Transmission Parts: Over the years, various parts specific to each transmission model have been developed, ensuring that enthusiasts and mechanics have access to genuine components for maintenance and repair.
Historical Context: Understanding these transmissions also provides a glimpse into the evolution of Mercedes-Benz's engineering prowess, transitioning from semi-automatic systems to fully automatic transmissions developed in-house.

In conclusion, the 722.0, 722.1, and 722.2 series of Mercedes-Benz automatic transmissions represent a crucial phase in the company's engineering evolution. These transmissions combine hydraulic control with specific electrical functionalities, catering to a range of vehicles from sedans to high-torque V8 models. The availability of comprehensive manuals and dedicated parts ensures that these transmissions continue to be serviced and revered by enthusiasts and professionals globally.