What is the construction and purpose of automatic transmissions?

Automatic transmissions are drivetrain assemblies mounted between the engine and subsequent drivetrain components. Their typical construction includes a housing, a gear set, a hydraulic system, electronic controls, and a torque converter or clutch packs. The transmission's task is to select the gear ratio according to driving speed and engine load without manual shifting by the driver.

What are automatic transmissions used for?

Automatic transmissions are used for smooth torque transfer and automatic gear shifting while driving. In practice, they affect the comfort of starting, accelerating, and driving in traffic jams, as well as cooperation with vehicle electronics. Without a properly functioning transmission, there may be delays in drivetrain response, jerking, or reduced vehicle performance.

What is the construction and function of a torque converter?

A torque converter is a hydrodynamic element connecting the engine to the automatic transmission. It consists of a housing, a pump impeller, a turbine, and a stator, and in many versions, also a lock-up clutch. Its function is to smoothly transfer drive during starting and to dampen sudden load changes.

How to check the compatibility of an automatic transmission with a vehicle?

The most reliable method is to compare the OEM number, transmission code, interchangeable numbers, and vehicle data via VIN. It is also worth verifying the fuel type, engine version, drivetrain type, and associated accessories, e.g., the controller or selector. This information helps avoid incompatibility during installation.

What symptoms indicate problems with an automatic transmission?

The most common symptoms include jerking during gear changes, delayed starting, noise, vibration, and transmission fluid leaks. In some cases, an emergency mode or failure to shift into a selected gear may also occur. Such symptoms should be checked against the condition of the oil, controls, and hydraulic components.

How to prepare an automatic transmission for installation?

Before installation, check the compatibility of markings, the condition of the housing, mounting points, connectors, and associated accessories. It is also good practice to check seals, oil cooling, and control elements. This makes installation smoother and reduces the risk of mismatch.

Automatic gearboxes

At Global Parts, we offer a wide selection of original used car parts, including automatic transmissions for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Our automatic transmissions undergo quality control to ensure you receive a top-quality product.

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Mercedes W203 W204 W210 W211 W212 Automatic Gearbox 722696 A2042708300 WARRANTY

€664.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2473700900

Mercedes W177 V177 AMG A35 4MATIC Automatic Gearbox 724045 A2473700900 WARRANTY

€1,234.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2463708101

Mercedes W176 W246 Automatic Dual Clutch Gearbox 724003 A2463702102 WARRANTY

€1,092.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042705303

Automatic Gearbox Mercedes W204 C207 W212 722906 722.906 A2047205505 WARRANTY

€522.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A7252704412

Mercedes W205 Automatic Gearbox 725018 725.018 A2052705902 WARRANTY

€664.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2532702601

Mercedes W213 X253 4Matic Automatic Gearbox 725058 725.058 2532702601 WARRANTY

€1,709.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042705305

Automatic Gearbox Mercedes W204 C207 W212 722906 722.906 2042703205 WARRANTY

€522.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042709202

Automatic Gearbox Mercedes W204 W211 W212 722903 722.903 A2042704305 WARRANTY

€541.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1642700202

Mercedes ML W164 300 CDI Automatic Gearbox 722902 722.902 1642700102 WARRANTY

€854.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2463703702-1

Mercedes W117 W176 W246 Automatic Dual Clutch Gearbox 724003 2463703702 WARRANTY

€1,234.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A7252701414

Mercedes W205 Automatic Gearbox 725008 725.008 A2572700100 WARRANTY

€446.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2182702902

Mercedes C218 CLS 350CDI Automatic Gearbox 722.903 722903 2182701702 WARRANTY

€1,139.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1662705500

Mercedes ML W166 63 AMG Automatic Gearbox 722905 722.905 1662704900 WARRANTY

€1,662.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A9072706400

Mercedes Sprinter W907 Automatic Gearbox 725005 725.005 9072706400 WARRANTY

€1,472.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2302700500

Automatic Gearbox Mercedes W220 S350 SL R230 SL350 726.444 A2302700500 WARRANTY

€626.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2052706501

Automatic Gearbox Mercedes W204 W205 W212 722908 722.908 2052705501 WARRANTY

€569.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2052707201

Automatic Gearbox Mercedes W204 W205 W212 722995 722.995 2052706201 WARRANTY

€569.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A7252707014

Mercedes W205 Automatic Gearbox 725008 725.008 A2572700000 2572700000 WARRANTY

€664.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A7252705213

Mercedes W205 C200 Automatic Gearbox 725048 725.048 2132701902 WARRANTY

€759.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2132700202

Automatic Gearbox Mercedes W213 C238 4MATIC 725045 725.045 A2132700103 WARRANTY

€1,899.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1662701802

Automatic Gearbox Mercedes W204 C207 W212 722903 722.903 A1662700802 WARRANTY

€1,377.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1712706000-1

Automatic Gearbox Mercedes W204 W211 W212 722906 722.906 A1712705300 WARRANTY

€569.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2052704602

Mercedes W205 Automatic Gearbox 722995 722.995 A2052704002 WARRANTY

€474.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1712709700

Mercedes SLK55 R171 AMG Automatic Gearbox 722907 722.907 1712703700 WARRANTY

€2,089.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2122708008

Automatic Gearbox Mercedes W204 W212 W221 722908 722.908 A2122708009 WARRANTY

€474.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2572702100

Mercedes W205 X253 Automatic Gearbox 725008 725.008 A2572702100 WARRANTY

€759.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A6392703500

Mercedes W639 Automatic Gearbox 722686 722.686 A6392703500 WARRANTY

€1,852.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2312709900

Mercedes R231 SL 400 M276 Automatic Gearbox 722904 722.904 2312709400 WARRANTY

€1,234.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2052704802-1

Mercedes W205 C200 BlueTec Automatic Gearbox 722993 722.993 A2052703502 WARRANTY

€598.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2122708601

Mercedes W204 W212 W221 Automatic Gearbox 722906 722.906 2122701902 WARRANTY

€759.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2512705801

Mercedes ML W164 R W251 Automatic Gearbox 722903 722.903 A2512705201 WARRANTY

€949.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2132701703

Mercedes W205 C300DE Hybrid Automatic Transmission 725017 2132701703 WARRANTY

€1,462.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A6392701500

Mercedes W639 Automatic Gearbox 722683 722.683 A6392701500 A6392701300 WARRANTY

€1,567.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2052701202

Mercedes W205 Hybrid Automatic Gearbox 724295 724.295 A2052701202 WARRANTY

€474.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042706902

Automatic Gearbox Mercedes W204 C207 W212 722997 722.997 A2042702905 WARRANTY

€949.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2122708401

Automatic Gearbox Mercedes W204 W211 W212 722902 722.902 2122702302 WARRANTY

€431.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042701806

Automatic Gearbox Mercedes W204 C207 W212 722995 722.995 2042701706 WARRANTY

€398.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1662700902

Mercedes W164 W204 C207 Automatic Gearbox 722908 722.908 1662709901 WARRANTY

€854.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1693702400

Mercedes W169 W245 A150 A160 B150 B160 Automatic Gearbox 722801 722.801 WARRANTY

€1,424.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042705601

Automatic Gearbox Mercedes W204 C207 W212 722997 722.997 2042702705 WARRANTY

€474.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2212704430

Mercedes W204 C207 W212 Automatic Gearbox 722902 722.902 2212700930 WARRANTY

€550.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2182703202

Mercedes C218 CLS 250CDI Automatic Gearbox 722.908 2182702002 WARRANTY

€664.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2132707102

Automatic Gearbox Mercedes W213 C238 X253 725045 725.045 A2132705702 WARRANTY

€1,709.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A7252704512

Mercedes R172 SLC 43 AMG Automatic Gearbox 725018 725.018 A1722708800 WARRANTY

€645.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2032704500

Mercedes W203 C 200 220 CDI 2.2 5 Speed Automatic Gearbox 722699 WARRANTY

€474.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2062703701

Mercedes W206 C200 M254.915 Automatic Gearbox 725.113 A2062703701 WARRANTY

€1,519.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042703100

Mercedes W204 C209 W212 Automatic Gearbox 722999 722.999 A2042701300 WARRANTY

€332.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2112704202

Mercedes W204 W211 W212 Automatic Gearbox 722902 722.902 A2042700003 WARRANTY

€427.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2463704103

Mercedes W176 W246 OM651 Automatic Gearbox 724.003 724003 2463704103 WARRANTY

€1,115.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1712706000

Automatic Gearbox Mercedes W204 W211 W212 722906 722.906 A1712705400 WARRANTY

€617.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2132706503

Automatic Gearbox Mercedes GLC C253 X253 725047 725.047 A2132706503 WARRANTY

€1,709.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2302703000

Mercedes R171 R230 W211 W212 Automatic Gearbox 722.904 2302704600 WARRANTY

€683.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. 1712706500

Mercedes A209 M272.960 Automatic Gearbox 722.906 722906 1712706500 WARRANTY

€655.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A7252707814

Automatic Gearbox Mercedes W213 C238 C253 725015 725.015 A2132705902 WARRANTY

€854.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2132709701

Automatic Gearbox Mercedes W213 X253 4MATIC 725058 725.058 A2532701301 WARRANTY

€1,139.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2512701101

Mercedes R320 W251 OM642 4Matic Automatic Gearbox 722.902 2512703300 WARRANTY

€949.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1662701602

Mercedes W166 ML63 4-Matic 722905 722.905 Automatic Gearbox 1662700602 WARRANTY

€1,424.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042704101

Mercedes W204 Automatic Gearbox 722618 722.618 2122707200 WARRANTY

€645.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2202701000

Mercedes C208 W220 M113 Automatic Gearbox 722632 722.632 2202702100 WARRANTY

€826.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042707102

Mercedes W204 W212 W221 Automatic Gearbox 722908 722.908 A2042704005 WARRANTY

€522.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. 2072701600

Mercedes W204 C207 C219 OM642 Automatic Gearbox 722902 2072701600 WARRANTY

€474.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2052706601

Mercedes W204 W205 W212 Automatic Gearbox 722908 722.908 A2052705601 WARRANTY

€569.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2463703502

Automatic Gearbox Mercedes X156 W176 724001 Dual Clutch A2463703502 WARRANTY

€1,044.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A9072700200

Mercedes W907 Automatic Gearbox 722908 722.908 A9072700200 A9072701000 WARRANTY

€360.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1712709600-3

Mercedes R171 W204 W212 Automatic Gearbox 722906 722.906 2112704001 WARRANTY

€664.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042704901

Mercedes W204 W211 W212 Automatic Gearbox 722902 722.902 A2042706801 WARRANTY

€379.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A7252704918

Mercedes GLC 220d C253 4Matic Automatic Gearbox 725.058 A2532704001 WARRANTY

€778.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2052703901

Mercedes W205 Automatic Gearbox 722993 722.993 A2052703801 WARRANTY

€949.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2052708602

Mercedes W205 C43 AMG 4-Matic Automatic Gearbox 725.048 2052708602 WARRANTY

€1,424.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2042705100

Mercedes C207 E350 CGI Automatic Gearbox 722.906 722906 2072701400 WARRANTY

€997.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. 2052704102

Mercedes C205 C63 AMG M177 Automatic Gearbox 722930 722.930 2052704102 WARRANTY

€1,424.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2512701901

Mercedes R W251 OM642 Automatic Gearbox 722902 722.902 A2512709200 WARRANTY

€892.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1402709400

Mercedes C140 CL420 Automatic Gearbox 722622 722.622 A1402709400 WARRANTY

€664.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1712707200

Mercedes W203 W204 W211 W212 R171 Automatic Gearbox 722999 A1712706900 WARRANTY

€598.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A2312700501

Mercedes R231 SL63 AMG Automatic Gearbox 722931 722.931 A2312709700 WARRANTY

€2,374.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A1662707501

Mercedes W166 ML250 OM651 Automatic Gearbox 722908 722.908 1662706501 WARRANTY

€1,424.95

Free delivery: Jul 8 – 13

If paid before 14:00

Part no. A0002703900

Mercedes W177 Mechatronics Control Unit Automatic Gearbox 724.033 A0002703900

Product currently unavailable

Part no. A2512707000

Mercedes W251 Automatic Gearbox 722902 722.902 A2512706900 WARRANTY

Product currently unavailable

Part no. A2032704700

Mercedes W203 W211 Automatic Gearbox Transmission 722699 A2032704700 WARRANTY

Product currently unavailable

Part no. A2042707500

Mercedes W204 W212 C 180 200 E 200 CDI Automatic Gearbox 722694 722.694 WARRANTY

Product currently unavailable

Part no. A1642707702

Mercedes ML W164 300 CDI Automatic Gearbox 722902 722.902 1642707002 WARRANTY

Product currently unavailable

Part no. A2042709102

Mercedes W204 W212 Automatic Gearbox 722908 2042703705 2072708900 WARRANTY

Product currently unavailable

Part no. A1642706002

Mercedes ML W164 Automatic Gearbox 722902 722.902 A1642706002 WARRANTY

Product currently unavailable

Part no. A2463703702

Mercedes W176 W246 W117 7-Speed Automatic Dual Clutch Gearbox 724003 WARRANTY

Product currently unavailable

Part no. A1712708700

Mercedes W203 W204 A209 M272.940 Automatic Gearbox 722.999 1712707800 WARRANTY

Product currently unavailable

Part no. A7003702700

Mercedes W177 Automatic Gearbox Dual Clutch 700423 700.423 A7003702700 WARRANTY

Product currently unavailable

Part no. A2463708602

Mercedes W176 W246 Automatic Dual Clutch Gearbox 724003 A2463705800 WARRANTY

Product currently unavailable

Part no. A7003702800-1

Mercedes W177 Automatic Gearbox Dual Clutch 700422 700.422 A7003702800 WARRANTY

Product currently unavailable

Part no. A1642701601

Mercedes-Benz ML W164 Automatic Gearbox 722902 722.902 A1642700301 WARRANTY

Product currently unavailable

Part no. A2212703630

Automatic Gearbox Mercedes W204 C207 W212 722903 722.903 2122705803 WARRANTY

Product currently unavailable

Part no. A7252704407

Mercedes-Benz E-Class A207 350 BlueTec Automatic Gearbox 725001 725.001 WARRANTY

Product currently unavailable

Part no. A1712707100

Mercedes W203 W204 W211 W212 CL203 Automatic Gearbox 722906 A1712706400 WARRANTY

Product currently unavailable

Part no. A2202704801

Mercedes W210 W220 W211 320 CDI Automatic Gearbox 722626 A2112708000 WARRANTY

Product currently unavailable

Part no. A2112706301-1

Mercedes W203 W204 W211 W209 C209 Automatic Gearbox 722640 722.640 WARRANTY

Product currently unavailable

Mercedes R171 W204 W212 Automatic Gearbox 722906 722.906 A1712704300 WARRANTY

-10%

Part no. A1712709600-2

Mercedes R171 W204 W212 Automatic Gearbox 722906 722.906 A1712704300 WARRANTY

Product currently unavailable

Part no. A2112706201

Mercedes W204 W211 W212 Automatic Gearbox 722902 722.902 2112706101 WARRANTY

Product currently unavailable

Part no. A2112703300

Mercedes W203 W204 W211 W212 C209 Kompressor Automatic Gearbox 722695 WARRANTY

Product currently unavailable

Part no. A2463704102

Mercedes-Benz W176 W246 7-Speed Automatic Dual Clutch Gearbox 724020 WARRANTY

Product currently unavailable

Part no. A2042708600

Mercedes W204 C320 CDI Automatic Gearbox 722902 722.902 A2042708600 WARRANTY

Product currently unavailable

Showing 1-99 of 214 products

Top-class automatic transmissions – smooth driving in all conditions

Innovative solutions in automatic transmissions - reliability that gives you an advantage on the road

Automatic transmissions are technologically advanced drivetrain components that ensure smooth gear shifting without the need for manual operation. They make driving more comfortable and efficient, both in city traffic and on long journeys. In the Global Parts automotive store, you will find a wide selection of used car parts, including automatic transmissions, ideal for brands such as BMW, Audi, Mercedes, Volkswagen, Mini, and others. According to the detailed definition, an automatic transmission (AT) is an assembly of planetary gears, hydraulic clutches, a torque converter, and a control module (mechatronics). Its task is to automatically select gear ratios, which affects driving smoothness and optimizes fuel consumption. Notable types include classic transmissions (hydraulic), CVT (continuously variable), DSG/S tronic (dual-clutch), and Tiptronic (with manual shifting capability).

What functions do automatic transmissions perform?

Automatic transmissions are complex devices that perform key functions in a vehicle's drivetrain:

Automatic gear shifting – The transmission adjusts gear ratios to driving conditions, ensuring optimal use of engine power.
Improved driving comfort – By shifting gears smoothly, it eliminates the need for manual clutch and gear lever operation.
Fuel economy – Modern automatic transmissions adjust gear ratios to optimize fuel consumption.
Integration with other vehicle systems – The automatic transmission works with safety systems such as ESP or cruise control, increasing stability and driving comfort. Examples of applications:
The Mercedes Sprinter 906 was equipped with NAG1 (722.6) and 7G-Tronic (722.9) transmissions, depending on the CDI engine version.
The Audi A6 Quattro often featured 6- and 8-speed Tiptronic transmissions, matched to the all-wheel-drive system.

Construction and purpose of automatic transmissions

Automatic transmissions are assemblies mounted between the engine and the drivetrain, responsible for transmitting torque and selecting gear ratios without driver intervention. A typical construction includes a housing, a converter or clutches, a gear set, hydraulic controls, and electronics. When selecting a unit, the OEM number, transmission type, fuel type, and interchangeable numbers available in the product offer are of great importance.

Comparison of popular automatic transmission types

Transmission type	Construction	Operating characteristics	What to check before selection
Classic AT	Torque converter, planetary gears, hydraulics, and control	Smooth gear shifting, good compatibility with more powerful engines	OEM number, transmission code, engine version, and mounting type
DSG / S tronic	Dual clutch, mechatronics, automated gearbox	Fast response and short shift times	Controller compatibility, accessories, and software version
CVT	Continuously variable system with belt or chain and hydraulic control	Very smooth acceleration without classic gear steps	Fuel type, variant code, and compatibility with half-shafts
Tiptronic	Hydraulic automatic with manual gear selection function	Combines automatic convenience with driver control	Vehicle version, selector control, and drivetrain compatibility

Why is it worth taking care of automatic transmissions?

Malfunction or neglect of automatic transmission maintenance can lead to serious drivetrain problems. Typical symptoms of failure include:

Jerking during gear changes – May indicate problems with the torque converter or worn transmission fluid.
Delays in gear shifting – Point to possible damage to the mechatronics or hydraulic transmission components.
Noise and vibration – Mechanical problems in the transmission can cause disturbing sounds during operation.
Transmission fluid leaks – Leaks in the transmission can lead to reduced performance and serious damage. At Global Parts, we offer used automatic transmissions that have undergone detailed quality tests, ensuring their durability and reliability.

The role of mechatronics and associated components

Mechatronics is an integrated module combining electronic control with transmission hydraulics. It is responsible for gear selection, operating pressure, and communication with other vehicle systems. For parts such as mechatronics 6hp19, it is worth comparing the OEM number, variant designation, and compatibility with the controller and wiring harness, as well as checking related components such as transmission control units and transmission sensors.

How to choose the right automatic transmission?

When choosing automatic transmissions, you should pay attention to several key aspects:

Matching the vehicle model – Every drivetrain has its specific technical requirements. At Global Parts, you will find automatic transmissions perfectly matched to BMW, Audi, Mercedes, Volkswagen, Mini, and others.
Technical condition – Used transmissions should be free from mechanical damage and leaks, and their hydraulic and electrical components should be fully functional.
Transmission type – Choose the appropriate transmission type (classic automatic, CVT, DSG, Tiptronic) depending on the vehicle's equipment. Compatibility can be confirmed based on the OEM number or the vehicle's VIN. For example, the 722.6 transmission used in the Sprinter 906 came in many variants, differing in gear ratios and software. Therefore, matching it to the specific engine version and production year is always crucial.

Selection by markings, accessories, and vehicle version

When selecting elements for a version such as ga6hp19z, it is good to verify the transmission code, fuel type, and compatibility with the selector and half-shafts. An automatic transmission is used to transfer drive in a strictly defined configuration, which is why interchangeable numbers and vehicle equipment are also important. When choosing, related categories such as torque converters and oil coolers and lines are often helpful.

Why choose used automatic transmissions?

Used car parts, such as automatic transmissions, are a practical solution that allows for savings while maintaining high quality. By choosing used automatic transmissions, you gain:

Lower costs – Used transmissions are significantly cheaper than new ones but offer equally high quality.
Ecology – Recycling car parts supports environmental protection and reduces waste.
Wide selection – In our store, you will find automatic transmissions for the most popular car brands.

Practical symptoms and verification scope before installation

The torque converter is an intermediary element between the engine and the transmission that enables starting and smooth torque transfer without a classic clutch. When vibrations, delays when starting, or irregular gear changes occur, it is worth checking not only the transmission itself but also the accessories and mounts. When choosing an element like BMW E90 320d transmission, it is crucial to compare the OEM part number, housing type, connectors, and compatibility with drivetrain accessories.

How to take care of automatic transmissions?

To ensure automatic transmissions work reliably for a long time, it is worth following a few rules:

Regularly change the transmission fluid and filters according to the manufacturer's recommendations to ensure proper lubrication and system cleanliness.
Avoid overloading the vehicle, especially when driving with heavy loads, to prevent transmission overheating.
Monitor any symptoms of malfunction, such as noise, vibration, or delays in gear shifting, and respond to them in a timely manner. If a replacement is needed, at Global Parts you will find suitable used auto parts that will restore full functionality to your drivetrain. The selection process can also be supplemented by the guide Why it is worth buying used transmissions and engines – facts instead of myths, which describes practical rules for verification by VIN and OEM number.

FAQ

Question	Answer
What is the construction and purpose of automatic transmissions?	Automatic transmissions are drivetrain assemblies mounted between the engine and subsequent drivetrain components. Their typical construction includes a housing, a gear set, a hydraulic system, electronic controls, and a torque converter or clutch packs. The transmission's task is to select the gear ratio according to driving speed and engine load without manual shifting by the driver.
What are automatic transmissions used for?	Automatic transmissions are used for smooth torque transfer and automatic gear shifting while driving. In practice, they affect the comfort of starting, accelerating, and driving in traffic jams, as well as cooperation with vehicle electronics. Without a properly functioning transmission, there may be delays in drivetrain response, jerking, or reduced vehicle performance.
What is the construction and function of a torque converter?	A torque converter is a hydrodynamic element connecting the engine to the automatic transmission. It consists of a housing, a pump impeller, a turbine, and a stator, and in many versions, also a lock-up clutch. Its function is to smoothly transfer drive during starting and to dampen sudden load changes.
How to check the compatibility of an automatic transmission with a vehicle?	The most reliable method is to compare the OEM number, transmission code, interchangeable numbers, and vehicle data via VIN. It is also worth verifying the fuel type, engine version, drivetrain type, and associated accessories, e.g., the controller or selector. This information helps avoid incompatibility during installation.
What symptoms indicate problems with an automatic transmission?	The most common symptoms include jerking during gear changes, delayed starting, noise, vibration, and transmission fluid leaks. In some cases, an emergency mode or failure to shift into a selected gear may also occur. Such symptoms should be checked against the condition of the oil, controls, and hydraulic components.
How to prepare an automatic transmission for installation?	Before installation, check the compatibility of markings, the condition of the housing, mounting points, connectors, and associated accessories. It is also good practice to check seals, oil cooling, and control elements. This makes installation smoother and reduces the risk of mismatch.

Summary: automatic transmissions at the Global Parts automotive store

Automatic transmissions are technologically advanced components that ensure comfort and driving smoothness in all conditions. The Global Parts offer includes used components matched to cars from brands such as BMW, Mercedes, Audi, and others, and you can rely on the OEM number, interchangeable numbers, and vehicle data when choosing. We invite you to contact us – we are here to help you! For more information and interesting facts, we also invite you to visit our automotive blog.

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