BMW 3 Series E36 316i Petrol M43 Automatic Gearbox 1423661 A4S310R WARRANTY

BMW 3 Series E36 316i Petrol M43 Automatic Gearbox is an automatic transmission designed for petrol units, specifically engineered for the 3 Series E36 with the M43 engine. This used OEM BMW component ensures a factory-fit for the drivetrain, maintaining proper operating characteristics and smooth gear shifting comfort. It is an ideal solution for users looking to restore the efficiency of their BMW's drivetrain while adhering to the original technical specifications.

Specifications and technical data

• SKU: 1423661
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1423661
• Substitutable numbers: 24001423661, 1423661, 24001423245 24001422899, 1423245 1422899
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Other Transmission & Drivetrain

Purpose and compatibility

The A4S310R automatic gearbox was developed for the BMW 3 Series E36 316i with the M43 engine running on petrol. The transmission design is tailored to the torque characteristics of this unit, which translates into predictable vehicle behavior across the entire rev range.

Choosing this gearbox is the right decision whenever the priority is to maintain the original drivetrain configuration without the need for adapting wiring harnesses, control units, or mechanical components. This simplifies the service process and reduces the risk of compatibility issues.

Automatic gearbox characteristics

The automatic transmission in this BMW model ensures smooth gear changes, which improves driving comfort in city traffic and during steady-speed cruising. The design is known for its predictable operation and stable performance under typical road use.

For the user, this means:

• automatic gear selection based on load and speed,
• reduced driver fatigue in traffic jams and on long trips,
• consistent operation with the factory M43 engine control system.

Benefits of using an original BMW transmission

Using an original gearbox dedicated to the E36 316i M43 allows for the preservation of factory drivetrain performance parameters. Proper gear ratios and shifting characteristics are matched to the vehicle's weight, engine power, and factory control software.

In practice, this translates into:

• consistent operation with the existing drivetrain,
• easier diagnostics based on standard BMW procedures,
• the ability to utilize factory mounting points and accessories.

Use in repairs and upgrades

The presented gearbox is suitable both for typical replacement of a worn-out transmission and for restoring a vehicle to its original specification after previous modifications. The used OEM component allows for optimized repair costs while maintaining a design consistent with the manufacturer's project.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other components from the same group, such as driveshafts, mounting elements, or additional transmission parts, check out the available parts in the Other BMW category.

Technical support and additional materials

When selecting drivetrain components – especially in cars with increased power or modified final drive ratios – it is worth considering the relationships between the gearbox, differential, and engine characteristics. It may be helpful to review comparative materials regarding sports versions of models, where differences in drivetrain and chassis construction are discussed in detail, as in the article Audi RS vs other models – what is hidden under the hood and chassis?.