BMW E70 LCI E71 Transfer Case Box Transmission ATC45L 7643758 WARRANTY

Listing details

The gearboxes are sold with a 90-day warranty! They were tested before removal and are in full working order.

BMW E70 LCI E71 Transfer Case Box Transmission ATC45L is an original BMW drivetrain component designed for use with the xDrive system in E70 LCI and E71 series models. This component from the Transfer cases group is responsible for the precise distribution of torque between the axles, which translates into stable handling and predictable vehicle behavior in various road conditions. This used transfer case is a sensible choice for drivers looking for factory fitment while maintaining attractive repair costs.

Specifications and technical data

• SKU: 7643758
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7643758
• Substitutable numbers: 27107643758, 7643758, 27107636444, 7636444, 27107619644, 7619644, 27107639273, 7639273, 27107636487, 7636487, 27107629177, 7629177, 27607643762, 7643762, 27607609195, 27607639267, 27607636491, 27607601815, 27607610585, 27607633944, 27607619181, 27607607639, 27607635636
• Category: Transfer Cases

Purpose and function of the ATC45L transfer case

The ATC45L transfer case acts as the central element of the xDrive system, responsible for the dynamic distribution of power between the front and rear axles. This allows the BMW E70 LCI and E71 to maintain stability during acceleration, cornering, and on surfaces with limited traction. Using an original component from the same design family allows for maintaining the correct operating characteristics of the drivetrain, in accordance with the manufacturer's specifications.

Benefits of using an original BMW transfer case

Choosing a transfer case from the BMW Transfer cases group ensures the preservation of the factory geometry and operating parameters of the entire drivetrain. The original design guarantees proper fitment with the automatic transmission and other drivetrain components, which reduces the risk of incorrect installation and accelerated wear. A used OEM component also offers a favorable cost-to-durability ratio, especially when compared to replacements of uncertain origin.

Selection by OEM number and interchangeable numbers

The ATC45L transfer case offers the possibility of precise selection based on the OEM part number and available interchangeable numbers. This allows the component to be matched to a specific engine version and model year of the BMW E70 LCI or E71, minimizing the risk of incompatibility. In practice, this means easier identification of the correct component based on service documentation, manufacturer catalogs, or inquiries via VIN.

Condition, installation, and service application

The offered ATC45L transfer case is a used component, which allows for a significant reduction in repair costs while maintaining original BMW specifications. This type of component is particularly recommended for comprehensive drivetrain repairs when it is necessary to replace a worn or damaged transfer case. Installation should be performed by an experienced service center, following the manufacturer's procedures, including proper oil filling and system adaptation if required.

Technical support and expert knowledge

When selecting a used transfer case for a BMW, it is worth using reliable sources of information and catalog numbers to avoid installation errors. A detailed discussion of the principles of selecting drivetrain components, including transmissions and related parts, can be found in the guide Why it is worth buying used transmissions and engines – facts instead of myths, which explains, among other things, the importance of OEM numbers, verification procedures, and the economic aspects of such repairs.

If you are planning a comprehensive repair or upgrade of the drivetrain in your BMW and need other elements from the same group, such as housings, shafts, or multi-plate clutches, check the available parts in the BMW Transfer cases category.