BMW X1 Series E84 Transfer Case Box Transmission ATC350 7610584 DAMAGE

BMW X1 Series E84 Transfer Case Box Transmission ATC350 is an original drivetrain component designed for xDrive models. This is a factory BMW transfer case, ideal as a base for remanufacturing, sourcing internal parts, or for structural comparison when diagnosing other components. The product is offered in "For parts or not working" condition, which means it is not intended for direct installation without prior service work.

Specifications and technical data

• SKU: 7643748-1
• Mark: BMW (Genuine OE)
• Condition: For parts or not working
• OEM Part Number: 7643748
• Substitutable numbers: 27107643748, 7643748, 27107635755, 27107599257, 27107610584, 27107619176, 27107609194, 27107607638, 27102210717, 27107639266, 27107601813, 7635755, 7599257, 7610584, 7619176, 7609194, 7607638, 2210717, 7639266, 7601813
• Category: Transfer Cases

Purpose and function in the BMW X1 E84 drivetrain

The ATC350 transfer case is responsible for transferring torque between the axles in the xDrive system, working in conjunction with the main transmission and drive axles. In the BMW X1 E84, it plays a key role in:

• distributing drive between the front and rear axles,
• stabilizing traction in varying road conditions,
• maintaining predictable vehicle behavior during acceleration and engine braking.

For workshops specializing in 4x4 drive systems and BMW X1 E84 users, the ATC350 transfer case is a valuable source of structural elements, housings, gears, or components for further processing.

Use as a parts donor and base for remanufacturing

Due to its condition, classified as intended for parts, the ATC350 transfer case is primarily suitable as:

• a base for professional remanufacturing at a specialized service center,
• a donor for selected mechanical elements and the housing,
• a reference model for verifying structural compatibility in other units.

This solution is particularly beneficial for workshops that deal with xDrive system repairs on a daily basis and require a complete casing or a set of parts to rebuild another transfer case.

Compatibility and interchangeable numbers

The offered transfer case belongs to the ATC350 group used in the BMW X1 E84, and its design is linked to a wide range of part numbers and interchangeable numbers. Consequently, it can be used in various equipment configurations within the same drivetrain family, provided it is correctly verified for compatibility by a mechanic or parts department.

Before purchasing, it is recommended to compare the OEM number and reference numbers with the vehicle data to confirm technical compatibility. This approach minimizes the risk of mismatch and facilitates the planning of the remanufacturing or dismantling process.

Technical condition and installation recommendations

The "For parts or not working" condition means that the transfer case should not be treated as a ready-to-install component. In practice:

• it requires full verification under workshop conditions,
• it may require the replacement or machining of many internal components,
• it is intended primarily for specialists involved in the repair and remanufacturing of drivetrain systems.

For end users, it is recommended to commission the assessment and potential rebuilding of the transfer case to a specialized service center that will ensure proper installation procedures, clearance adjustments, and leak testing.

Technical support and selecting the right transfer case

If you are considering whether, in your case, it would be a better solution to remanufacture an existing transfer case, purchase a used component, or a complete transmission, our guide on the economics of drivetrain repairs may be helpful. It is worth reading the article "Used transmission – when is it worth it and what you need to remember", which discusses, among other things, cost-effectiveness, compatibility, and the risks associated with purchasing used drivetrain components.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other elements from the same group, such as additional transfer cases, housings, or components for remanufacturing, check out the available parts in the BMW Transfer Cases category.