Manual transmission GS6-45DZ-TH5H TN BMW E90 E91 F20 F21 53TKM

high-demand manual transmission, specifically the Getrag GS6-45DZ (TH5H), known for its robustness in BMW’s diesel lineup. Given the 53,000 km (53TKM) mileage, this unit is considered low-mileage and highly desirable for both replacements and manual conversions.

Technical Specifications & Compatibility

The GS6-45DZ is a 6-speed manual gearbox designed to handle the high torque output of the N47 (2.0L Diesel) engines.

• Manufacturer: Getrag

• Transmission Code: GS6-45DZ – TH5H

• Engine Pairing: Primarily the N47D20 engine.

• Chassis Compatibility:

  • 3 Series (E90/E91): Late-model LCI versions.

  • 1 Series (F20/F21): Early to mid-generation 118d and 120d models.

  • 5 Series (F10/F11): Also found in some 520d configurations.

Key Points for Inventory & Sales

If you are preparing this for a listing or verifying a customer’s order, keep these factors in mind:

• Bell Housing & Input Shaft: Ensure the splines are inspected for wear. At 53TKM, they should be in excellent condition, but it’s a standard check for high-performance diesel parts.

• The “TH5H” Suffix: This specific variant is crucial. While many GS6-45DZ units look identical, the internal gear ratios or the mounting points for the shifter linkage can vary slightly between an E90 and an F20.

• Dual Mass Flywheel (DMF): It is often recommended to pair this with a new or verified DMF, as the N47 engine’s torque can stress the springs over time, even if the gearbox itself is low-mileage.