This is the Getrag GS6-45DZ, a highly robust 6-speed manual transmission found in BMW’s modern diesel lineup. With only 47,000 km (47TKM), this unit is in exceptional condition, making it a “Grade A” component for high-end repairs or manual swaps in F-series chassis.

Technical Specifications & Compatibility

The GS6-45DZ was designed specifically to manage the high torque output of the N47 and B47 (2.0L Diesel) engines while offering smoother shift transitions than the earlier GS6-17 or GS6-37 units.

• Manufacturer: Getrag

• Transmission Code: GS6-45DZ

• Engine Pairing: Primarily the N47D20 and B47D20 (2.0L Turbo Diesel).

• Chassis Compatibility:

  • 1 Series (F20/F21): 118d, 120d, 125d.

  • 2 Series (F22/F23): 218d, 220d, 225d.

  • 5 Series (F10/F11): 518d, 520d (LCI models).

  • 3 Series (F30/F31/F34): 318d, 320d, 325d.

Key Points for Inventory & Quality Assurance

When documenting this specific unit for a high-end customer or listing, emphasize these points:

• Synchro Health: At 47TKM, the carbon-lined synchronizers should feel like new. Mentioning “crisp engagement and no gear grind” significantly increases buyer confidence for manual gearboxes.

• Input Shaft Inspection: Ensure the input shaft splines are clean and free of corrosion. Since this is an F-series part, it likely came from a newer donor vehicle, meaning the external seals should still be soft and leak-free.

• Stop-Start Compatibility: These units are designed for vehicles with Auto Start-Stop systems; verify if the neutral position sensor is included, as it’s essential for modern BMW electronics.