Manual transmission CAS 2170000644 GS6-17BG BMW E90 E91 E92 E87 52TKM

GS6-17BG (with the specific casting number 2170000644) is a common yet highly sought-after 6-speed manual gearbox, primarily because it is the “workhorse” for BMW’s naturally aspirated 4-cylinder gasoline engines. Finding one with only 52,000 km (52TKM) is quite rare, as many of these donor vehicles have long since passed the 150k mark.

Technical Specifications & Compatibility

This Getrag-sourced unit is designed for precision and fuel efficiency rather than high torque, making it the standard fitment for the N43 and N45 engines.

• Manufacturer: Getrag

• Transmission Code: GS6-17BG

• Casting/Part Number: 2170000644

• Engine Pairing: N43, N45, N46 (1.6L and 2.0L Petrol).

• Chassis Compatibility:

  • 3 Series (E90/E91/E92/E93): 316i, 318i, 320i.

  • 1 Series (E81/E87/E82/E88): 116i, 118i, 120i.

  • X1 (E84): sDrive18i, sDrive20i.

Key Points for Inventory & Quality Assurance

To ensure this unit moves quickly and maintains your brand’s reputation for luxury-grade service, consider these technical highlights:

• Synchronizer Health: This specific gearbox is known for developing “crunchy” second-gear shifts at high mileage. Since this unit has only 52TKM, highlighting the “smooth synchro engagement” is a major selling point.

• The “CAS” Marking: The CAS prefix on the housing helps verify the specific production batch and casting mold, ensuring a perfect “bolt-on” match for owners looking for a direct OEM replacement without modification.

• Output Shaft Seal: While the mileage is low, these seals can dry out over time. Mentioning that the “seals have been inspected for integrity” adds peace of mind for the buyer.