Original BMW Front Left CV Axle Output Shaft for BMW 640i xDrive Gran Turismo and 740e xDrive (2017–2019)

At 614 mm long, the Original BMW front left output shaft 31-60-8-683-331 is the CV axle that drives the left front wheel on the 2018–2019 BMW 640i xDrive Gran Turismo and the 2017–2019 BMW 740e xDrive. BMW calls it the exchange output shaft, left front. A CV axle carries torque to the wheel while letting the suspension travel and the front wheels steer. It uses a shaft with a constant velocity joint at each end, one at the inboard end and one at the wheel hub, so the axle can cope with changes in angle and length through turns and over bumps. BMW gives the weight as 5.7 kg, or 12.5 lb, and production of this number began in July 2016. It is sold as a single piece.

Original BMW Parts carry a 24-month parts warranty.

BMW's parts data now points to a newer number, 31-60-8-648-149, which supersedes this one for the same position. In BMW's axle diagram for these cars, this shaft is item 1. It belongs to the front axle of the xDrive models and covers the left side only, so the right front shaft is a separate part.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 31-60-8-683-331
• BMW part name: exchange output shaft, left front
• Position: front axle, left side (diagram item 1)
• Length: 614 mm
• Weight: 5.7 kg (12.5 lb)
• Production start: July 2016
• Superseded by: 31-60-8-648-149
• Sold as: one piece
• Warranty: 24 months (Original BMW Parts)

Common Questions

What are the signs of a failing CV axle?
Clicking or popping when turning, most often in sharp turns, is a common sign of a worn or damaged CV joint. Vibration while driving, especially at higher speeds, can point to a bent or damaged shaft or worn joints.

What happens if a CV boot tears?
Grease leaks out, and you may see it on the inside of the wheel or around the joint. The joint then wears faster from the lack of lubrication.

Fitment & Compatibility

Check the table below for the exact year, model, submodel, and any listed notes. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.