TrakMotive BM-8129 front left CV axle shaft for the 2019 BMW 640i Gran Coupe and other vehicles sends drive torque to the front left wheel. It flexes with suspension travel while it turns.
- Neoprene boots on the inboard and outboard joints
- Male inboard joint with 27 splines
- Outboard spline bolt joint with 37 splines
- Overall compressed length of 561 mm (22.09 in)
Quick facts
- Part: TrakMotive BM-8129 CV axle shaft
- Fits: the 2019 BMW 640i Gran Coupe and other vehicles
- Position: Front left
- Condition: New
A worn front axle can show up as clicking or popping on tight turns, vibration under acceleration or grease thrown from a torn boot. Suspension and steering parts can make similar noises, so with the engine off, look for torn boots and grease spatter near the wheel, and leave anything you cannot see to a shop test before replacing the axle.
Fits
The 2019 BMW 640i Gran Coupe, the 2019 BMW 650i Gran Coupe and the 2015-2019 BMW Alpina B6 xDrive Gran Coupe take this axle, and so do other BMW models; each takes one on the front left. Open the "Vehicles it fits" section to check your exact model and engine. This listing is one front left axle; the front right on that axle is a separate part, and the pair is normally replaced together.
Specifications
Fit and size
- Position: Front left
- Quantity per application: 1 (front left)
- Overall compressed length: 561 mm (22.09 in)
- Inboard joint: male, 27 splines
- Outboard joint: Audi style spline bolt, 37 splines, 1 bolt hole
- Axle bolt: M16x1.5 thread, 84 mm long, 17 mm hex
Build and materials
- Boot material: neoprene on both joints
- ABS tone ring: not included
- Condition: New
- Warranty: TrakMotive limited lifetime warranty
- Country of origin: China
In the box
One front left CV axle shaft. The axle nut is not included, so plan on a new one, since the old nut may not be reusable.
Interchange: 66-9760
305945 · NCV27045 · PR27045 · 31607593043 · 31607618681 · BM10540ER
This part cross-references / interchanges with the following part numbers:
66-9760, 305945, NCV27045, PR27045, 31607593043, 31607618681, BM10540ER, BM-8129
Frequently Asked Questions
Is the TrakMotive BM-8129 front left axle right for the 2019 BMW 640i Gran Coupe?
Yes, TrakMotive BM-8129 fits the 2019 BMW 640i Gran Coupe and the 2015-2019 BMW Alpina B6 xDrive Gran Coupe; open the "Vehicles it fits" section to check other models.
Does the TrakMotive CV axle come with an axle nut?
No, the axle nut is not included, and neither is the ABS tone ring. The old nut may not be reusable, so plan on a new one.
How long is the BM-8129 axle, and how many splines does it have?
TrakMotive BM-8129 measures 561 mm (22.09 in) compressed overall. The male inboard joint has 27 splines and the outboard joint has 37.
Could grease around the wheel mean a torn boot on my front left CV axle?
Yes, it can. Grease thrown from a torn boot is one sign of a worn axle, but clicking on turns can also come from other parts, so a shop can test it.
Does the TrakMotive BM-8129 replace 66-9760?
Yes, 66-9760 is one of the cross-reference numbers this TrakMotive BM-8129 front left axle replaces, and the rest are on the Interchange line.
