Audi A8 6.3 W12 Quattro
High-quality drivetrain parts for the Audi A8 6.3 W12 Quattro. Select your make, model and engine to ensure an accurate fit before ordering.
Products for Audi A8 6.3 W12 Quattro
- Position: Front
- Splines wheel side: 42
- Total length: 495 mm
- Joint diameter: 88 mm
- Joint diameter, gearbox side: 123 mm
- Position: Rear right
- Splines wheel side: 42
- Total length: 576 mm
- Position: Rear
- Splines wheel side: 42
- Total length: 660 mm
- Joint diameter: 99 mm
- Joint diameter, gearbox side: 108 mm
- Position: Inner
- Inner splines: 34
- Total length: 88 mm
- Joint diameter: 123 mm
- Outer splines: 34
- Position: Outer
- Inner splines: 28
- Seal diameter: 76 mm
- Outer splines: 42
- Thread size: M16X1,5
- Total length: 1,856 mm
- Number of joints: 3
- Outer diameter 1: 90 mm
- Outer diameter 2: 99,73 mm
- Bolt circle diameter 2: 86 mm
- Position: Rear
- Total length: 1,675 mm
- Number of joints: 3
- Number of centre bearings: 1
- Position: Rear left
- Splines wheel side: 42
- Total length: 620 mm
- Diameter 2: 108 mm
- Position: Front, Inner
- Inner splines: 24
- Total length: 84 mm
- Joint diameter: 81 mm
- Outer splines: 24
- Position: Front
- Splines wheel side: 42
- Total length: 490 mm
- Joint diameter: 104 mm
- Joint diameter, gearbox side: 123 mm
- Total length: 108 mm
- Inner diameter: 22 mm
- Outer diameter: 80 mm
- Height: 85 mm
- Position: Rear, Inner
- Inner splines: 28
- Seal diameter: 76,5 mm
- Total length: 77 mm
- Outer splines: 42
Audi A8 6.3 W12 Quattro drivetrain parts
The Audi A8 6.3 W12 Quattro represents the pinnacle of German engineering, combining a massive twelve-cylinder engine with the legendary Quattro all-wheel-drive system. To deliver this immense power to the road smoothly and without vibration, the drivetrain must remain in peak mechanical condition. The drivetrain on an Audi A8 equipped with the W12 engine is built to handle considerably higher torque loads than standard models, making the choice of replacement parts crucial. Every component, from the smallest CV joint to the prop shaft, must meet stringent manufacturing tolerances to preserve the car's refined comfort and high performance.
As drivetrain specialists, we understand the specific demands of the Audi A8 6.3 W12 Quattro. We stock the key driveline parts you need to maintain your vehicle with components that match original equipment specifications. Whether you are addressing knocking noises on full lock or chasing highway vibrations, we provide the technical expertise and high-grade parts required to restore your vehicle's factory driving experience.
How the drivetrain works on the Audi A8 6.3 W12 Quattro
The drivetrain on an Audi A8 6.3 W12 Quattro is an advanced permanent four-wheel-drive system. Torque exits the substantial W12 engine through the automatic gearbox and is distributed via a central differential to both the front and rear axles. Power transfer occurs both longitudinally and transversally. Longitudinal drive is managed by the propeller shaft, which runs beneath the centre of the car to send torque to the rear differential. At each corner, drive shafts accommodate suspension travel and steering angles while transmitting constant power to the road wheels.
Because the W12 engine produces exceptional torque, the Quattro driveline components are suitably uprated. Each driveshaft features a heavier-duty bar, and the constant velocity joints are engineered with premium materials to resist high operating temperatures and extreme mechanical stress. The inner CV joint at the gearbox primarily accommodates axial plunge, whereas the outer CV joint at the wheel hub permits the large articulation angles required for steering. Understanding this layout is essential when diagnosing driveline faults.
Common problems and symptoms
Despite the outstanding build quality of the Audi A8 6.3 W12 Quattro, its drivetrain remains subject to normal wear and tear. A classic sign of a worn outer CV joint is a rhythmic clicking or snapping noise that becomes prominent during tight turns at low speeds. If you experience cabin vibrations under hard acceleration instead, excessive play in an inner CV joint is frequently the culprit. Persistent vibrations can also stem from the propeller shaft, particularly if they occur at specific cruising speeds and resonate through the chassis rather than the steering wheel.
A split CV boot is another critical issue that requires immediate attention. Once a rubber boot tears, lubricating grease is flung out while road grit, salt and water penetrate the joint bearings. This abrasive contamination rapidly damages an otherwise sound joint. For Audi A8 6.3 W12 Quattro owners, it is vital to tackle early symptoms promptly, as the sheer power of the W12 engine can quickly turn minor play into a catastrophic mechanical failure.
Common parts to replace on the Audi A8 6.3 W12 Quattro
Our dedicated catalogue for the Audi A8 6.3 W12 Quattro covers the vital components required for a complete drivetrain overhaul. We supply several complete drive shaft options covering the various axle positions of the car. If your original shaft bar remains undamaged, we also provide individual outer CV joints and inner CV joints, allowing for a precise, cost-effective repair without replacing the entire assembly.
In addition to axle components, we stock 2 types of propeller shafts. The prop shaft is frequently overlooked, yet it is essential for smooth, vibration-free power delivery on all-wheel-drive executive saloons such as the Audi A8. By offering these precise categories, we help you pinpoint and rectify any issue in your car's transmission system. Every replacement part is carefully selected to withstand the demanding output of the 6.3-litre W12 powerplant.
Find the right part for your Audi A8 6.3 W12 Quattro
Select the relevant subcategory for your Audi A8 6.3 W12 Quattro:
When troubleshooting an executive car with multiple driveline assemblies, it pays to navigate straight to the right component group. Comparing our dedicated parts categories for the Audi A8 6.3 W12 Quattro makes it easy to differentiate between drive shaft, CV joint and prop shaft issues, guiding you to the products that match your symptoms and technical specifications.
- Drive shafts for Audi A8 6.3 W12 Quattro
- Outer CV joints for Audi A8 6.3 W12 Quattro
- Inner CV joints for Audi A8 6.3 W12 Quattro
- Propeller shafts for Audi A8 6.3 W12 Quattro
Choosing replacement components for an executive performance car such as the Audi A8 6.3 W12 Quattro requires total accuracy. To ensure perfect fitment, filter our catalogue by your vehicle's make, model and engine variant. This matches your car's technical profile directly to verified components, eliminating ordering errors and guaranteeing that your replacement parts feature the correct spline counts, lengths and mounting flanges.
To assist your search, our inventory is organised into distinct sections. You can go straight to the parts you need using the list below:
- Drive shafts for Audi A8 6.3 W12 Quattro
- Outer CV joints for Audi A8 6.3 W12 Quattro
- Inner CV joints for Audi A8 6.3 W12 Quattro
- Propeller shafts for Audi A8 6.3 W12 Quattro
Why choose CVJoint24?
CVJoint24 is the international shop of a Swedish driveline specialist, dispatching high-performance car parts directly from our central warehouse in Helsingborg, Sweden across the entire EU. We combine thorough engineering knowledge with OE-standard components, ensuring your Audi A8 6.3 W12 Quattro gets the durability it requires. When selecting parts by make, model and engine, you can buy with total confidence thanks to our dedicated fitment guarantee.
We recognise that keeping your car roadworthy is paramount. By holding an extensive range of driveline products in stock, we help minimise your garage downtime. Our goal is to make it easy to find the correct component first time at a fair, competitive price. As dedicated driveline specialists, we offer focused technical knowledge and inventory depth that general motor factors rarely match.
Frequently asked questions about Audi A8 6.3 W12 Quattro
How do I know whether the inner or outer CV joint is faulty on my Audi A8 W12?
A worn outer CV joint typically produces a clicking noise when cornering, whereas a failing inner CV joint causes vibrations through the car under acceleration, whether cornering or driving in a straight line.
Can your drive shafts handle the high torque of a 6.3 W12 engine?
Yes, our drive shafts and joints for the Audi A8 6.3 W12 Quattro are specifically selected and engineered to withstand the power and torque delivered by the W12 engine.
Do I need to replace the entire drive shaft if only the boot is split?
No, if you catch a split boot early and the joint has not started making noises, replacing the CV boot and repacking it with fresh grease is usually sufficient. However, if the joint is already noisy, it should be replaced.
Why does my Audi A8 vibrate at higher speeds?
Vibrations at higher speeds in a Quattro model are often caused by imbalance or wear in the propeller shaft or its centre bearing, although worn inner CV joints can also be the culprit.
Are all necessary fitting accessories included when I buy a CV joint from you?
Yes, when you purchase a CV joint from us, it normally includes the CV boot, grease, clamps, and the required mounting bolt or nut to ensure a complete and proper installation.
How does the fitment guarantee work at cvjoint24.com?
Our fitment guarantee means that if you select your car's make, model and engine and we supply a part that does not fit, we will help you find the correct part or process your return at no extra cost.