Audi A8 3.7 Quattro
Spare parts and drivetrain components for the Audi A8 3.7 Quattro. Confirm fitment using make, model and engine before ordering.
Products for Audi A8 3.7 Quattro
- Position: Front, Inner
- Inner splines: 34
- Seal diameter: 100 mm
- Joint diameter: 85 mm
Audi A8 3.7 Quattro drivetrain
The Audi A8 3.7 Quattro represents an engineering pinnacle where muscular performance meets sophisticated all-wheel drive. The drivetrain in this model is engineered to handle the torque delivered by the 3.7-litre V8 engine, whilst delivering a vibration-free and quiet driving experience. As driveline specialists, we understand the unique challenges owners face when components begin to wear. We have brought together the most critical car parts so that you can maintain your vehicle's power transmission with absolute precision.
Our range for the Audi A8 3.7 Quattro covers everything from complete drive shafts to specific inner and outer CV joints. Each component is selected to meet or exceed original equipment specifications, which is vital for a vehicle in this class. By focusing on quality and exact fitment, we ensure your car remains safe on the road and that the all-wheel-drive mechanics operate optimally under all conditions.
How the drivetrain is configured on the Audi A8 3.7 Quattro
The drivetrain layout on an Audi A8 3.7 Quattro is a masterclass in German engineering. The engine is longitudinally mounted, meaning power transfers first through the gearbox to a central Torsen differential. From there, power is distributed via a propeller shaft to the rear axle, and via front drive shafts to the front wheels. This setup demands that all components work in perfect harmony to prevent unnecessary wear on differentials and the gearbox.
The front drive shafts feature both inner and outer CV joints that allow the wheels to move vertically and steer whilst transmitting drive. The rear axle uses similar configurations to accommodate suspension travel. Because the Audi A8 is a heavy car with substantial power output, these joints endure significant stress, especially during hard acceleration and cornering. Understanding this complex layout is key to selecting the right spare parts when carrying out repairs.
Common faults and symptoms
When the drivetrain on an Audi A8 3.7 Quattro starts to fail, it typically presents with distinct symptoms. One of the clearest signs of a worn outer CV joint is a clicking or knocking noise clearly audible at full steering lock while driving. This is often caused by a split CV boot, which allows dirt to penetrate and grease to escape, quickly destroying the joint's precision surfaces.
Vibrations through the chassis under acceleration can instead point to issues with an inner CV joint. These vibrations are often felt more through the seat than the steering wheel and can be tricky to diagnose without specialist expertise. If the vibrations are constant and rise with vehicle speed, you should inspect the propeller shaft and its centre bearing. Finally, fault codes or erratic behaviour from the ABS system can often be traced back to a cracked or corroded ABS ring, directly affecting the car's stability and safety systems.
Common parts to replace on the Audi A8 3.7 Quattro
To help you choose, we have categorised the most common components requiring replacement on this model. We see high demand for complete drive shafts, as this is often a more cost-effective solution than replacing individual constant velocity joints during major overhauls. Here are the categories most relevant to your Audi A8 3.7 Quattro:
- Drive shafts: We stock various options covering different axle positions and specifications.
- Outer CV joints: Crucial for steering movement and power transfer at the front wheels.
- Inner CV joints: Mounted at the gearbox or differential to absorb angular and plunging movement.
- Propeller shafts: The central link transmitting torque to the rear wheels within the Quattro system.
- ABS rings: Precision parts that keep your braking and traction control systems functioning properly.
Replacing worn components promptly prevents secondary damage to costlier assemblies such as differentials and gearboxes. Investing in the correct parts safeguards your car's long-term reliability.
How to find the right part for your Audi A8 3.7 Quattro
Go directly to the right category for your Audi A8 3.7 Quattro:
On a vehicle with multiple potential drivetrain faults, starting in the right section saves valuable time. By comparing the exact component areas for the Audi A8 3.7 Quattro, it becomes much easier to distinguish between drive shaft, CV joint or prop shaft issues and proceed to the page that best matches your symptoms and fitment needs.
- Drive shafts for Audi A8 3.7 Quattro
- Outer CV joints for Audi A8 3.7 Quattro
- Inner CV joints for Audi A8 3.7 Quattro
- Propeller shafts for Audi A8 3.7 Quattro
- ABS rings for Audi A8 3.7 Quattro
Pinpointing the exact component for an Audi A8 3.7 Quattro can be challenging given the model's technical complexity and varying trim levels. The most reliable way to navigate our catalogue is to select your vehicle by make, model and engine. This narrows down the parts technically verified for your chassis and driveline, removing any guesswork.
When searching for a specific replacement, always verify whether it is for the front or rear axle, and note whether it fits the left or right side. On Quattro models, it is equally important to check if the part is unique to the four-wheel-drive system. If you are unsure whether you need an entire driveshaft or simply a CV joint, inspect the general condition of the shaft. If the splines or shaft body display severe corrosion, fitting a complete drive shaft is usually the most dependable long-term fix.
Why shop with CVJoint24?
CVJoint24 is the international shop of a Swedish driveline specialist, dispatching orders across the EU from our central warehouse in Helsingborg, Sweden. We combine extensive technical expertise with an inventory tailored to demanding executive cars like the Audi A8 3.7 Quattro. Our priority is to provide top-tier relevance and quality, ensuring you receive parts that fit accurately the first time. We understand that time is critical when your vehicle is in the garage, which is why we prioritise prompt dispatch and swift delivery across Europe.
Our business is built around helping you find the right part immediately. By buying from a dedicated specialist, you gain access to car parts selected for durability and exacting tolerances—indispensable for complex Quattro drivetrains. We take pride in being the trusted choice for drivers across Europe who refuse to compromise on driveline performance. With CVJoint24, your Audi A8 will continue to deliver the effortless performance it was built for.
Frequently Asked Questions about Drivetrain Parts for Audi A8 3.7 Quattro
How do I know whether it is the inner or outer CV joint that is failing on my Audi A8?
A worn outer CV joint typically emits a clicking or knocking noise when turning, whereas a failing inner CV joint usually produces vibrations throughout the car under acceleration. You should also inspect the boots; a split CV boot is a sure sign that the joint will soon fail.
Does the same drive shaft fit both the left and right sides on an Audi A8 3.7 Quattro?
This varies depending on the axle position and model year. On many Audi models, the drive shafts differ in length to compensate for the offset position of the differential. Always filter by your make, model and engine variant to ensure you select the correct part for each side.
Why does my Audi A8 vibrate at higher speeds even though the tyres are balanced?
If the tyres are correctly balanced, the vibrations could be caused by an unbalanced propeller shaft or a worn centre bearing. On a Quattro model, the prop shaft is a critical component of the drivetrain that will cause vibrations if it is damaged or if its joints have started to seize.
Is it difficult to replace an ABS ring on an Audi A8 3.7 Quattro?
It requires removing the CV joint to access the ring. Because the Audi A8 features an advanced multi-link suspension setup, solid mechanical experience and the right tools are recommended. A cracked ABS reluctor ring is a common fault that triggers the ABS/ESP warning light.
Are fitting accessories included when I purchase a CV joint from you?
Yes, our CV joint kits are normally supplied complete with a CV boot, grease, clamps and, where required, a new centre bolt or circlip to ensure a proper installation.
Can I drive with a split CV boot?
It is not recommended. As soon as the boot splits, grease escapes and road dirt enters the joint. This wears out the constant velocity joint very quickly, which can lead to complete failure and leave the car stranded.