Audi A8 4.2 FSI Quattro
Spare parts and drivetrain components for the Audi A8 4.2 FSI Quattro. Select your make, model and engine to ensure a precise fit before ordering.
Products for Audi A8 4.2 FSI Quattro
- Position: Rear, Inner
- Inner splines: 28
- Seal diameter: 76,5 mm
- Total length: 77 mm
- Outer splines: 42
- Position: Front, Inner
- Inner splines: 34
- Seal diameter: 100 mm
- Joint diameter: 85 mm
Audi A8 4.2 FSI Quattro drivetrain
The Audi A8 4.2 FSI Quattro represents the pinnacle of German engineering, combining a potent V8 engine with the legendary Quattro all-wheel-drive system. To deliver this power to the road smoothly and without vibrations, the drivetrain must remain in pristine mechanical condition. The drivetrain in this model is a complex setup engineered to manage high torque loads while delivering supreme stability at all speeds. As a dedicated driveline specialist, we provide the components required to maintain and repair this advanced system with car parts that match or exceed original specifications.
Owning an Audi A8 comes with uncompromising demands for comfort and refined running. Every component in the power transmission, from the gearbox out to the wheel hubs, plays a pivotal role in the driving experience. Worn parts can rapidly degrade vehicle refinement and cause knock-on damage to costly assemblies such as the differentials or gearbox. By selecting the correct spare parts from the start, you ensure that your Audi remains the high-performance machine it was built to be.
How the drivetrain is configured on the Audi A8 4.2 FSI Quattro
The layout of the drivetrain on an Audi A8 4.2 FSI Quattro is built around the longitudinally mounted V8 engine and an automatic gearbox that distributes power via a centre differential. The Quattro system in this generation frequently relies on a Torsen differential or a crown-gear centre differential to distribute power dynamically between the front and rear axles. This setup requires a central propeller shaft running along the underside of the vehicle to drive the rear wheels, while front drive shafts handle power delivery to the front wheels.
Each drive shaft is equipped with both inner and outer CV joints. The outer joints allow the front wheels to steer whilst transferring drive, whereas the inner joints accommodate the axial length changes caused by suspension travel. For a heavy and powerful luxury saloon such as the A8 4.2 FSI, these components are engineered to withstand substantial stress, yet they depend entirely on intact CV boots to protect their precision-ground bearing surfaces from road dirt and moisture.
Common faults and symptoms
One of the clearest warning signs of a driveline issue is noise at full steering lock. If you hear a rhythmic clicking or knocking sound while cornering, it often points to a worn outer CV joint or a split boot. In contrast, vibrations felt through the body shell under acceleration, especially at motorway speeds, are typically caused by a worn inner CV joint or an out-of-balance prop shaft.
Because the Audi A8 features exceptional cabin soundproofing, subtle vibrations can occasionally be tricky to pinpoint, but they should never be left unchecked. An unbalanced propeller shaft can produce a low-frequency droning noise that changes with road speed rather than engine revs. It is also essential to inspect the drive shaft boots regularly; a hairline split quickly allows grease to escape and abrasive dirt to enter, ruining the constant velocity joint in very little time. Early detection prevents expensive garage bills later on.
Common parts to replace on the Audi A8 4.2 FSI Quattro
In our range for the Audi A8 4.2 FSI Quattro, you will find carefully selected components tailored to the most frequent drivetrain repairs. We stock several variations of drive shafts to cover all axle positions, alongside dedicated solutions for both inner and outer CV joints. At the heart of the Quattro setup, we also supply replacement propeller shafts, which are vital as these are often unique to the 4.2 FSI engine and its specific gearbox pairing.
In addition to complete driveshafts, it is common practice to replace individual CV joints if the shaft itself is undamaged. This offers a cost-effective repair that fully restores smooth, quiet running. We also see strong demand for CV boot kits as a proactive way to safeguard the lifespan of existing assemblies. All of our car parts are manufactured to exacting tolerances to meet the rigorous standards expected of a luxury vehicle.
How to find the right part for your Audi A8 4.2 FSI Quattro
Navigate directly to the appropriate component section for the Audi A8 4.2 FSI Quattro:
On a vehicle where several drivetrain faults can share similar symptoms, starting in the correct category is essential. By comparing the specific subcategories for the Audi A8 4.2 FSI Quattro, you can easily distinguish between drive shaft, CV joint and propeller shaft issues, allowing you to proceed to the exact section that matches your diagnosis and fitment needs.
- Drive shafts for Audi A8 4.2 FSI Quattro
- Outer CV joints for Audi A8 4.2 FSI Quattro
- Inner CV joints for Audi A8 4.2 FSI Quattro
- Propeller shafts for Audi A8 4.2 FSI Quattro
Once you have selected the appropriate category, check technical specifications such as the tooth count on the ABS ring or overall shaft length if multiple options are shown. Our customer support team is always on hand to help you verify compatibility against original equipment (OEM) part numbers, giving you total peace of mind. Choosing the right part straight away saves both time and labour costs at the workshop.
Why buy from CVJoint24?
CVJoint24 is not merely an online parts retailer; we are the international shop of a Swedish driveline specialist, with our central warehouse located in Helsingborg, Sweden. For an Audi owner, this means access to dedicated expertise that understands the intricate technicalities of the Quattro system. We stock premium-quality parts and back them with a fitment guarantee, ensuring you receive the correct component every time. Our exclusive focus on drivelines gives us a depth of inventory that general motor factors simply cannot match.
We understand that when an Audi A8 is booked in for repairs, fast dispatch is essential. That is why we work with reliable logistics partners to provide dependable shipping across the European Union. With our commitment to supplying the right component the first time, we ensure your buying experience is as refined as your car's ride. Order from a specialist that knows your vehicle's drivetrain inside out – choose CVJoint24 for quality, confidence and expertise.
Frequently asked questions about drivetrain parts for Audi A8 4.2 FSI Quattro
How do I know if my Audi A8 4.2 FSI Quattro needs a new drive shaft?
The most common symptoms are heavy vibrations under acceleration or a persistent clicking noise when cornering. If the vibrations are felt throughout the entire car rather than just in the steering wheel, it is often an inner CV joint or the drive shaft itself that is unbalanced or worn.
What is the difference between the inner and outer CV joint on an A8?
The outer CV joint sits closest to the wheel and allows for steering movements; it usually wears out first and produces clicking noises. The inner CV joint sits closest to the gearbox or differential and accommodates suspension travel; failure here typically causes vibrations under load.
Do all A8 drive shafts fit the 4.2 FSI Quattro model?
No, the 4.2 FSI Quattro has specific requirements due to its high torque output and the gear ratios of the Quattro system. It is important to select your car's exact make, model and engine variant to find the correct part among our 12 specific items for this model.
Why is it important to replace a split CV boot immediately?
The boot keeps lubricating grease inside the joint and keeps dirt out. As soon as it splits, road salt and grit penetrate, acting as an abrasive and ruining the hardened surfaces of the CV joint within just a few kilometres.
Do you offer propeller shafts for the Audi A8 4.2 FSI?
Yes, we have 3 different propeller shafts specifically for the Audi A8 4.2 FSI Quattro in our range. These come balanced and ready to install to eliminate vibrations throughout the drivetrain.
What does your fitment guarantee mean for Audi parts?
Our fitment guarantee means that if you select your vehicle's make, model and engine in our lookup tool and we unexpectedly send a part that does not fit your Audi A8 4.2 FSI Quattro, we will exchange it for the correct part at no extra cost.