Audi A4 Avant S4 Quattro
Spare parts and drivetrain components for Audi A4 Avant S4 Quattro. Confirm fitment by selecting your make, model and engine before ordering.
Products for Audi A4 Avant S4 Quattro
- Position: Front, Outer
- Seal diameter: 76 mm
- Inner splines: 25
- Outer diameter: 85 mm
- Splines wheel side: 42
- Position: Front, Inner
- Inner splines: 24
- Outer diameter: 81 mm
- Splines gearbox side: 24
- Position: Front, Outer
- Seal diameter: 76 mm
- Inner splines: 28
- Outer diameter: 94 mm
- Splines wheel side: 42
- Position: Front right
- Flange diameter: 108 mm
- Total length: 638 mm
- Splines wheel side: 38
- ABS teeth: 45
- Position: Front, Inner
- Inner splines: 26
- Joint diameter: 119 mm
- Splines gearbox side: 28
- Position: Outer
- Seal diameter: 76,5 mm
- Inner splines: 33
- Outer splines: 42
- Joint diameter: 88 mm
- Position: Rear
- Number of joints: 2
- Total length: 1,493 mm
- Position: Rear
- Number of joints: 3
- Total length: 1,604 mm
- Position: Rear
- Total length: 590 mm
- Splines wheel side: 33
- ABS teeth: 45
- Position: Rear, Inner
- Seal diameter: 59,5 mm
- Inner splines: 28
- Total length: 86,5 mm
- Splines gearbox side: 38
Drivetrain for Audi A4 Avant S4 Quattro
The Audi A4 Avant S4 Quattro represents a perfect balance between everyday practicality and sports car performance. To ensure this powerful machine delivers its full potential to the tarmac, a drivetrain in peak condition is essential. Power transmission in an S4 is considerably more complex than in a standard car, as it has to handle higher torque and more aggressive driving under varied conditions. At CVJoint24, we understand the unique demands placed on these components and have curated a range tailored specifically to the needs of the S models. Our selection is carefully chosen to meet or exceed original specifications, which is crucial for maintaining the precision and stability that the Quattro system is renowned for worldwide. Whether you need to replace a worn CV joint or an entire drive shaft, we have the car parts to keep your Audi on the road with maximum grip and minimal wear on related components.
How the drivetrain is engineered on the Audi A4 Avant S4 Quattro
The drivetrain layout of an Audi A4 Avant S4 Quattro is centred around the longitudinally mounted engine and the permanent all-wheel-drive system. Power is sent from the gearbox via a centre differential to both the front and rear axles, creating a symmetrical and balanced power delivery. This means the car is equipped with a robust propeller shaft running along the underside of the vehicle to drive the rear wheels. Up front, drive shafts must handle steering and power delivery simultaneously, placing exceptionally high demands on the outer CV joints. The system is finely tuned to distribute power where it is needed most, requiring every mechanical component, from splines to bearings, to work in complete harmony without play or imbalance. Every part of the Quattro system is a link in a chain where precision is key to the driving experience Audi owners expect.
Common faults and symptoms
Despite Audi's high build quality, the drivetrain is subjected to immense wear, especially on S4 models where performance is often used to the full. One of the most common signs of trouble is a clicking noise on full steering lock during acceleration, which usually indicates that an outer constant velocity joint has started to fail. This is frequently caused by a split CV boot that has allowed dirt in and grease to escape. Vibrations felt through the bodyshell under acceleration can instead point to an inner CV joint with worn bearing tracks. If you experience vibrations at higher speeds that are not related to wheel balancing, the prop shaft or its centre bearing may need attention. Additionally, a damaged ABS ring can trigger fault codes and erratic ABS behaviour, directly compromising both safety and all-wheel-drive efficiency.
Common parts to replace on the Audi A4 Avant S4 Quattro
For the Audi A4 Avant S4 Quattro, we see a clear pattern in which parts most frequently need replacement to maintain reliability and performance. With several variations of driveshafts, these are the most frequently requested components by our customers. Here are the key categories for your vehicle to keep a close eye on during servicing:
- Drive shaft for Audi A4 Avant S4 Quattro – Complete shafts for front and rear to ensure vibration-free running.
- Outer CV joint for Audi A4 Avant S4 Quattro – Including CV boot and mounting hardware for a complete replacement.
- Inner CV joint for Audi A4 Avant S4 Quattro – Essential for eliminating vibrations under heavy acceleration.
- Propeller shaft for Audi A4 Avant S4 Quattro – The central link in the Quattro system, requiring perfect balance.
- ABS ring for Audi A4 Avant S4 Quattro – A small but critical component for the proper operation of vehicle safety systems.
Choosing the correct part is crucial, as the S4 model often features specific spline and flange dimensions compared to standard A4 models, meaning generic parts rarely fit properly.
How to find the right part for your Audi A4 Avant S4 Quattro
Proceed to the relevant section for your Audi A4 Avant S4 Quattro:
On a car with several potential drivetrain issues, it is wise to start in the correct category straight away. By comparing the exact sections for the Audi A4 Avant S4 Quattro, it becomes easier to distinguish between faults in a drive shaft, CV joint or propeller shaft and proceed to the page that best matches your symptoms and fitment.
- Drive shafts for Audi A4 Avant S4 Quattro
- Outer CV joints for Audi A4 Avant S4 Quattro
- Inner CV joints for Audi A4 Avant S4 Quattro
- Propeller shafts for Audi A4 Avant S4 Quattro
- ABS rings for Audi A4 Avant S4 Quattro
Navigating spare parts for a performance car like the Audi A4 Avant S4 Quattro can be challenging due to the numerous technical revisions and chassis updates introduced throughout the model's production run. To ensure you receive a component that fits perfectly, we always recommend selecting your car's exact make, model and engine variant. By filtering your vehicle specifications, our catalogue displays the precise components compatible with your car's chassis, gearbox type and drivetrain configuration. This prevents costly ordering mistakes and saves valuable time in the garage. We have invested significant effort into mapping our database against the specific requirements of the S4 Quattro, giving you total peace of mind that the parts you view are truly engineered for your high-performance Audi. If you are ever unsure, our technical support team is on hand to verify specifications against your vehicle's exact setup.
Why shop with CVJoint24
CVJoint24 is the international shop of a Swedish driveline specialist with its warehouse in Helsingborg, Sweden, shipping quality car parts across the EU. When purchasing components for your Audi A4 Avant S4 Quattro from us, you benefit from dedicated expertise and deep inventory that general auto factors simply cannot match. We provide a fitment guarantee, taking full responsibility that your chosen part fits correctly when you select your vehicle's make, model and engine. With our focus on high product relevance and technical quality, we ensure you receive reliable spare parts built to withstand the demands of an S4 Quattro. Choose a specialist who understands your car's technical complexity – choose CVJoint24 for your next repair and experience the difference in both service and product quality.
Frequently Asked Questions about Drivetrain Parts for Audi A4 Avant S4 Quattro
How do I know if my Audi A4 Avant S4 Quattro needs a new drive shaft?
The most common symptoms are heavy vibrations through the car under acceleration or a rhythmic knocking sound. If the vibrations stop when you lift off the accelerator, this is a clear sign that an inner CV joint or the complete drive shaft is worn.
Do CV joints from a standard Audi A4 fit an S4 Quattro?
Usually not. The S4 model generally features heavier-duty drive shafts and different spline counts and dimensions to manage the higher engine torque. Always select your car's exact model, year and engine details to ensure you get the correct specification.
What causes a clicking noise when cornering in my S4?
This is a classic sign of a worn outer CV joint. It is most commonly caused by a split CV boot, which allows lubricating grease to escape and road dirt to enter the joint, quickly destroying the bearing surfaces.
Are the CV boot and grease included when I buy a CV joint from you?
Yes, when you buy a CV joint for your Audi A4 Avant S4 Quattro from us, it is supplied as a complete kit with a CV boot, high-quality grease, clamps, and any necessary mounting bolts or nuts.
How does a damaged ABS ring affect the four-wheel drive system?
A cracked or corroded ABS ring sends incorrect signals to the vehicle control units. Because the Quattro system and electronic stability programme (ESP) rely on precise wheel speed data, a faulty ring can prevent the four-wheel drive from operating correctly or trigger dashboard warning lights.
Can I replace just the propeller shaft centre bearing, or do I need to replace the entire shaft?
On certain Audi A4 Avant S4 Quattro models, the propeller shaft is designed so that the centre bearing can be replaced separately, whilst others require a complete prop shaft replacement. We supply both solutions depending on your vehicle's specific configuration.