Inner CV joints for Audi A4 B9
Find the right inner CV joint for your Audi A4 B9, whether front-wheel drive or equipped with quattro all-wheel drive. Our range covers components tailored to the extensive engine...
Products for Inner CV joints for Audi A4 B9
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Inner
- Inner splines: 34
- Outer splines: 123
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 84 mm
- Splines wheel side: 24
- Position: Front, Inner
- Total length: 84 mm
- Splines wheel side: 24
- Position: Front, Inner
- Total length: 84 mm
- Splines wheel side: 24
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
Inner CV joints for Audi A4 B9
Inner CV joints for Audi A4 B9 are critical driveline components that demand exacting precision. This generation of the A4, known as the B9, places severe demands on component durability, particularly given the high-torque TDI and TFSI engines frequently fitted to these cars. An inner CV joint is mounted closest to the gearbox, and its primary role is to allow the drive shaft to move up and down in line with suspension travel while transmitting power from the engine out to the wheels. Choosing the correct component for your specific Audi A4 B9 is vital to maintaining the smooth, vibration-free ride that characterises this model. At the first sign of wear, you should act quickly to prevent consequential damage to the gearbox output shafts or bearings.
What does the inner CV joint do on an Audi A4 B9?
The inner CV joint on an Audi A4 B9 acts as a flexible link between the gearbox output shaft and the driveshaft itself. Unlike the outer constant velocity joint, which sits at the wheel and must accommodate large steering angles, the inner joint's main task is to handle axial displacement and vertical movement. As the car travels over road irregularities, the physical distance between the gearbox and the wheel hub changes constantly. Here, the inner joint steps in to compensate for this variation in length thanks to its telescopic action. Without a properly functioning inner joint, the drivetrain would be subjected to immense strain with every suspension movement, rapidly leading to mechanical failure in either the gearbox or the suspension. The inner joint is therefore essential for both ride comfort and mechanical integrity.
Common signs of wear
Wear in an inner CV joint on an Audi A4 B9 often manifests differently from an outer joint failure. The most typical symptom is vibration that occurs specifically under acceleration, frequently at speeds between 70 and 100 km/h. These vibrations are felt throughout the bodyshell and seat rather than solely in the steering wheel, which is a crucial distinction. Another common sign is a dull thud or clunking sound when coming off the accelerator or changing gear, indicating play within the joint's internal mechanism. If the CV boot protecting the joint has split, grease can escape and dirt can penetrate, causing the joint to run dry and wear out exceptionally quickly. It is therefore vital to inspect the boots during every service to prevent expensive repairs to the entire drivetrain later on.
How to choose the correct inner CV joint
To choose the correct inner CV joint for your Audi A4 B9, you need to consider several technical specifications that differ between model variants. The number of splines—the teeth on both the inside and outside of the joint—can vary depending on whether the car features a manual gearbox or an S-tronic dual-clutch transmission. Furthermore, the joint diameter and its mounting flange at the gearbox can differ between front-wheel drive and quattro models. The most reliable way to find the right part in our range is to filter by your car's make, model and engine. This narrows down our 16 matching products so you see exactly what fits your specific vehicle configuration. We also recommend checking whether it is more economical to replace your complete Drive shafts for Audi A4 B9 if you find extensive wear across multiple areas.
Related parts to inspect
Be sure to check these exact pages for the same vehicle when working on the inner CV joint:
When one drivetrain component shows wear, adjacent parts on the same car often require inspection as well. Comparing these exact pages for the Audi A4 B9 makes it easier to establish whether the fault lies in the inner CV joint itself or in an adjacent section of the power transmission system.
This is particularly relevant on models where vibration, play and noises can shift symptoms across several components within the same drivetrain. A quick check of related categories minimises the risk of replacing the correct part type while overlooking an adjacent component that contributes to the very same issue.
By proactively replacing worn components and ensuring the CV boots remain intact, you will considerably extend the working life of both the gearbox and differential.
Why shop with CVJoint24?
CVJoint24 is the international shop of a Swedish driveline specialist, with an uncompromising focus on technical quality and precise fitment. We understand that your Audi A4 B9 demands high-precision parts to perform at its best and retain its premium feel. By pairing our technical expertise with extensive stock held at our Swedish warehouse, we provide fast delivery across the EU and dependable purchases for DIY mechanics and professional garages alike. Selecting your vehicle by make, model and engine ensures complete peace of mind, delivering the correct car parts to your door without hassle. We are your partner for everything from Inner CV joints to complete drive shafts and propeller shafts, and we never compromise on the quality of our range.
Frequently asked questions about inner CV joints for Audi A4 B9
What are the most common symptoms of a faulty inner CV joint on an Audi A4 B9?
The most common symptom is body vibration during acceleration, especially at higher speeds. Unlike outer CV joints, which click when cornering, worn inner joints typically cause shuddering that can be felt throughout the entire car.
Can I replace just the inner CV joint, or do I need to replace the complete drive shaft?
On the Audi A4 B9, it is often possible to replace only the inner CV joint if the rest of the drive shaft is in good condition. However, if the shaft has covered many kilometres or the outer joint is also worn, replacing the complete drive shaft can be more cost-effective.
How do I know which inner CV joint fits my Audi A4 B9?
The easiest and most reliable way is to select your car's model, year and engine variant in our search filter. Because specifications such as spline count and diameter vary between different engines and gearboxes, matching your vehicle details ensures you get the exact right part.
Why does my Audi A4 B9 vibrate under acceleration?
Vibrations under acceleration are often caused by internal wear in the inner CV joint or by grease leaking out. When the joint is placed under load during acceleration, it creates an imbalance that travels through the drivetrain and into the car's body.
Is there a difference in inner CV joints between front-wheel drive and quattro models?
Yes, dimensions and mountings can differ between front-wheel drive and quattro models. It is therefore vital to verify your vehicle's specific drivetrain before placing an order.
How often should I inspect the boots on my inner CV joints?
We recommend inspecting the CV boots at every oil service or at least once a year. A split or torn boot is the most common reason an inner CV joint fails prematurely.