Inner CV joints for Audi A4 Allroad B9 40 TDI Quattro
This category gathers inner CV joints engineered specifically for the Audi A4 Allroad B9 40 TDI Quattro. By narrowing the selection down to this precise diesel all-wheel-drive model,...
Products for Inner CV joints for Audi A4 Allroad B9 40 TDI Quattro
- 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
Inner CV joints for Audi A4 Allroad B9 40 TDI Quattro
The Audi A4 Allroad B9 40 TDI Quattro is an advanced vehicle engineered to handle both motorways and demanding terrain. This places rigorous demands on the vehicle's drivetrain, where the inner CV joint plays a pivotal role. Because the 40 TDI engine produces substantial torque, the inner joints are subjected to high loads, especially under hard acceleration and over uneven surfaces where the suspension travels actively. Choosing a premium-quality inner CV joint is therefore crucial to maintain the reliability and driving dynamics for which your Audi is renowned.
We supply components tailored specifically to the unique geometry of the B9 platform. The Allroad model features increased ground clearance over the standard saloon and estate variants, meaning the drive shafts operate at steeper, more demanding angles. Our inner CV joints are engineered to withstand these operating conditions without compromising on service life. By investing in the correct parts from a specialist, you guarantee efficient power transfer and prevent premature wear on other components of your Quattro system.
What does the inner CV joint do on the Audi A4 Allroad B9 40 TDI Quattro?
The primary function of the inner CV joint is to transmit power from the gearbox or differential directly to the drive shaft. Unlike the outer CV joint, which is designed primarily to manage steering angles, the inner constant velocity joint accommodates the axial length changes caused by suspension travel. On an Audi A4 Allroad B9 40 TDI Quattro, this is especially vital because the permanent all-wheel-drive system continuously distributes power across all four wheels, requiring seamless and smooth torque delivery.
Inner CV joints on these models are commonly of the tripod joint design, which allows for substantial plunging movement with minimal friction. This is essential for absorbing drivetrain movement without transferring unwanted vibrations into the chassis. A fully functional inner joint reduces mechanical strain on both the gearbox and wheel bearings, extending the lifespan of your vehicle and maintaining the quiet, vibration-free ride expected of a modern Audi.
Common signs of wear
Wear in an inner CV joint can be more subtle than in an outer joint, yet the symptoms are unmistakable once you know what to look for. The most frequent indicator is vibration or shuddering through the body of the car under acceleration. These vibrations are often most pronounced between 70 and 100 km/h and typically vanish as soon as you lift off the accelerator. If your Audi A4 Allroad starts to shake under engine load, it strongly suggests that the inner joint's bearing races are worn or the grease has degraded.
Other signs include clunking or knocking noises when altering speed or coming on and off the throttle. It is equally important to inspect the CV boots regularly. If a boot tears, the high-performance CV joint grease escapes while moisture and road grime penetrate the joint, causing accelerated component failure. For a Quattro owner, addressing these symptoms promptly is vital, as driveline imbalance can cause secondary damage to costlier components such as differentials or gearbox mounts.
How to choose the correct inner CV joint
Identifying the precise inner CV joint for an Audi A4 Allroad B9 40 TDI Quattro can be tricky, as Audi fitted different variations depending on the exact build date and equipment specifications. Relying solely on the engine code or model year is not always sufficient. You may need to verify technical details such as the spline count on the shaft and the diameter of the joint where it interfaces with the transmission. Some versions feature bolted drive flanges, while others use plug-in splined shafts.
To ensure an exact fit, simply select your car's make, model and engine on our website. We have carefully cross-referenced our products against original equipment manufacturer (OEM) part numbers to match your vehicle's exact technical specification. Ordering from us eliminates the risk of getting the wrong part and gives you total peace of mind that the component you receive matches factory standards, making installation straightforward.
Related components to inspect
We recommend checking these exact pages for the same vehicle when working on the inner CV joint:
Whenever a drivetrain component shows signs of wear, related parts on the same vehicle should be inspected as well. By cross-referencing these exact pages for the Audi A4 Allroad B9 40 TDI Quattro, you can more easily determine whether a fault lies in the inner CV joint itself or in an adjacent section of the drivetrain.
This is particularly relevant on four-wheel-drive models, where vibrations, play and mechanical noises can travel between several parts of the same driveline. A quick check of related categories reduces the risk of replacing one component while missing an adjacent worn part that contributes to the same issue.
- Audi A4 Allroad B9 40 TDI Quattro
- Drive shafts for Audi A4 Allroad B9 40 TDI Quattro
- Outer CV joints for Audi A4 Allroad B9 40 TDI Quattro
- Propeller shafts for Audi A4 Allroad B9 40 TDI Quattro
By proactively checking these parts, you reduce the risk of future breakdowns and ensure that your four-wheel-drive system operates at its best in all driving conditions.
Why buy from CVJoint24?
CVJoint24 is the international shop of a Swedish driveline specialist, dispatching directly from our central warehouse in Helsingborg, Sweden. Unlike general car parts retailers, we concentrate exclusively on driveline components, providing specialist expertise and an extensive product range that few can match. When you order an inner CV joint for your Audi from us, you receive a part rigorously selected for fit and durability. We understand how crucial your vehicle is to your daily life, which is why we offer fast order processing and reliable EU-wide delivery.
Our aim is to make finding the right part straightforward. By selecting your specific make, model and engine, you can order with absolute confidence. We pair competitive pricing with knowledgeable technical support from specialists who genuinely understand your car's drivetrain. Whether you are a professional garage or a dedicated DIY mechanic, we are your reliable partner for keeping your Audi A4 Allroad B9 40 TDI Quattro in peak condition.
Frequently asked questions about inner CV joints for Audi A4 Allroad B9 40 TDI Quattro
Why does my Audi A4 Allroad B9 40 TDI Quattro vibrate under acceleration?
Vibrations under load, particularly at higher speeds, are a classic sign of a worn inner CV joint. As the joint's internal components wear, play develops, creating an imbalance as the engine's torque is transferred to the wheels.
Can I replace just the inner CV joint, or must I replace the entire drive shaft?
On the Audi A4 Allroad B9 40 TDI Quattro, it is usually entirely possible to replace only the inner CV joint. This is a cost-effective solution provided the drive shaft itself is straight and in good condition.
How do I know I have the correct number of splines on my inner CV joint?
The most reliable method is to select your vehicle by make, model and engine variant in our catalogue. If you wish to be completely certain, you can also count the splines on your old joint, but our database is optimised to identify the exact match straight away.
Are the CV boot and grease included when I buy an inner CV joint from you?
Yes, our inner CV joints are supplied as complete kits. This means you receive the specific CV boot, the correct quantity of specialist grease, retaining clips, and any mounting bolts required for a professional replacement.
Is there a difference between the left and right inner CV joint on a Quattro?
This can vary depending on the gearbox type and model year. On some configurations they are identical, whilst on others they differ in length or mounting type. Always select your specific vehicle details to ensure you get the correct part for each side.
What happens if I continue driving with a worn inner CV joint?
Ignoring vibrations from a worn inner CV joint can cause consequential damage to the gearbox output bearings and differential. In the worst-case scenario, the joint can fail completely, leaving the vehicle immobilised and potentially damaging surrounding components.