Inner CV joints for Audi A4 B9 40 TDI
Need a replacement Inner CV joints for Audi A4 B9 on your 40 TDI? As an international Swedish driveline specialist, we offer high-precision components with a guaranteed fit. To ensure...
Products for Inner CV joints for Audi A4 B9 40 TDI
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
Inner CV joints for Audi A4 B9 40 TDI
Maintaining the drivetrain on a modern premium car such as the Audi A4 B9 40 TDI is vital for both driving comfort and long-term safety. The inner CV joint plays a pivotal role in the vehicle's power transmission, particularly on models fitted with the torquey 40 TDI engine, which places heavy demands on component strength. Here you will find parts specifically selected to meet the exact technical specifications and tolerances required by Audi for the B9 platform. We focus on supplying components that match original specifications, giving you complete peace of mind that your car retains its original handling characteristics and exceptional reliability.
Our range for the Audi A4 B9 is carefully chosen to withstand the stresses imposed by challenging European road conditions and harsh winter climates. By choosing a specialist such as CVJoint24, you ensure you receive a product engineered with the correct grade of steel and durable boot materials, which is crucial for preventing future breakdowns. We understand that every detail matters when it comes to power delivery, which is why we leave nothing to chance when sourcing our parts.
What does an inner CV joint do on the Audi A4 B9 40 TDI?
The inner CV joint is mounted closest to the gearbox, and its primary task is to transfer torque from the transmission to the drive shaft and ultimately out to the driven wheels. Unlike the outer constant velocity joint, which mainly accommodates steering angles, the inner joint's chief function is to absorb the axial plunge and movement created as the car's suspension moves up and down during driving. On an Audi A4 B9 40 TDI, where power is delivered efficiently through an advanced gearbox, this component is subject to considerable strain, particularly during hard acceleration from low revs.
The design is frequently a tripod joint, which allows smooth longitudinal plunge while maintaining a constant rotational speed. A properly functioning inner joint ensures that power transmission remains entirely vibration-free, protecting both the gearbox output shafts and the car's suspension from unnecessary wear. If the joint begins to bind or develops excessive play, the entire driving experience suffers, and the risk of consequential damage to costlier drivetrain components increases significantly.
Common signs of wear
Wear in an inner CV joint typically presents differently from problems with an outer joint. The most characteristic symptom is vibration through the car body or steering wheel under acceleration, most noticeable at speeds between 50 and 100 km/h. If these vibrations vanish the moment you lift off the accelerator and let the car coast, this is a strong sign that the inner joint is worn or has lost its lubrication. Under load, the joint is forced to work against wear grooves that have developed in its internal tracks.
Another symptom is a dull clunking or knocking noise when load changes abruptly, such as when changing gear or quickly releasing the throttle. It is also vital to inspect the CV boot regularly. If the boot has split, the specialised grease escapes while road grit and moisture enter. This drastically accelerates wear and can cause total failure in a very short time. Addressing these signs early is cost-effective, as it prevents secondary damage to the transmission bearings.
Choosing the right inner CV joint
Selecting the correct spare part for an Audi A4 B9 40 TDI requires precision, as variations exist depending on whether the car is front-wheel drive or Quattro, as well as the specific gearbox fitted. The most reliable way to find the correct part is to select your car's make, model and engine variant in our vehicle selector. We have mapped our catalogue against accurate vehicle data so you can order the right component straight away. Before ordering, it is always wise to check technical details such as the spline count and joint diameter where possible, as Audi occasionally makes running revisions during a model year.
When you purchase an inner CV joint from us, it arrives as a complete kit. This includes the vehicle-specific joint, a tailored CV boot, high-temperature grease and the necessary retaining clips and bolts. Using the correct specification of grease is crucial for the inner joint's lifespan, as it operates at different temperatures and conditions compared to an outer joint. With our expertise and fitment guarantee, you can be confident that the part you receive will fit your vehicle perfectly.
Related parts to check
Be sure to check these exact pages for the same vehicle when working on the inner CV joint:
When one drivetrain component shows signs of wear, neighbouring parts on the same car often require attention as well. By cross-referencing these exact pages for the Audi A4 B9 40 TDI, it becomes much easier to determine whether an issue lies specifically within the inner CV joint or in an adjoining part of the power delivery system.
This is especially true on models where vibrations, play and noises can transmit symptoms between multiple drivetrain components. A quick check of related categories reduces the risk of replacing one part while overlooking another nearby component that contributes to the very same fault.
By inspecting these components at the same time, you ensure that the entire driveline operates smoothly and your Audi maintains its refined driving dynamics.
Why shop at CVJoint24?
CVJoint24 is your dedicated specialist for all things driveline and power transmission. We combine an extensive, focused product catalogue with in-depth technical expertise to provide you with the best possible purchasing experience. When you buy from us, you receive high-calibre car parts backed by our fitment guarantee and access to specialist driveline knowledge. We understand that your time is valuable, which is why we continually streamline our logistics to dispatch your orders promptly across the European Union.
Our priority is engineering quality and precision fit. We know that an Audi A4 B9 40 TDI deserves parts that can handle the load, which is why we only source from manufacturers that meet our stringent quality standards. By focusing exclusively on our niche, we supply premium components at competitive prices. Whether you are a professional garage or an experienced DIY mechanic, we are your trusted partner for reliable driveline components. Welcome to CVJoint24 – your true CV joint specialists.
Frequently asked questions about inner CV joints for Audi A4 B9 40 TDI
How do I know whether the inner or outer CV joint is faulty on my Audi A4 B9?
A faulty inner CV joint typically causes vibrations throughout the entire car during acceleration, whereas a worn outer CV joint produces a clicking noise when turning sharply at low speeds.
Why does my Audi A4 B9 40 TDI vibrate under acceleration?
This is a classic symptom of a worn inner CV joint. When the joint is loaded under acceleration, excessive play or wear in the joint's tracks causes noticeable vibrations.
Are the CV boot and grease included when I purchase an inner CV joint from you?
Yes, all our CV joint kits come complete with a tailored CV boot, the correct amount of dedicated grease, clamps and any necessary mounting bolts.
Can I replace just the inner CV joint, or do I need to replace the entire drive shaft?
On the Audi A4 B9 40 TDI, you can easily replace just the inner CV joint, which is a cost-effective alternative to replacing the complete drive shaft.
How quickly can I get my new CV joint delivered?
We offer fast dispatch on in-stock items from our Swedish central warehouse, ensuring quick delivery to your door across the EU.
Does the fitment guarantee apply when I select my vehicle?
Yes, we provide a guaranteed fitment when you select your specific make, model and engine variant, ensuring complete peace of mind that you receive the correct part for your Audi.