Inner CV joints for Audi A4 B9 40 TDI Quattro
Looking for a premium inner CV joint for your Audi A4 B9 40 TDI Quattro? At CVJoint24, the international shop of a Swedish driveline specialist, you will find the right components to...
Products for Inner CV joints for Audi A4 B9 40 TDI Quattro
- Position: Front, Inner
- Total length: 88 mm
- Splines gearbox side: 34
- ABS teeth: 34
Inner CV joints for Audi A4 B9 40 TDI Quattro
When it comes to power transmission in a modern premium car such as the Audi A4 B9 40 TDI Quattro, precision and durability are paramount. The inner CV joint plays a crucial role in transferring torque from the gearbox or differential out to the drive shafts. For a vehicle equipped with Quattro all-wheel drive, these components are exposed to constant loads across varying driving conditions. Choosing a replacement part that matches or exceeds original standards is therefore essential to maintain the vehicle's driving dynamics and safety.
At CVJoint24, we specialise in these critical drivetrain components. We know that an Inner CV joints for Audi A4 B9 must be manufactured to exact tolerances to work seamlessly with the car's advanced chassis. By focusing on quality and correct fitment, we ensure your car remains reliable for many kilometres to come.
What does the inner CV joint do on an Audi A4 B9 40 TDI Quattro?
The inner CV joint, frequently a tripod joint or constant velocity joint, is mounted closest to the gearbox or rear differential. Its primary purpose is to allow the drive shaft to plunge in and out as the suspension travels up and down. Unlike the outer CV joint, which mainly accommodates steering angles, the inner joint focuses on absorbing changes in length across the drivetrain without sacrificing transmission efficiency.
For an Audi A4 B9 40 TDI Quattro, this is especially vital because the all-wheel drive distributes power across both front and rear axles. If the inner joint fails to operate smoothly, it can cause imbalances throughout the system, negatively impacting both fuel consumption and ride comfort. A properly functioning constant velocity joint minimises friction and heat build-up, extending the working life of the entire drive shaft.
Common signs of wear
Wear in an inner CV joint typically presents differently than in an outer joint. The most classic symptom is vibration felt through the car's body or seats during acceleration. These vibrations tend to disappear when you lift off the accelerator or coast. Because the inner joint is situated close to the vehicle's centre, any imbalance readily propagates through the chassis and is easily mistaken for unbalanced wheels or failing wheel bearings.
Another telltale sign is a dull thumping noise under load or when driving over road imperfections. If the CV boot protecting the joint has split, grease can escape while dirt and moisture penetrate. This rapidly damages the internal rollers and tracks. If you spot grease splatters on the vehicle's underside near the gearbox, it is high time to inspect your inner CV joint before total failure occurs.
How to choose the correct inner CV joint
Finding the right component for an Audi A4 B9 40 TDI Quattro requires care. Variations often exist depending on the specific engine variant, gearbox (such as S tronic), and whether the part is intended for the front or rear axle. The first step is always to filter by your car's make, model and engine to display the parts that are technically compatible with your vehicle's exact specification.
When choosing an inner CV joint, check that all necessary installation parts are included, such as the CV boot, clamps and specialist grease. At CVJoint24, we provide complete kits to make replacement straightforward. By verifying technical dimensions against your existing component, you can be confident that fitting will go smoothly. Remember that choosing the correctly specified part is the foundation of our fitment guarantee.
Related parts to inspect
Please also check these exact pages for the same vehicle when working on the inner CV joint:
When one drivetrain component shows signs of wear, nearby parts on the same car often require attention as well. By comparing these exact pages for the Audi A4 B9 40 TDI Quattro, it becomes much easier to determine whether an issue lies with the inner CV joint or another adjacent section of the power transmission.
This is particularly relevant on models where vibrations, play and noises can mirror symptoms across several sections of the same drivetrain. A quick check of related categories reduces the risk of replacing one correct component while missing a neighbouring part that affects the very same fault.
- Audi A4 B9 40 TDI Quattro
- Drive shafts for Audi A4 B9 40 TDI Quattro
- Outer CV joints for Audi A4 B9 40 TDI Quattro
Why shop at CVJoint24?
CVJoint24 is the international shop of a Swedish driveline specialist with its central warehouse in Helsingborg, Sweden. We combine in-depth technical knowledge with a range that covers everything from everyday family cars to high-performance Quattro models. Our goal is for you to get the correct part on the first attempt, backed by our comprehensive database and expert support. We ship promptly across the European Union so your vehicle spends minimal time off the road.
When you purchase from us, you receive not just a spare part, but the confidence of our fitment guarantee. We understand that every detail counts in power transmission, and we never compromise on quality. Whether you are a DIY mechanic or a professional garage, we are your trusted partner for a dependable drivetrain. Experience the difference of dealing with a genuine specialist.
Frequently asked questions about inner CV joints for Audi A4 B9 40 TDI Quattro
What are the most common symptoms of a failing inner CV joint on an Audi A4 B9?
The most common signs are vibrations through the car body under acceleration and load. The vibrations usually stop as soon as you lift off the accelerator. Clunking or knocking noises over bumps may also occur.
Does the same inner CV joint fit both front and rear on a Quattro?
No, the specifications typically differ between the front and rear axles on an Audi A4 B9 40 TDI Quattro. Always select your vehicle's exact make, model and engine variant to identify the precise fitting position required.
Are the CV boot and grease included when I buy an inner CV joint from you?
Yes, our CV joint kits are normally supplied complete with a CV boot, high-quality grease, clamps and any circlips needed for installation.
Can I replace just the CV boot if the joint is still working?
Yes, if you catch a split boot early before dirt has entered or the grease has completely escaped, replacing just the CV boot is often enough to save the joint.
Why does the car only vibrate under acceleration if the inner joint is worn?
This is because the inner joint is subjected to the greatest torque during acceleration. If there is play or wear inside the joint's tracks, it creates an imbalance that is felt as vibration whenever power is transferred.
How do I make sure I get the right part for my Audi A4 B9 40 TDI Quattro?
By selecting your car's make, model and engine variant on our site, our catalogue is filtered so that you only see the spare parts verified to fit your specific vehicle.