Audi A4 2.5 TDI Quattro
Spare parts and drivetrain components for Audi A4 2.5 TDI Quattro. Check fitment by make, model and engine before ordering.
Products for Audi A4 2.5 TDI Quattro
- Position: Front right, Inner
- Inner splines: 28
- Seal diameter: 50 mm
- Total length: 300 mm
- Joint diameter: 102 mm
- Position: Inner
- Inner splines: 22
- Seal diameter: 31 mm
- Total length: 157 mm
- Joint diameter: 75 mm
- Position: Rear
- Total length: 1,604 mm
- Number of joints: 3
- Position: Front left
- Splines wheel side: 38
- Total length: 590 mm
- Joint diameter: 98 mm
- ABS teeth: 45
- Position: Rear
- Splines wheel side: 38
- Total length: 618 mm
- Joint diameter: 88 mm
- ABS teeth: 45
- Position: Rear
- Splines wheel side: 33
- Total length: 590 mm
- Diameter 1: 89 mm
- ABS teeth: 45
- Position: Front left
- Splines wheel side: 38
- Total length: 593 mm
- Joint diameter: 88 mm
- ABS teeth: 45
- Position: Front right
- Splines wheel side: 38
- Total length: 613 mm
- Joint diameter, gearbox side: 100 mm
- ABS teeth: 45
- Position: Rear
- Splines wheel side: 33
- Total length: 593 mm
- Joint diameter: 88 mm
- ABS teeth: 45
- Position: Front left
- Splines wheel side: 38
- Total length: 596 mm
- Joint diameter: 98 mm
- ABS teeth: 45
- Position: Front right
- Splines wheel side: 38
- Total length: 618 mm
- Joint diameter: 98 mm
- ABS teeth: 45
- Position: Front, Inner
- Inner splines: 28
- Seal diameter: 108 mm
- Total length: 32 mm
- Joint diameter: 108 mm
- Position: Front, Inner
- Inner splines: 34
- Seal diameter: 100 mm
- Joint diameter: 85 mm
Audi A4 2.5 TDI Quattro drivetrain parts
The Audi A4 2.5 TDI Quattro is renowned for its robust construction and sophisticated four-wheel-drive system. The drivetrain in this specific model is engineered to handle the substantial torque produced by the 2.5-litre V6 diesel engine, placing significant demands on every single component. Power is distributed from the gearbox via a central propeller shaft to both the front and rear axles, delivering the exceptional stability and traction for which the Quattro system is celebrated. Here you will find a comprehensive range of spare parts vital for maintaining this performance. Our extensive catalogue covers virtually all requirements for servicing or repairing your vehicle's power transmission. We focus on supplying parts that meet or exceed original equipment specifications, ensuring long-lasting durability and dependable operation in all driving conditions.
How the Audi A4 2.5 TDI Quattro drivetrain works
The drivetrain layout of the Audi A4 2.5 TDI Quattro is complex and technically advanced. Its engine is mounted longitudinally, typical of larger Audi platforms, sending power into a gearbox integrated with a Torsen centre differential. This mechanical differential instantly directs torque between the front and rear axles according to available grip, without any electronic delay. Drive shafts fitted with inner and outer CV joints transmit power to the front wheels, accommodating suspension travel and steering angles under continuous load. Towards the rear, power is transferred through a propeller shaft to the rear differential, which subsequently drives the rear wheels via an additional pair of driveshafts. Every element in this setup, from the smallest bearings to the sturdiest shafts, must work in perfect harmony to eliminate vibration and power loss. It is this precision engineering that delivers the distinctive Quattro driving experience.
Common faults and symptoms
Several unmistakable symptoms indicate that drivetrain components on your Audi A4 2.5 TDI Quattro are beginning to wear. A clicking or knocking sound on full steering lock is a classic sign that an outer CV joint is failing, frequently triggered by a split CV boot allowing grease to escape and dirt to enter. If you notice vibrations through the car body under acceleration, a worn inner CV joint is often the culprit. Quattro owners should also be alert to vibrations felt through the floor or seat, which can stem from an unbalanced prop shaft or a deteriorating centre bearing. Furthermore, erratic ABS intervention or illuminated warning lamps on the dashboard can be caused by a cracked ABS ring misreading wheel speeds. Leaving these issues unaddressed risks consequential damage to costlier assemblies such as the differentials or gearbox.
Common parts to replace on the Audi A4 2.5 TDI Quattro
When repairs are due, certain parts are consistently in demand for this model. We stock a comprehensive selection of complete drive shafts and individual joints to give you full flexibility during maintenance. Here are the most frequently requested categories for your vehicle:
- Drive shafts for Audi A4 2.5 TDI Quattro – Multiple variants available covering front and rear axles as well as various gearbox options.
- Outer CV joints for Audi A4 2.5 TDI Quattro – 5 premium options to eliminate clicking noises when turning.
- Inner CV joints for Audi A4 2.5 TDI Quattro – 4 choices designed to cure driveline vibration under load.
- Propeller shafts for Audi A4 2.5 TDI Quattro – A crucial component of the four-wheel-drive system, kept in stock for fast dispatch.
- ABS rings for Audi A4 2.5 TDI Quattro – 2 precision rings to restore correct anti-lock braking operation.
Selecting the appropriate category lets you quickly pinpoint the components tailored to your car's exact specification, ensuring dependable power delivery once again.
Find the right part for your Audi A4 2.5 TDI Quattro
Navigate directly to the relevant product section for your Audi A4 2.5 TDI Quattro:
With multiple potential drivetrain faults on an all-wheel-drive car, starting in the right section saves valuable time. By comparing the exact part categories for the Audi A4 2.5 TDI Quattro, you can easily distinguish between drive shaft, CV joint or propeller shaft issues and proceed to the page that matches your symptoms and fitment.
- Drive shafts for Audi A4 2.5 TDI Quattro
- Outer CV joints for Audi A4 2.5 TDI Quattro
- Inner CV joints for Audi A4 2.5 TDI Quattro
- Propeller shafts for Audi A4 2.5 TDI Quattro
- ABS rings for Audi A4 2.5 TDI Quattro
Pinpointing the correct spare part for an Audi A4 2.5 TDI Quattro can be tricky, as dimensions vary depending on model year, transmission type, and whether the component fits the front or rear. The most dependable method to guarantee an exact fit is filtering by your car's make, model and engine variant in our store. It is also wise to check physical measurements and spline counts specified in the product descriptions, particularly when replacing constant velocity joints where minor variations between original equipment manufacturers exist. Our system is designed to minimise order errors, saving you both time and workshop costs. If you are uncertain which component is failing, we always suggest carrying out a thorough visual inspection of boots, shafts and bearings before ordering.
Why shop with CVJoint24
As the international shop of a Swedish driveline specialist, we offer dedicated technical expertise that general car-part suppliers rarely match. We understand every subtlety of the Quattro system and curate a comprehensive inventory so you never have to compromise on quality. When ordering from cvjoint24.com, you benefit from our fitment guarantee, ensuring peace of mind that your chosen parts will fit when selected using your vehicle's make, model and engine details. With durable components, high-grade joint grease, and resilient CV boots designed to withstand tough European winters, we are your long-term partner for transmission spares. Premium parts, supplied with specialist care and knowledge, are our commitment to every Audi owner, helping your Quattro drivetrain deliver the performance you expect mile after mile.
Frequently Asked Questions about Drivetrain Parts for Audi A4 2.5 TDI Quattro
How do I know if my Audi A4 2.5 TDI Quattro needs a new drive shaft?
The most common signs are heavy vibrations under acceleration or unusual noises from the wheel arches. If you notice a cracked CV boot with grease leaking out, there is a strong risk that the entire drive shaft or CV joint needs replacing.
Does the same CV joint fit both the front and rear of my Quattro?
No, the CV joints usually differ between the front and rear axles on the Audi A4 2.5 TDI Quattro. It is therefore vital to select your exact model and engine specifications and check the fitting position (front/rear) in the product description.
Why does my car vibrate under acceleration but not at a steady speed?
This is a classic symptom of a worn inner CV joint. The inner constant velocity joint accommodates axial movement, and when it wears out, it causes an imbalance that is felt most prominently under load.
What is the advantage of buying a complete drive shaft rather than just a CV joint?
Replacing a complete drive shaft saves considerable installation time and guarantees that both the inner and outer joints, as well as the CV boots, are brand new. It is often the more cost-effective solution in the long run.
How does a damaged ABS ring affect the safety of my car?
A cracked or corroded ABS ring sends incorrect signals to the vehicle ECU, which can cause the ABS system to pulse under normal braking or trigger warning lights and deactivate the electronic stability programme (ESP).
Can I replace the propeller shaft myself on my Audi A4?
It is technically feasible for an experienced DIY mechanic, but it requires lifting the vehicle securely and ensuring the prop shaft is aligned correctly to prevent subsequent vibrations. Particular care is advised when fitting the centre bearing.