AUDI 8K0399115T Caeb Transmission Crossmember 2.0L

( Manufacturer Part Number: 8K0399115T ), ( Manufacturer Warranty: 1 Month ), ( Type: Automatic Transmission ), ( Country Of Origin: Germany )

Review AUDI 2.0l Caeb Transmission Support Crossmember Oem fits A5 A4 A6 2009–2015

The **Audi 8K0399115T (09-15) Transmission Crossmember for 2.0L CAEB Engines (A5, A4, A6)** is a precision-engineered, high-performance underbody component designed exclusively for Audi s 8N and 8L platform vehicles equipped with the **2.0L CAEB inline-four engine** and **09G/09H/09J transmission**. This crossmember serves as the structural backbone of the powertrain assembly, providing critical support to the transmission, engine mounts, and subframe while ensuring optimal alignment, rigidity, and durability under the demanding forces of daily driving, towing, or aggressive acceleration. Crafted from **high-strength steel** and subjected to rigorous Audi-approved manufacturing standards, this crossmember is engineered to withstand the torsional and lateral stresses of modern driving dynamics, including sharp cornering, sudden braking, and variable load conditions. Its **integrated mounting points** are precisely machined to accommodate the **CAEB engine s specific torque converter and transmission interfaces**, ensuring seamless integration with the **09G/09H/09J gearboxes** found in these models. The design incorporates **reinforced gussets and welded joints** to distribute weight and force evenly, reducing fatigue and extending the lifespan of both the crossmember and the surrounding powertrain components. Whether installed in an **Audi A5 Cabriolet, A4 Avant, or A6 Allroad**, this crossmember plays a vital role in maintaining drivetrain stability, reducing transmission vibration, and preventing premature wear on the engine mounts and subframe bushings. For enthusiasts seeking a **direct-fit, OEM-level replacement** or those addressing suspension or powertrain-related issues, this part is an essential upgrade, offering the same level of precision and reliability as Audi s original equipment without the compromise of aftermarket alternatives. Proper installation requires adherence to Audi s torque specifications and alignment procedures to ensure optimal performance and longevity.

### **Pros and Cons of Buying an Audi (Chassis 8K0, Model Years 2009 2015, A5/A4/A6, 2.0L CAEB Transmission, Crossmember 099115T)**

#### **Pros**

1. **Strong Engine and Performance**

The 2.0L CAEB (FSI) engine is a well-regarded unit in Audi s lineup, known for its smooth operation, good power output (around 200 220 hp depending on the model), and efficient fuel consumption compared to larger V6 or V8 engines. It is also less prone to common issues like oil consumption or timing chain failures that plague some other Audi engines.

2. **Reliability of the 02N Transmission (CAEB)**

The 02N automatic transmission paired with the 2.0L FSI engine is generally reliable if properly maintained. It handles well under normal driving conditions, and with regular fluid changes (every 60,000 80,000 miles), it can last well beyond 150,000 miles. Unlike some older Audi transmissions (e.g., the 09G in early A4s), the 02N is less prone to catastrophic failure if serviced correctly.

3. **Quattro All-Wheel Drive System**

If the vehicle has Quattro, it provides excellent traction, handling, and stability especially useful in wet or snowy conditions. This system is robust and rarely fails if maintained.

4. **Modern Technology and Comfort**

These models (2009 2015) feature advanced infotainment systems (e.g., MMI navigation, optional touchscreens), adaptive cruise control, lane departure warning, and other safety features. The interior is well-built, with high-quality materials in higher trims (e.g., S line, Premium Plus).

5. **Resale Value**

Audi s premium positioning means these models hold their value relatively well compared to mass-market brands. The 2.0T FSI engines are particularly sought after in the used market, especially in A5/A6 models.

6. **Potential for Modifications**

The 2.0T FSI engine is a popular platform for tuning, with aftermarket support for turbo upgrades, exhaust modifications, and suspension tuning. This can extend the vehicle s lifespan and enjoyment for enthusiasts.

7. **Crossmember (099115T) Compatibility**

The crossmember you mentioned is a common part for these models, meaning it is widely available and relatively affordable if replacement is needed. Audi s aftermarket parts ecosystem ensures easy access to replacements.

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#### **Cons**

1. **Maintenance Costs**

Audi is a luxury brand, and parts, labor, and maintenance can be expensive. Regular services (e.g., spark plugs, oxygen sensors, timing belt) should be done on schedule to avoid costly repairs. Neglecting maintenance can lead to engine or transmission issues.

2. **Electrical Gremlins**

- MMI (Multimedia Interface) glitches or complete failure.

- Sensor malfunctions (e.g., wheel speed sensors, camshaft sensors).

- Headlight or taillight failures due to poor wiring or connectors.

These issues can be frustrating and costly to diagnose and repair.

3. **Timing Chain and Valvetronic Issues (Less Common but Possible)**

While the 2.0T FSI engine is generally reliable, some units may develop timing chain stretch or Valvetronic actuator failures over time. These issues are more common in higher-mileage examples and require professional attention.

4. **Transmission Fluid Degradation**

The 02N transmission relies on high-quality fluid, and neglecting fluid changes can lead to rough shifting, delayed engagement, or even failure. Some owners report that the transmission becomes sluggish after 100,000 miles if fluid hasn t been changed regularly.

5. **Rust and Corrosion (Especially in Older Models)**

Audi s body panels, particularly in the wheel arches, rocker panels, and undercarriage, are prone to rust if the vehicle was exposed to salt or poor storage conditions. A thorough inspection of these areas is essential before purchase.

6. **Infotainment System Limitations**

The MMI system in these models can be clunky and outdated by modern standards. Software updates are rare, and compatibility with modern smartphones or navigation updates may be limited. Some owners prefer to replace the system entirely.

7. **Potential for Hidden Damage**

Audi s high resale value makes them targets for salvage yards or "rolled" vehicles. Always verify the vehicle s history (e.g., accident damage, flood exposure) through a pre-purchase inspection (PPI) and report like Carfax or Autocheck.

8. **Fuel Economy Variability**

While the 2.0T FSI is efficient, real-world fuel economy can vary based on driving habits, maintenance, and modifications. Some owners report slightly lower MPG than expected due to aggressive driving or worn components.

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#### **Conclusion**

The **2009 2015 Audi A5/A4/A6 with a 2.0L CAEB engine and 02N transmission** is a solid choice if you prioritize reliability, performance, and luxury. The engine is robust, the transmission is manageable with proper care, and the Quattro system enhances driving dynamics. However, **electrical issues, maintenance costs, and potential rust problems** are real concerns that must be addressed.

- Buyers who prioritize **driving enjoyment** and are willing to invest in maintenance.

- Those who appreciate **Audi s premium feel** and are okay with occasional electrical quirks.

- Owners who plan to **keep the car for 100,000 miles** with diligent upkeep.

If you find a well-maintained example with a **clean service history, no accident damage, and a recent pre-purchase inspection**, it can be an excellent long-term purchase. However, if you re on a tight budget or dislike dealing with potential electrical or mechanical issues, consider alternatives like a **BMW 3 Series, Mercedes C-Class, or a well-tuned Toyota Camry** for similar reliability at a lower cost.

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#### **Recommendation**

1. **Get a Pre-Purchase Inspection (PPI):** Hire a trusted mechanic to thoroughly inspect the engine, transmission, electrical system, and undercarriage for rust or damage.

2. **Verify Maintenance Records:** Ensure the vehicle has had **regular oil changes, transmission fluid changes, timing belt inspections, and spark plug replacements** on schedule.

- Test the **transmission for smooth shifting** (listen for grinding or hesitation).

- Inspect **electrical components** (headlights, sensors, MMI responsiveness).

- Look for **rust in wheel wells, rockers, and undercarriage**.

4. **Negotiate Based on Findings:** If the PPI reveals any issues, use them to negotiate a lower price or request repairs before purchase.

5. **Budget for Future Costs:** Set aside funds for **potential electrical repairs, transmission fluid changes, and minor wear items** (e.g., brake pads, tires).

**Final Verdict:** If you re prepared for the maintenance and potential quirks, this Audi is a **great mid-sized luxury sedan** with a strong engine and capable transmission. For a more hassle-free experience, consider a similarly priced but more reliable alternative.

Details:

EXTERIOR COLOR: QUARTZ GRAY METALLIC CODE: Q4PA. Shipping costs are only covered on a case-by-case basis. TRANSMISSION SUPPORT CROSSMEMBER PART# 8K0399115T, WILL FIT 2009 2013 AUDI A4 / QUATTRO 2.0L CAEB 2010 2014 A5 2012 2015 A6. 2010 AUDI A5 CONVERTIBLE FWD.

ENGINE: 2.0L TFSI CODE: CAEB.

part #: 8k0399115t prices

• $42.60-$104.99

specifications autotransmissionsgo:

• for models: A5, A4, A6
• for makes: Audi
• for years: 2009-2015
• mpn: 8k0399115t
• manufacturer warranty: 1 Month
• type: Automatic Transmission
• country of origin: Germany

general autotransmissionsgo:

• condition: Used
• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

payments autotransmissionsgo:

• wallet: Google-pay
• credit card: Discover
• other

seller autotransmissionsgo:

• city: Dallas, Texas
• # reviews: 1810
• rating: 99.9%

offer autotransmissionsgo:

• options: Ship-to-home
• started: May 15, 2026
• availability: In Stock
• quantity: 1
• sold: 0
• best offers: True

returns autotransmissionsgo:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

shipping autotransmissionsgo:

• service: Standard
• class: Standard
• transit: 5-9 Days
• cost: $50.00
• type: Fixed

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