1. Automatic Transmissions Products
  2. sku: 22967283994785762
  3. AUDI 9L300038R

AUDI 9L300038R Hhu Automatic Transmission 71K

fits model: B6, B7, S4, Tl. make: Audi. year: 2005–2006.

9l300038r Audi 2005 2006 B6 B7 S4 Hhu 6 Speed Automatic Transmission 71k Miles Tl

( Manufacturer Part Number: 9L300038R ), ( Model: AUDI-S4 ), ( Type: Automatic Transmission ), ( Id: 7df36b5b-d5d1-40cd-becc-60edeb907f75 ), ( Interchange: 400-62013 ), ( Partout Id: A-114676304 )

Review AUDI Hhu Speed Automatic Transmission 71k Miles fits B6 B7 S4 TL 2005–2006

The **Audi 9L300038R** is a precision-engineered automatic transmission module designed exclusively for the **Audi S4 (B6 and B7 generations, 2005 2006)** with the **3.0L V6 biturbo (HQU or HHU engine)** and **TL (Twin-Link) transmission system**. This high-performance transmission is a critical component in Audi s advanced powertrain architecture, delivering seamless gear shifts, optimized torque delivery, and robust durability for both spirited driving and daily commuting. Built to Audi s exacting standards, the **9L300038R** integrates a **6-speed automatic transmission** with a **torque converter clutch (TCC)** and **valve body control**, ensuring smooth acceleration, precise shift points, and efficient fuel economy even under heavy loads. The transmission s **aluminum housing** and **precision-machined gears** are engineered to withstand the high torque output of the **3.0L V6 biturbo**, which produces between **300 333 hp** depending on the model year, while maintaining reliability over extended mileage. The **TL system** (a proprietary Audi transmission logic) further enhances performance by adapting shift patterns to driving conditions, reducing lag, and optimizing engine braking for better control during spirited driving. This transmission is compatible with both **manual and automatic shift modes**, offering drivers the flexibility to engage in sportier driving dynamics when desired. Whether installed in a **S4 3.0T Quattro** or a **S4 WRC rally variant**, the **9L300038R** ensures a harmonious balance between power delivery and drivetrain efficiency, making it a sought-after replacement for those seeking to restore or upgrade their Audi s transmission system. Its compatibility with **Audi s electronic control modules (ECU)** and **adaptive shift programming** ensures that it integrates seamlessly with the vehicle s broader powertrain network, providing a near-identical performance to the original factory unit. For enthusiasts and mechanics alike, this transmission represents a blend of **German engineering precision, high-performance capability, and long-term reliability**, making it an essential component for maintaining the integrity of Audi s legendary S4 lineup.

### **Pros and Cons of Buying a 2005 2006 Audi S4 (B6/B7) with 9L3 3.0L Engine, HHU Automatic Transmission**

#### **Pros**

1. **Strong Engine and Performance**

The 9L3 3.0L V6 engine (B6/B7) is a well-regarded unit, producing around **300 320 hp** (depending on tuning and modifications). It is known for its reliability when maintained properly, offering a good balance of power and efficiency for its class. The **HHU (Hydraulic High-Performance Unit)** automatic transmission is a robust, durable option, especially when compared to older Audi transmissions like the 01N or 09G.

2. **High-Quality Build and Brand Prestige**

Audi s B6/B7 platform (1999 2005) and its successor (B7, 2005 2008) are known for their premium build quality, refined interiors, and strong resale value relative to competitors like BMW and Mercedes. The S4 s sporty handling and aggressive styling make it a desirable car for enthusiasts.

3. **Reliability with Proper Maintenance**

If the car has been well-maintained, the **9L3 engine** can last **200,000 miles** with regular oil changes, timing belt replacements (every **60,000 100,000 miles**), and other scheduled services. The **HHU transmission** is also robust, though it requires proper fluid changes (every **60,000 miles**) to avoid premature wear.

4. **Aftermarket Support and Tuning Potential**

The S4 benefits from a strong aftermarket community, with options for **ECU tuning (e.g., APEXi, Haltech), exhaust upgrades, suspension modifications, and performance parts**. This makes it easier to enhance power and handling compared to more restrictive factory-tuned models.

5. **Comfortable and Refined Ride**

The S4 s suspension setup (adjustable in some models) and quiet cabin make it a comfortable daily driver, even if it s not as nimble as a manual transmission car. The **HHU automatic** provides smooth shifts when properly serviced.

6. **Good Fuel Economy for a Sport Sedan**

While not a hybrid or diesel, the 9L3 V6 offers **better fuel efficiency ( 18 22 MPG combined)** than many modern turbocharged engines, making it a practical choice for daily use.

7. **Classic S4 Appeal**

The **B6/B7 S4** is a cult favorite among Audi enthusiasts, and well-preserved examples hold value. Its **1999 2005 (B6) and 2005 2008 (B7) generations** are sought after for their raw performance and retro styling.

---

#### **Cons**

1. **High Maintenance Costs**

Audi parts and labor are **expensive**, especially for specialized components like **turbochargers, suspension parts, and electrical systems**. The **9L3 engine** is more complex than a naturally aspirated V6, requiring **high-quality oil (5W-40 or synthetic) and proper cooling system maintenance**.

2. **Transmission Reliability Concerns**

While the **HHU is durable**, it is **not as bulletproof as a manual transmission**. Common issues include:

- **Slipping or rough shifts** if fluid is neglected.

- **Solenoid failures** (can be costly to replace).

- **Torque converter wear** over time, which may require replacement ( $2,000 $3,000).

Proper **fluid changes and servicing** are **critical** to avoid major transmission problems.

3. **Electrical Gremlins**

Audis of this era are notorious for **electrical issues**, such as:

- **Faulty sensors (e.g., MAF, crankshaft position sensor)**.

- **Infotainment glitches** (especially in older models).

- **Power window or door lock failures**.

These can be frustrating and expensive to diagnose.

4. **Suspension Wear Over Time**

The **B6/B7 S4** uses **coilover shocks and sway bars**, which wear out over **80,000 120,000 miles**. Replacing them ( $1,000 $2,000) is necessary for proper handling.

5. **Rust and Corrosion Risks**

If the car was driven in **snowy, salty, or humid climates**, **rust in the wheel wells, subframe, and rocker panels** can be a concern. A thorough inspection is **essential** before purchase.

6. **Depreciation and Parts Availability**

While the S4 holds value better than many Audis, **parts for older models can be expensive**, especially if the car is no longer in production. **Used parts markets** may have limited stock for rare components.

7. **Manual Transmission Preference**

If you prefer **manual control**, the **HHU automatic** may feel less engaging than a **6-speed manual (01N)**, which is more responsive and fun to drive.

8. **Potential Engine Issues**

The **9L3 V6** can develop **oil leaks (valve cover gasket, oil pan gasket)** if not maintained. **Carbon buildup** in the intake can reduce performance over time, requiring **intake cleaning or replacement**.

9. **Resale Value Not as Strong as Modern Audis**

While the S4 is desirable among enthusiasts, **modern turbocharged Audis (e.g., S5, RS6) hold higher long-term value**, making this a **short-term investment** rather than a long-term hold.

10. **Quirks in Daily Driving**

- **Clutch-like engagement** in the HHU (some drivers dislike the slight delay).

- **Less precise shifting** compared to a manual or a modern dual-clutch transmission.

- **Heated seats and other luxury features** may require **additional maintenance**.

---

### **Conclusion**

The **2005 2006 Audi S4 (B6/B7) with the 9L3 3.0L engine and HHU automatic transmission** is a **great choice for enthusiasts** who prioritize **performance, driving dynamics, and Audi prestige** over ultra-modern efficiency. It offers **strong power, a refined ride, and strong aftermarket support**, making it ideal for **weekend drivers, track enthusiasts, or those who enjoy tuning**.

However, **buyers must be prepared for higher maintenance costs, potential electrical issues, and transmission reliability concerns**. The **HHU is durable but not foolproof**, and **proper servicing is non-negotiable**. If you **drive it regularly, keep up with maintenance, and enjoy the driving experience**, this S4 can be a **fantastic and fun car** for years.

For **daily drivers who want lower maintenance**, a **modern turbocharged Audi (e.g., S5, RS6)** or a **well-maintained BMW M3** might be better. But for **Audi purists and performance seekers**, the **B6/B7 S4 remains a fantastic choice**.

---

### **Recommendation**

**Buy if:**

You **prioritize driving enjoyment and performance** over ultra-low maintenance.

You **plan to maintain it properly** (oil changes, transmission fluid, suspension checks).

You **enjoy tuning and modifying** the car for better power and handling.

You **find a well-documented example** with **service records** and **no major rust or electrical issues**.

You **don t mind higher running costs** in exchange for **Audi s sporty charm**.

**Avoid if:**

You **expect a plug-and-play, low-maintenance luxury car**.

You **can t afford unexpected repairs** (transmission, electrical, suspension).

You **prefer a manual transmission** for better engagement.

The car has **visible rust, poor service history, or transmission slippage**.

**Final Verdict:**

The **2005 2006 S4 with HHU automatic is a fantastic car for the right buyer** one who appreciates **Audi s blend of performance, style, and driving dynamics** and is willing to **invest in its upkeep**. With **proper care, it can easily last 200,000 miles** and remain a **joy to drive**. However, **buyers should proceed with caution**, ensuring the car has been **well-maintained and thoroughly inspected** before purchase.

Details:

Vehicle Stock #: RL10. Buyer pays return shipping. Part Stock #. Model: AUDI S4.

Condition: 71k.

part #: 9l300038r prices

  • $500.00-$1007.99

specifications autotransmissionsgo:

  • for models: B6, B7, S4, Tl
  • for makes: Audi
  • for years: 2005-2006
  • mpn: 9l300038r
  • model: Audi-s4
  • type: Automatic Transmission
  • id: 7df36b5b-d5d1-40cd-becc-60edeb907f75
  • interchange: 400-62013
  • partout id: A-114676304

general autotransmissionsgo:

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

payments autotransmissionsgo:

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shipping autotransmissionsgo:

  • class: Standard
  • service: Standard
  • transit: 4-7 Days
  • type: Fixed
  • cost: $0.00

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

offer autotransmissionsgo:

  • started: February 26, 2026
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock

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  • # reviews: 1304
  • city: Durham, North Carolina
  • rating: 100.0%
for models: b6, b7, s4, tl, for makes: audi, for years: 2005-2006, type: automatic transmission, id: 7df36b5b-d5d1-40cd-becc-60edeb907f75, interchange: 400-62013, partout id: a-114676304,
category: auto parts > car truck parts accessories > transmission drivetrain > automatic transmission, sku: 22967283994785762,
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2 offers $500.00–$1007.99 USD
  • Used. Offer #1 priced at $500.00 + $250.00 shipping estimate = $750.00* total. Search for more parts forAUDI S4. Vehicle Info: 71K R&D SILVER LY7W BLKSLV PANDA ZR BHF HHU GDF SEDAN.+$250.00 shipping
  • Used. Offer #2 priced at $1007.99 + $0.00 shipping estimate = $1007.99* total. Request a Part WHAT TO EXPECT WITH YOUR TRANSMISSION?.FREE SHIPPING

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