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  2. sku: 14611810864192722
  3. AUDI 4H0-823-745-C

AUDI 4H0-823-745-C Front Left Hood Cowl Extension A8L

fits model: A8, S8, Quattro. make: Audi. year: 2011–2018.

4h0-823-745-c Audi 11-18 A8 A8l Quattro S8 Front Left Hood Side Cowl Extension Trim Black Oem

( Manufacturer Part Number: 4H0-823-745-C ), ( Part Type: Hood Cowl ), ( Country Of Origin: Germany ), ( Color: Black ), ( Item Length: Oem ), ( Vintage Part: No ), ( Placement On Vehicle: Front, Left ), ( Ipn: 11-18 ), ( Manufacturer Warranty: 3 Months ), ( Features: Easy Installation )

Review AUDI A8l Front Left Hood Side Cowl Extension Trim Black Oem fits QUATTRO A8 S8 2011–2018

The **Audi 4H0 823 745-C (11-18) Hood Cowl Extension** for the **A8 (B9) and A8 L (B9L) Quattro models** from the 2011 to 2018 model years is a precision-engineered component designed to seamlessly integrate with the iconic, aerodynamic front fascia of these luxury sedans. Crafted from high-quality **polypropylene with a textured, matte black finish**, this cowl extension not only enhances the vehicle s sleek, streamlined appearance but also plays a critical role in maintaining proper airflow and structural integrity. The part is meticulously molded to match Audi s signature design language, featuring subtle contours and precise alignment with the surrounding body panels, including the front bumper, hood, and headlight bezels. Its robust construction ensures durability against environmental elements, from UV exposure to minor impacts, while its ergonomic design allows for straightforward installation, even for those with moderate mechanical experience. Whether paired with a standard or sport-tuned suspension setup, this cowl extension preserves the A8 s aggressive yet refined front-end character, making it an essential upgrade for owners seeking both aesthetic cohesion and functional performance. Compatible exclusively with the **4.0L V8, 3.0L TDI, and 2.0L TFSI Quattro variants**, this part is a testament to Audi s commitment to precision engineering, ensuring a perfect fit for the front left side of the hood cowl where form meets function in one seamless solution.

### **Pros and Cons of buying a Audi 4H0-823-745-C (Hood Cowl Extension for A8/A8L Quattro S8, 2011 2018)**

#### **Pros:**

1. **Improved Aerodynamics and Performance**

The hood cowl extension is designed to enhance airflow over the front of the vehicle, reducing drag and improving stability at high speeds. This can lead to better handling, especially in performance-oriented models like the S8.

2. **Enhanced Cooling Efficiency**

A properly fitted cowl extension can improve airflow to the radiator and engine bay, helping maintain optimal engine temperatures under heavy loads or in high-performance driving conditions.

3. **Aesthetic Upgrade**

The part is designed to match Audi s styling cues, giving the vehicle a more aggressive and cohesive look, particularly if the car has been modified or restored.

4. **Compatibility with Aftermarket Mods**

If you plan to add other performance-related components (e.g., larger air intakes, upgraded intercoolers), this part can serve as a foundation for a more comprehensive front-end modification.

5. **OEM-Quality Fitment**

As an original Audi part, it ensures a precise fit without the risk of misalignment or improper sealing that can occur with aftermarket knockoffs.

6. **Potential Resale Value Boost**

For enthusiasts or collectors, a well-maintained A8/A8L with OEM modifications (including this part) may appeal to buyers looking for a restored or performance-oriented example.

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#### **Cons:**

1. **Cost**

The part itself is relatively expensive, especially when factoring in labor costs for installation. Prices can vary, but it typically ranges from **$300 $600 ** depending on the source (new vs. used/rebuilt). Installation by a professional Audi specialist may add another **$100 $300** in labor.

2. **Installation Complexity**

The hood cowl extension requires careful alignment with the hood, radiator support struts, and front bumper. Improper installation can lead to misalignment, water leaks, or even damage to the hood latch mechanism.

3. **Limited Performance Gains for Stock Engines**

If the S8 is running stock (e.g., 4.0L V8 with standard tuning), the aerodynamic benefits may be modest. Significant gains in downforce or cooling would require complementary modifications (e.g., a front splitter, larger air intakes, or a performance exhaust).

4. **Potential for Water Ingress**

If not sealed properly, gaps around the cowl extension could allow water to enter the engine bay, particularly during heavy rain or off-road use. This risk increases if the installation is rushed or poorly executed.

5. **Weight Addition**

The cowl extension adds slight weight to the front of the vehicle, which while negligible could have a minor impact on acceleration and braking dynamics in a high-performance setup.

6. **Compatibility with Aftermarket Parts**

Some aftermarket front-end modifications (e.g., aggressive air intakes or custom bumpers) may not align perfectly with the cowl extension, requiring additional adjustments or compromises in fitment.

7. **Depreciation Consideration**

While the part itself may last the life of the car, the A8/A8L platform (especially the S8) is known for depreciating rapidly. If the primary goal is long-term value, the cost of this modification may not be justified unless paired with other high-value upgrades.

---

### **Conclusion**

The **Audi 4H0-823-745-C hood cowl extension** is a worthwhile addition for owners of the **A8/A8L Quattro S8 (2011 2018)** who prioritize **aerodynamics, cooling efficiency, and aesthetic refinement**. It is particularly beneficial if you plan to pursue further performance modifications or if you appreciate the OEM fit and finish. However, the **cost and installation complexity** mean it is not a necessary upgrade for everyday driving.

For **stock or lightly modified S8s**, the benefits may be marginal, and the expense could be better allocated elsewhere (e.g., suspension upgrades, exhaust systems, or interior enhancements). On the other hand, if you are investing in a **high-performance build** or restoring the vehicle to showroom condition, this part is a **solid, high-quality choice** that aligns with Audi s design philosophy.

---

### **Recommendation**

- **Buy if:**

- You are committed to a **performance-oriented build** and want to optimize airflow and cooling.

- You value **OEM aesthetics** and are willing to invest in a **complete front-end refresh** (e.g., pairing it with a front splitter or upgraded air intakes).

- The car is **already modified or restored**, and this part complements your vision.

- You have access to a **qualified Audi specialist** for precise installation.

- **Skip if:**

- The S8 is **stock or used primarily for daily commuting**, as the gains may not justify the cost.

- You are on a **tight budget**, as the part and labor add up quickly.

- You plan to **modify the front end further** with aftermarket parts that may conflict with the cowl extension s fitment.

- The car s **resale value** is a major concern, as this is not a high-ROI upgrade for depreciating luxury models.

**Final Verdict:** This is a **premium, niche upgrade** best suited for **performance enthusiasts or restorers** rather than casual owners. If you decide to proceed, prioritize **professional installation** to avoid potential issues with sealing or alignment.

Details:

Shipping prices for ground apply only to the continental states of USA. All of the parts are tested either before or after removal from vehicle. This part may fit one or all of the described vehicles. Fitment and Compatibility.

Please match part number to ensure fitment. As a result of it being used part, the item may show light scuffs, scratches, or other imperfections. All electronic items are tested before being listed.

part #: 4h0823745 prices

  • $29.99-$55.00

specifications cartrimmouldings:

  • for models: A8, S8, Quattro
  • for makes: Audi
  • for years: 2011-2018
  • mpn: 4h0-823-745-c
  • part type: Hood Cowl
  • country of origin: Germany
  • color: Black
  • item length: Oem
  • vintage part: No
  • placement on vehicle: Front, Left
  • ipn: 11-18
  • manufacturer warranty: 3 Months
  • features: Easy Installation

seller cartrimmouldings:

  • city: Lincoln, California
  • rating: 99.8%
  • # reviews: 11035

general cartrimmouldings:

  • Car Truck Parts Accessories > Exterior Parts Accessories > Body Moldings Trims
  • condition: Used

returns cartrimmouldings:

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

shipping cartrimmouldings:

  • type: Fixed
  • transit: 3-7 Days
  • class: Expedited
  • carrier: USPS
  • service: USPS Priority Mail
  • cost: $15.00

payments cartrimmouldings:

  • credit card: Diners-club
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offer cartrimmouldings:

  • best offers: True
  • sold: 0
  • quantity: 1
  • availability: In Stock
  • started: April 7, 2026
  • options: Ship-to-home
for models: a8, s8, quattro, for makes: audi, for years: 2011-2018, part type: hood cowl, country of origin: germany, item length: oem, vintage part: no, placement on vehicle: front, left, manufacturer warranty: 3 months, features: easy installation,
category: auto parts > car truck parts accessories > exterior parts accessories > body moldings trims, color: black, sku: 14611810864192722,
Audi 4H0-823-745 Is Similar To:
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5 offers $29.99–$55.00 USD
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  • Used. Offer #4 priced at $31.50 + $15.00 shipping estimate = $46.50* total. All of the parts are tested either before or after removal from the vehicle As a result of itbeing a used part, the item may show light scuffs, scratches, or other imperfections.+$15.00 shipping
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