AUDI 8V4-807-378-D Bumper Inserts Covers

( Manufacturer Part Number: 8V4-807-378-D ), ( Part Type: Cover Bumper ), ( Genuine Oem: Yes ), ( Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Year: 2017 2018 ), ( Parts Included: Only Part Reference 14 On The Diagram Is Included )

Review AUDI Genuine Side Support fits 2017–2018

The **Audi 8V4-807-378-D** is a high-performance, precision-engineered **intake manifold** designed exclusively for Audi s 1.8L turbocharged four-cylinder engines, specifically those found in models like the **A4 B5 (8E), A6 C4 (4E), and S4 B5 (8E)**, as well as certain iterations of the **TT 8N** and **TT RS**. This component is a critical part of the engine s induction system, playing a pivotal role in optimizing airflow, turbocharging efficiency, and overall performance. Crafted from **high-grade aluminum alloy**, the manifold is engineered to minimize weight while maximizing structural integrity, ensuring durability under the demanding conditions of high-RPM driving, aggressive throttle inputs, and sustained turbocharged operation. Its **dual-plane design** with precisely tuned runners promotes a smoother, more linear power delivery by optimizing the scavenging and charging of the turbocharger, reducing turbo lag and enhancing throttle response particularly noticeable in the mid-to-high RPM range. The manifold features **integrated throttle body mounting points**, allowing for a direct and secure fitment with stock or aftermarket throttle bodies, while its **reinforced mounting flanges** ensure a leak-free seal with the engine block and intake tract. For performance enthusiasts, this manifold is often paired with upgraded turbochargers, larger intercoolers, or high-flow air filters to further amplify the engine s breathing capacity, resulting in noticeable gains in horsepower and torque. Whether installed as part of a full intake upgrade or as a standalone performance enhancement, the **8V4-807-378-D** delivers a measurable improvement in engine efficiency, responsiveness, and reliability, making it a sought-after component for both street-driven and track-focused Audi applications. Its compatibility with a wide range of tuning setups from mild ECU remaps to full bolt-ons ensures versatility for drivers seeking to extract every ounce of potential from their 1.8T engine.

### **Pros and Cons of Buying an Audi A6 (C7, 4.0L V8, 8V4-807-378-D) Engine**

#### **Pros**

1. **Strong Performance** The 4.0L V8 engine (W8) is a refined, high-revving powerplant capable of producing around **400 420 horsepower** (depending on the model year and tuning). It delivers a smooth, linear powerband and is well-suited for both daily driving and spirited performance.

2. **Luxury and Comfort** Audi s C7 generation (2011 2018) is known for its premium interior, high-quality materials, and advanced driver aids (adaptive cruise control, lane-keeping assist, etc.). The ride is comfortable, with good isolation from road noise.

3. **Reliability (for a V8)** Compared to other high-performance V8 engines, the 4.0L W8 is relatively robust. With proper maintenance (timely oil changes, valve adjustment, and cooling system checks), it can last well over **200,000 miles**. However, it is not as bulletproof as a turbocharged or smaller-displacement engine.

4. **Resale Value** Audi s luxury brand retains decent resale value, especially for well-maintained examples. The A6 remains a desirable car in the used market, particularly for those who appreciate V8 power and Audi s driving dynamics.

5. **Quattro All-Wheel Drive** Standard on most models, Quattro provides excellent traction in various conditions, making it a practical choice for those who need confidence in all weather.

6. **Tuning Potential** The 4.0L V8 responds well to aftermarket modifications, including cold air intakes, exhaust upgrades, and ECU tuning. Some owners achieve **450 horsepower** with relatively simple modifications.

7. **Classic Audi Driving Feel** The C7 A6 retains Audi s signature **quattro dynamics**, with precise steering, engaging suspension tuning, and a sporty ride mode (if equipped).

---

#### **Cons**

1. **High Fuel Consumption** The naturally aspirated V8 guzzles fuel, averaging **12 15 MPG in the city and 18 22 MPG on the highway**. This can be expensive, especially with rising gas prices.

- **Valve adjustment** (every 60,000 90,000 miles, depending on model).

- **Timing chain** (lifetime in most cases, but inspection is recommended).

- **Cooling system** (Audi V8s are prone to overheating if the cooling system is neglected).

- **Transmission** (some early models had minor transmission issues, but later ones improved).

3. **Weight and Efficiency** The V8 adds significant weight, making the car less nimble than a turbocharged or smaller-engine Audi. It also lacks the fuel efficiency of modern turbocharged alternatives.

4. **Depreciation** Luxury cars, especially high-performance ones, depreciate quickly. A used A6 with this engine may not hold value as well as a more fuel-efficient or modern Audi model.

5. **Noise and Vibration** The V8 can be louder than a turbocharged engine, especially at higher RPMs. Some owners report slight vibrations at certain speeds, though this is usually minor.

6. **Parts Availability and Scarcity** As older Audi models phase out, finding genuine parts (especially for the C7) can become difficult. Aftermarket parts may be necessary in some cases.

7. **Environmental Concerns** A naturally aspirated V8 is not eco-friendly, which may be a consideration if you prioritize emissions or electric/hybrid alternatives.

---

### **Conclusion**

The **Audi A6 (C7) with the 4.0L V8 (8V4-807-378-D) engine** is a **fantastic choice for those who prioritize performance, luxury, and driving enjoyment** over fuel efficiency and low maintenance costs. It offers a **smooth, powerful, and engaging** driving experience with Audi s signature Quattro all-wheel drive, making it ideal for enthusiasts who appreciate a classic V8 sound and feel.

- Need **high fuel economy** (consider a turbocharged or hybrid Audi instead).

- Want **minimal maintenance costs** (a smaller-displacement or turbocharged engine may be more practical).

- Are concerned about **long-term depreciation** (modern turbocharged Audis retain value better).

- Prefer **quieter, more efficient** driving (a diesel or electric Audi could be a better fit).

If you **find a well-maintained example** (under **100,000 miles**, with a service history), it remains a **fantastic used purchase** especially if you enjoy the **thrill of a naturally aspirated V8** and don t mind the higher running costs.

### **Recommendation**

You love **V8 power and Audi s driving dynamics**.

You can afford **higher fuel and maintenance costs**.

You want a **luxurious, comfortable, and engaging** daily driver or weekend car.

You plan to **keep it for at least 100,000 miles** with proper maintenance.

You need **maximum fuel efficiency**.

You want a **low-maintenance, high-reliability** vehicle.

You re sensitive to **high running costs** (fuel, insurance, repairs).

You prefer **modern turbocharged or hybrid technology**.

**Final Verdict:** **A great choice for V8 enthusiasts**, but not the most practical for budget-conscious or efficiency-focused buyers. If you find a **clean, well-documented example**, it will likely be a **joy to own** for years to come.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Genuine Audi Parts. Product Genuine Audi Side Support 8V4-807-378-D. Special Order Items are not returnable under any circumstance.

Losses or damages that occur after final delivery confirmation are not covered. Electrical parts are not returnable. Parts must be resalable and in the original packaging.

part #: 8v4807378 prices

• $42.66-$44.94

specifications vintagecarbumperus:

• for makes: Audi
• for years: 2017-2018
• mpn: 8v4-807-378-d
• part type: Cover Bumper
• genuine oem: Yes
• warranty: 1 Year
• fitment type: Direct Replacement
• year: 2017 2018
• parts included: Only Part Reference 14 On The Diagram Is Included

offer vintagecarbumperus:

• availability: In Stock
• quantity: 4
• started: May 12, 2026
• sold: 0
• options: Ship-to-home

seller vintagecarbumperus:

• city: Henderson, Nevada
• rating: 99.8%
• # reviews: 7333

shipping vintagecarbumperus:

• transit: 4-10 Days
• cost: $8.99
• type: Fixed
• service: Standard
• class: Standard

returns vintagecarbumperus:

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

payments vintagecarbumperus:

• credit card: Diners-club
• other
• wallet: Paypal

general vintagecarbumperus:

• Exterior Parts Accessories > Bumpers Components > Bumper Inserts Covers
• condition: New

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