ACURA 520007 Emission Valve Sensor

( Manufacturer Part Number: 520007 ), ( Part Type: Valve Sensor )

Review ACURA Emission Valve Sensor Oem fits MDX 2014–2020

The **Acura 520007 Emission Valve Sensor (EVS) for the 2014 2020 MDX** is a precision-engineered component designed to regulate and monitor the flow of exhaust gases within the vehicle s emissions control system, ensuring optimal performance and compliance with stringent environmental regulations. This critical sensor, often referred to as the **Exhaust Gas Recirculation (EGR) valve sensor** or **EGR flow sensor**, plays a pivotal role in reducing harmful emissions by controlling the recirculation of a portion of the engine s exhaust back into the intake manifold. By doing so, it helps lower combustion temperatures, decreases nitrogen oxide (NOx) emissions, and enhances fuel efficiency a key factor in modern automotive engineering.

Manufactured to Acura s exact specifications, the **520007 EVS** is built with high-quality materials, including durable stainless steel and precision-machined components, to withstand the harsh conditions of the exhaust system, including extreme temperatures, corrosive gases, and mechanical stress. The sensor features a robust **solenoid-actuated mechanism**, allowing for precise control of the EGR valve s opening and closing, which is essential for maintaining the correct air-fuel ratio and engine performance. Its design incorporates a **sealed housing** and **O-ring gaskets** to prevent leaks, ensuring a tight and reliable fit when installed on the 2014 through 2020 MDX models, which utilize the **V6 3.5L J35A engine**.

This sensor is a direct replacement for the original equipment manufacturer (OEM) part, offering seamless compatibility with the vehicle s **OBD-II diagnostic system** and **fuel injection management**. It is engineered to work harmoniously with the **MDX s advanced emissions control software**, which relies on real-time feedback from the EVS to adjust engine parameters dynamically. Whether addressing symptoms like **check engine lights (CEL) due to P0400, P0401, or P0402 codes**, rough idling, reduced power, or excessive smoke from the exhaust, replacing the faulty sensor with this high-performance unit restores the vehicle s emissions efficiency and drivability. The **520007 EVS** is a trusted solution for both professional mechanics and DIY enthusiasts seeking a reliable, long-lasting component that adheres to Acura s exacting standards.

**Pros and Cons of Buying a 2014 2020 Acura MDX with a Faulty Emission Valve Sensor (OBD Code P0440 or P0446)**

### **Pros**

1. **Reliable Platform** The Acura MDX (based on the Honda Pilot) is known for its solid build quality, comfortable ride, and spacious interior. The 2014 2020 models generally hold their value well, especially the V6 variants.

2. **Good Resale Value** Acura maintains strong resale prices compared to many luxury brands, meaning you can recoup a significant portion of your investment if you sell later.

3. **Available V6 Engine Option** The 3.5L V6 (in later models) provides strong performance (280 300 hp) and decent fuel efficiency ( 18 20 MPG combined). Earlier models (2014 2016) had a 3.5L V6 with similar power but slightly lower efficiency.

4. **Comfort and Practicality** The MDX offers a smooth ride, ample cargo space (up to 36.6 cu. ft.), and a comfortable cabin with good sound insulation. The 2017 models introduced a more refined interior with better materials.

5. **AWD Capability** The MDX comes standard with AWD, making it a good choice for snowy or rough road conditions.

6. **Potential for Cost-Effective Repairs** If the emission valve sensor is the only known issue, fixing it (typically $150 $300 for parts and labor) may be a minor expense compared to other major failures.

7. **Aftermarket Support** Acura has a strong aftermarket presence, meaning parts and mechanics are widely available.

---

### **Cons**

1. **Emission Valve Sensor Issue** The most critical problem is the **evaporative emission control (EVAP) system sensor failure**, which triggers a check engine light (OBD codes P0440 or P0446). While this is often a simple fix (replacing the sensor or canister purge valve), persistent EVAP system failures can lead to:

- Reduced fuel efficiency (if the system malfunctions intermittently).

- Potential long-term damage if the issue isn t addressed (e.g., fuel system contamination).

- Decreased resale value if the problem isn t disclosed or repaired.

2. **Transmission Concerns (2014 2016 Models)** Earlier MDX models (especially with the 6-speed automatic) have reported **transmission hesitation, rough shifting, or failure** in some cases. The 2017 models switched to a more reliable 9-speed automatic, reducing this risk.

3. **Infotainment Glitches (2014 2016)** Older models had a clunky, slow **Bose audio system** and a basic touchscreen interface. Later models (2017 ) improved with a more responsive infotainment system and better connectivity.

4. **Rust Concerns (Snow-Belt Regions)** If the vehicle was driven in areas with heavy snow/salt, check for **underbody rust** (especially in the wheel wells and frame rails). This can lead to costly repairs if neglected.

5. **Maintenance Costs** While not unique to the MDX, Acura parts and labor can be expensive. Regular maintenance (timing belt, spark plugs, oil changes) should be kept up to avoid bigger bills.

6. **Recalls and Unaddressed Issues** Always check the **NHTSA recall database** for any unaddressed recalls on the specific vehicle. Some MDX models had **brake booster or seatbelt pretensioner recalls** that may require attention.

7. **Depreciation** Like most luxury SUVs, the MDX loses value quickly. If you plan to keep it long-term, budget for potential future repairs (e.g., suspension, exhaust, or electrical issues).

---

### **Conclusion**

- The **EVAP system issue is confirmed and budgeted for** (a relatively cheap fix).

- The **transmission is in good condition** (especially for 2014 2016 models).

- The **vehicle has been well-maintained** (service records are available).

- You **inspect for rust, electrical gremlins, or other hidden problems** before purchase.

- The **seller refuses to disclose or fix the EVAP issue**.

- The **transmission or suspension shows signs of wear**.

- The **vehicle has a history of neglect** (e.g., no oil changes, ignored recalls).

- You **cannot afford potential future repairs** (e.g., timing belt replacement, exhaust leaks).

---

### **Recommendation**

- The **EVAP system is the only issue** (no hidden transmission or electrical problems).

- **No major rust or frame damage**.

- **Transmission fluid is clean** (especially for 2014 2016 models).

2. **Negotiate the Price** If the emission sensor is confirmed as the only issue, use it as leverage to **lower the asking price by 5 10%** to account for the repair.

- A **more reliable 9-speed transmission**.

- **Improved infotainment and comfort**.

- **Better fuel efficiency** (if equipped with the V6).

4. **Budget for the Repair** If buying used, set aside **$200 $400** for replacing the **EVAP sensor or canister purge valve**.

- **2017 Honda Pilot** (similar platform, often cheaper).

- **Lexus RX** (if reliability is a top priority).

- **Used luxury SUVs with fewer known issues** (e.g., 2018 Toyota Highlander, 2019 Subaru Ascent).

- **Worth it?** **Yes, if** the EVAP issue is the only concern, the vehicle is well-maintained, and you can afford minor repairs.

- **Not worth it?** If the seller won t address the issue, the transmission is questionable, or the car has a history of neglect.

Would you like help finding specific maintenance records or inspection checklists?

Details:

Express shipping could be arranged, just let us know. Otherwise a $150 fee may apply.

part #: 520007 prices

• $31.49-$88.56

specifications emissyste:

• for models: Mdx
• for makes: Acura
• for years: 2014-2020
• mpn: 520007
• part type: Valve Sensor

general emissyste:

• condition: Used
• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts

seller emissyste:

• rating: 99.5%
• # reviews: 6096
• city: Fords, New Jersey

payments emissyste:

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

returns emissyste:

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

offer emissyste:

• best offers: True
• options: Ship-to-home
• sold: 0
• started: February 19, 2026
• quantity: 1
• availability: In Stock

shipping emissyste:

• carrier: USPS, FedEx, UPS
• transit: 4-7 Days
• cost: $0.00
• class: Standard, Expedited, One-day
• type: Calculated
• service: USPS Ground Advantage, FedEx 2Day, UPS Next Day Air

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