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  3. HYUNDAI 39400-2C300JSN

HYUNDAI 39400-2C300JSN Bypass Blow Valve Solenoid Bypass/blow

fits model: Elantra, Veloster. make: Hyundai.

39400-2c300jsn Hyundai Oem Bypass/blow Off Valve Electronic Solenoid For Elantra N Veloster

( Manufacturer Part Number: 39400-2C300JSN ), ( Part Type: Valve Solenoid )

Review HYUNDAI Oem Bypass/blow Off Valve Electronic Solenoid fits ELANTRA VELOSTER

The **Hyundai 39400-2C300JSN Bypass/Blow Valve Solenoid** is a precision-engineered component designed specifically for the **Hyundai Elantra (2011 2014) and Veloster (2012 2016)**, serving as a critical part of the **exhaust gas recirculation (EGR) system**. This solenoid valve regulates the flow of exhaust gases back into the engine s intake manifold, helping to reduce nitrogen oxide emissions while improving fuel efficiency and engine performance. Crafted from high-quality materials, including durable metal and corrosion-resistant coatings, this solenoid is built to withstand the demanding conditions of modern automotive exhaust systems, ensuring reliable operation even under high-temperature and high-pressure environments. The **2C300JSN** designation indicates a direct-fit replacement, eliminating the need for modifications or additional adapters, making installation straightforward for both professional mechanics and DIY enthusiasts. When the engine operates under specific conditions such as light loads or moderate speeds the solenoid activates, allowing a controlled amount of exhaust gas to bypass the turbocharger (in turbocharged models) or flow directly into the intake, promoting cleaner combustion. Over time, carbon buildup, electrical failures, or mechanical wear can cause this solenoid to malfunction, leading to symptoms like **rough idling, reduced power, increased emissions, or even a check engine light with codes such as P0400, P0401, or P0402**. Replacing it with this **OEM-quality Hyundai part** restores proper EGR function, ensuring optimal engine performance and compliance with emissions standards. Whether you're addressing a persistent engine issue or performing routine maintenance, this solenoid is a **direct, no-compromise replacement** that delivers the same level of reliability as the original equipment, helping to extend the lifespan of your vehicle s exhaust system.

Buying the Hyundai 39400-2C300JSN bypass/blow valve solenoid for your Elantra or Veloster has its advantages and disadvantages, depending on your priorities cost, quality, availability, and installation ease. Below is a detailed breakdown:

### **Pros of buying a Hyundai 39400-2C300JSN Part**

1. **OEM Quality and Reliability**

The Hyundai 39400-2C300JSN is an original equipment manufacturer (OEM) part, meaning it meets Hyundai s strict manufacturing standards. This typically results in better durability, performance, and compatibility with your vehicle s systems compared to aftermarket alternatives. OEM parts are designed to function seamlessly with the engine s sensors and controls, reducing the risk of malfunctions or error codes.

2. **Guaranteed Fitment**

Since this is a direct replacement part from Hyundai, there s no risk of sizing issues or misalignment. The solenoid is engineered to fit perfectly in the bypass/blow valve assembly of your Elantra or Veloster, ensuring proper function in the engine s emissions system. This eliminates the need for modifications or additional adjustments during installation.

3. **Warranty Coverage**

Hyundai OEM parts often come with a warranty, either from the manufacturer or the retailer. This provides peace of mind in case the part fails prematurely due to defects. Aftermarket parts may not offer the same level of warranty protection, leaving you responsible for any issues.

4. **Support for Emissions Compliance**

The bypass/blow valve solenoid is critical for maintaining proper emissions control in your vehicle. Using an OEM part ensures that your car continues to pass emissions tests and avoids potential fines or registration issues. Aftermarket parts might not meet the same emissions standards, risking compliance problems.

5. **Easier Troubleshooting**

If you encounter issues after installation, an OEM part is easier to diagnose and replace. Dealerships and mechanics are more familiar with OEM components, which can simplify repairs and reduce downtime.

6. **Long-Term Cost Efficiency**

While the upfront cost of an OEM part is higher than aftermarket options, its longevity and reliability can save you money in the long run. Replacing an aftermarket part that fails sooner may end up costing more over time.

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### **Cons of buying a Hyundai 39400-2C300JSN Part**

1. **Higher Upfront Cost**

OEM parts are generally more expensive than aftermarket alternatives. The Hyundai 39400-2C300JSN will cost significantly more than a generic or third-party solenoid, which can be a deterrent for budget-conscious buyers. Prices for OEM parts can range from $80 to $150 or more, depending on the retailer and location.

2. **Limited Availability and Lead Times**

OEM parts may not be as widely stocked as aftermarket options, especially in smaller or online-only retailers. You might need to order the part, which could result in longer wait times for delivery. This can be inconvenient if you re working on a tight schedule or need the part urgently.

3. **Potential for Overkill**

If your vehicle s bypass/blow valve solenoid is failing due to wear and tear rather than a manufacturing defect, an OEM replacement might be more expensive than necessary. In such cases, an aftermarket part that offers comparable performance at a lower cost could be a more practical choice.

4. **Dealer or Authorized Retailer Pricing**

To purchase an OEM part, you may need to go through a Hyundai dealership or an authorized online retailer. Dealerships often mark up prices, and you might not receive the same discounts as you would with aftermarket parts from a general auto parts store.

5. **Installation Complexity**

While the solenoid itself is relatively straightforward to replace, the process might require some mechanical skill, especially if you re unfamiliar with emissions system components. If you re not comfortable working on your vehicle, you ll need to pay a mechanic for installation, adding to the overall cost.

6. **Environmental and Ethical Considerations**

Some buyers prefer aftermarket parts for environmental reasons, as OEM parts often come in packaging that contributes to waste. Additionally, purchasing from a dealership might not align with ethical consumer choices for those who support independent or sustainable businesses.

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### **Conclusion and Recommendation**

The Hyundai 39400-2C300JSN bypass/blow valve solenoid is an excellent choice if your priority is **reliability, emissions compliance, and long-term performance**. Its OEM status ensures compatibility, durability, and support for your vehicle s emissions system, making it ideal if you want to avoid potential issues with aftermarket parts or if your car is still under warranty (though this part is typically not covered under the powertrain warranty).

However, if **cost is a major concern** and you re confident in the quality of aftermarket alternatives, you might consider a reputable brand like **Denso, Bosch, or ACDelco**, which offer comparable performance at a lower price. Always ensure that the aftermarket part is specifically designed for your Elantra or Veloster s year and engine configuration to avoid fitment issues.

**Final Recommendation:** - **Buy the Hyundai 39400-2C300JSN if:**

- You want the highest quality and assurance of fitment.

- Your vehicle is still under warranty or you value long-term reliability.

- You re willing to pay the premium for an OEM part.

- Emissions compliance is a priority (e.g., for inspections or resale value).

- **Consider an aftermarket alternative if:**

- You re on a tight budget and can find a high-quality aftermarket part with good reviews.

- You re comfortable researching and selecting a part with verified compatibility.

- You re replacing the solenoid due to normal wear rather than a defect.

For most DIYers or those who prioritize peace of mind, the Hyundai OEM part is the safer and more practical choice. If you re unsure, consult with a mechanic or Hyundai dealership to confirm whether the part is necessary or if a simpler fix (e.g., cleaning or adjusting the existing solenoid) is possible.

Details:

OEM Hyundai replacement solenoid for the Elantra N, Koan N and Veloster - ALL Years This is Bypass valve or Blow off.

part #: 394002c300jsn price

  • $57.20

specifications accperformanc:

  • for models: Elantra, Veloster
  • for makes: Hyundai
  • mpn: 39400-2c300jsn
  • part type: Valve Solenoid

general accperformanc:

  • Parts Accessories > Permance Racing Parts > Accessories
  • condition: New

returns accperformanc:

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

seller accperformanc:

  • city: Milford, Connecticut
  • # reviews: 2965
  • rating: 100.0%

offer accperformanc:

  • quantity: 1
  • availability: In Stock
  • started: June 8, 2026
  • options: Ship-to-home
  • sold: 0

shipping accperformanc:

  • service: USPS Priority Mail Large Flat Rate Box
  • cost: $27.76
  • type: Calculated
  • class: Expedited
  • transit: 3-9 Days
  • carrier: USPS

payments accperformanc:

  • wallet: Paypal
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  • credit card: Visa
for models: elantra, veloster, for makes: hyundai, part type: valve solenoid,
category: auto parts > racing parts > accessories, sku: 17107901374773722,
Hyundai 39400-2C300JSN Is Similar To:
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1 offer $57.20 USD
  • New. Offer #1 priced at $57.20 + $27.76 shipping estimate = $84.96* total. OEM Hyundai replacement solenoid for the Hyundai Elantra N, Kona N and Veloster N - ALL Years This solenoid is for the Bypass valve or Blow off valve.+$27.76 shipping

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