1. Fuel Injectors Offers
  2. sku: 16165352597773663
  3. HERKO AUTOMOTIVE INJ771

HERKO AUTOMOTIVE INJ771 Fuel Injector 4L8Z-9F593 3.0L 4.6L

fits model: Escape, Explorer. make: Ford, Mercury. year: 2004–2009.

Inj771 Herko Automotive Fuel Injector For Ford Mercury Escape Explorer 3.0l 4.6l 2004-2009

( Brand: Herko Automotive ), ( Manufacturer Part Number: INJ771 ), ( Type: Fuel Injector ), ( Ipn: 4l8z-9f593-aa Fj461 If14 Itf13 Inj771 If13 ), ( Packaging: Herko Automotive Box ), ( Fitment: Direct Fit Application, Check Fitment Chart ), ( Manufacturer Warranty: Yes ), ( Warranty Info: 1 Year Replacement Warranty ), ( Items Included: 1x Inj771 Herko Automotive Fuel Injector )

Review HERKO AUTOMOTIVE Fuel Injector Ford Mercury 3.0l 4.6l fits ESCAPE EXPLORER 2004–2009

The **Herko INJ771 Fuel Injector** is a high-performance, precision-engineered replacement part designed specifically for Ford s iconic **Mercury Escape and Explorer** models equipped with the **3.0L Duratec V6** and **4.6L Modular V8** engines, spanning the production years from **2004 to 2009**. Crafted with meticulous attention to detail, this fuel injector is built to restore optimal fuel delivery, ensuring reliable performance, improved throttle response, and enhanced fuel efficiency critical components for maintaining the robust yet refined driving experience these vehicles are known for. Engineered to meet or exceed OEM specifications, the Herko INJ771 features a **durable stainless steel body** and a **high-flow solenoid valve**, which guarantees consistent atomization and precise fuel metering, even under demanding driving conditions. Whether you're tackling daily commutes, highway cruising, or occasional spirited drives, this injector delivers a seamless blend of durability and performance, reducing the risk of clogging, leaks, or electrical failures that can plague lower-quality aftermarket alternatives. Its **universal compatibility** with the specified engine configurations makes it an ideal choice for restorers, mechanics, and enthusiasts seeking a dependable upgrade without the hassle of sourcing hard-to-find OEM parts. With a focus on **long-term reliability**, the Herko INJ771 is backed by rigorous quality control standards, ensuring that every unit meets strict performance benchmarks before leaving the factory. Installing this injector not only revitalizes your vehicle s fuel system but also contributes to cleaner emissions and a more consistent idle, making it a smart investment for both performance-minded drivers and those prioritizing longevity in their Ford Mercury models.

**Pros and Cons of buying a HERKO INJ771 Fuel Injector for Ford Mercury Escape and Explorer (3.0L/4.6L, 2004 2009)**

### **Pros**

1. **Direct OEM Replacement** The HERKO INJ771 is designed as a direct drop-in replacement for the original Ford fuel injectors in these vehicles, ensuring a proper fit without modifications. This eliminates the need for adapter plates or custom mounting solutions, which can complicate installation.

2. **High-Quality Materials** HERKO is a well-regarded brand in the aftermarket automotive industry, known for producing reliable fuel injectors with durable construction. The INJ771 is built to withstand the demands of modern fuel systems, reducing the risk of premature failure.

3. **Improved Performance and Fuel Efficiency** If the original injectors were failing or clogged, replacing them with a new HERKO unit can restore proper fuel delivery, leading to better engine performance, smoother acceleration, and improved fuel economy. A clean, functioning injector ensures optimal air-fuel mixture, which is critical for engine health.

4. **Compatibility with Upgrades** If you plan to modify your vehicle (e.g., adding a turbocharger, performance tuning, or a larger fuel pump), the HERKO INJ771 can serve as a solid foundation for supporting increased fuel flow. It is often used in performance applications where stock injectors may be insufficient.

5. **Warranty and Support** HERKO offers warranties on their products, providing some peace of mind against defects. Additionally, they have a reputation for customer service, which can be helpful if installation or performance issues arise.

6. **Cost-Effective Solution** Compared to OEM injectors (which can be expensive, especially if ordering directly from Ford), the HERKO INJ771 offers a more affordable alternative without sacrificing quality. It is also often cheaper than aftermarket brands that may not be as well-established.

7. **Easy Installation** Since it is a direct replacement, installation typically requires only basic tools and can be done in a garage with some mechanical experience. No major disassembly of the fuel system is usually needed, making it a straightforward DIY project for many owners.

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### **Cons**

1. **Potential for Inconsistent Quality** While HERKO is a reputable brand, there have been occasional reports of quality control issues in some batches. This means there is a slight risk of receiving a defective unit, especially if purchasing from a third-party seller rather than an authorized distributor. Always buy from a trusted retailer to mitigate this risk.

2. **May Require Cleaning or Maintenance** Even new injectors can benefit from cleaning if the fuel system has been neglected. Over time, carbon deposits or fuel additives can clog the injectors, requiring periodic cleaning (either via fuel additives or professional servicing). This is not unique to HERKO but is a general consideration for all injectors.

3. **Limited Longevity in Severe Conditions** If the vehicle is used in extreme conditions (e.g., frequent towing, high-performance driving, or exposure to contaminated fuel), the HERKO INJ771 may wear out faster than expected. In such cases, upgrading to higher-quality injectors (e.g., Delphi, Siemens, or performance brands) may be warranted.

4. **Compatibility with Non-Stock Fuel Systems** While the INJ771 is a direct replacement for stock applications, modifying the fuel system (e.g., adding a larger fuel pump or upgrading to a turbocharger) may require additional components to match the increased fuel demand. The injector itself may not be sufficient without supporting upgrades.

5. **Potential for Over-Spray or Under-Spray** In rare cases, injectors may develop issues such as over-spraying (fuel leaking past the nozzle) or under-spraying (incomplete fuel atomization). This can lead to rough idling, misfires, or poor acceleration. If this occurs, the injector may need to be replaced or serviced.

6. **Dependence on Fuel Quality** Poor-quality fuel can accelerate wear on injectors, reducing their lifespan. If you frequently use low-grade fuel or fuel with additives that are harsh on injectors, the HERKO unit may degrade faster than expected.

7. **Installation Challenges for DIYers** While the INJ771 is designed for easy installation, some users may encounter difficulties if they lack experience with fuel system work. Improper handling of fuel lines, electrical connections, or injector mounting can lead to leaks or performance issues. In such cases, professional installation may be advisable.

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### **Conclusion**

The HERKO INJ771 fuel injector is a solid choice for replacing failing or clogged injectors in 2004 2009 Ford Mercury Escape and Explorer models with 3.0L or 4.6L engines. It offers a balance of affordability, reliability, and ease of installation, making it a practical option for both everyday drivers and those considering light performance upgrades. However, it is not without potential drawbacks, particularly regarding quality control risks and the need for proper maintenance to ensure long-term performance.

For most owners, the HERKO INJ771 will provide a noticeable improvement in engine performance and fuel efficiency, especially if the original injectors were degraded. If you are planning to push the vehicle beyond stock specifications (e.g., forced induction, aggressive tuning), you may want to research higher-end injectors to ensure they can handle the increased demands.

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### **Recommendation**

- **Buy from an Authorized Distributor**: To minimize the risk of receiving a defective unit, purchase the HERKO INJ771 from a reputable aftermarket parts dealer or directly from HERKO s official channels. Avoid third-party sellers with no return policies.

- **Clean the Fuel System**: Before installing new injectors, consider cleaning the fuel tank, fuel lines, and fuel rail to remove deposits that could clog the new injectors. Use a high-quality fuel system cleaner or have the system professionally cleaned.

- **Monitor Performance**: After installation, observe the vehicle s performance for at least a week to ensure the injectors are functioning correctly. Listen for unusual noises, check for fuel leaks, and monitor fuel efficiency and acceleration.

- **Maintain Regularly**: Use high-quality fuel and consider periodic injector cleaning or maintenance to extend the lifespan of the HERKO injectors. Follow the manufacturer s recommendations for fuel additives or professional servicing.

- **Consider Upgrades if Needed**: If you plan to modify the vehicle significantly (e.g., adding a turbocharger or aggressive tuning), research whether the HERKO INJ771 can support the increased fuel flow. In some cases, upgrading to larger or higher-quality injectors may be necessary.

- **DIY Installation with Caution**: If you are comfortable with basic mechanical work, the installation should be straightforward. However, if you are unsure, consult a professional mechanic to avoid potential mistakes that could damage the injectors or fuel system.

**Final Verdict**: The HERKO INJ771 is a **strong, cost-effective replacement injector** for the specified Ford vehicles, particularly for those looking to restore stock performance or prepare for mild upgrades. For most users, it will deliver reliable service with proper care. However, those seeking the absolute best longevity or planning aggressive modifications may want to explore premium brands as an alternative.

Details:

Herko B061 Ignition Coils For Ford Lincoln V8 4.6L 2004 -2010. Due to the complexity of installing fuel pumps, Alan's Deals requires all its pump repair kits be installed by a certified technician. Products purchased in bulk surplus may contain scratches or blemishes that will not impact their performance. These remedies are the sole and exclusive for any Breach of Warranty.

Actual product may vary from the picture provided. Manufacture: Number: Part type: OEM 4L8Z-9F593-AA Fuel Injector Standard Motor Products FJ461 Injector, Herko Automotive IF14 ITF13 INJ771 IF13. Warranty Conditions. Fitment with aftermarket components will vary.

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part #: inj771 prices

  • $15.20-$20.90

specifications carfuelinjector:

  • for models: Escape, Explorer
  • for makes: Ford, Mercury
  • for years: 2004-2009
  • brand: Herko Automotive
  • mpn: Inj771
  • type: Fuel Injector
  • ipn: 4l8z-9f593-aa Fj461 If14 Itf13 Inj771 If13
  • packaging: Herko Automotive Box
  • fitment: Direct Fit Application, Check Fitment Chart
  • manufacturer warranty: Yes
  • warranty info: 1 Year Replacement Warranty
  • items included: 1x Inj771 Herko Automotive Fuel Injector

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  • options: Ship-to-home
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  • started: April 29, 2026
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  • Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors

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for models: escape, explorer, for makes: ford, mercury, for years: 2004-2009, type: fuel injector, packaging: herko automotive box, fitment: direct fit application, check fitment chart, manufacturer warranty: yes, warranty info: 1 year replacement warranty, items included: 1x inj771 herko automotive fuel injector,
category: auto parts > air fuel delivery > fuel injection parts > fuel injectors, sku: 16165352597773663,
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