HOLLEY 522-161 Fuel Injector 090127686577

( Brand: Holley ), ( Manufacturer Part Number: 522-161 ), ( Part Type: Fuel Injector ), ( Country Of Origin: Usa ), ( UPC: 090127686577 )

Review HOLLEY Fuel Injector

The **Holley 522-161 Fuel Injector** is a high-performance, high-flow component designed to deliver precise and reliable fuel delivery for demanding applications, making it an ideal choice for enthusiasts and professional tuners working on high-output engines, turbocharged setups, or forced-induction builds. Engineered with Holley s reputation for durability and performance in mind, this injector is part of the company s **522 series**, which is renowned for its robust construction and ability to handle extreme fueling demands without compromising on accuracy. Built with a **16-hole nozzle design**, the 522-161 injector features a **16 lb/hr flow rate**, which positions it as a versatile option for engines producing between **400 to 600 horsepower**, depending on the application, fuel pressure, and tuning strategy. The injector s **stainless steel body and needle** ensure resistance to corrosion and wear, even under the most aggressive driving conditions or in environments where fuel quality may vary. Holley s proprietary **dual-layer coating** on the internal components further enhances longevity by reducing friction and preventing galling, which is particularly beneficial in high-temperature scenarios where traditional injectors might struggle. This injector is compatible with **Holley s EEC-IV and EEC-V electronic fuel injection systems**, as well as aftermarket ECUs, making it a seamless fit for both stock and modified setups. Whether integrated into a **big-block Chevy, Ford Modified, or LS-based engine**, the 522-161 excels in maintaining consistent fuel atomization, which is critical for optimal combustion efficiency and power delivery. For tuners, the injector s **linear response** ensures that fuel delivery scales proportionally with demand, allowing for fine-tuned adjustments to maximize performance while minimizing fuel waste. Additionally, Holley s **lifetime warranty** on the injector underscores the confidence in its build quality, providing peace of mind for builders who demand nothing less than the best in fuel injection technology. Whether you're pushing a naturally aspirated engine to its limits or fine-tuning a turbocharged monster, the **Holley 522-161 Fuel Injector** stands as a dependable workhorse, blending precision engineering with the ruggedness required to handle the most aggressive fueling scenarios.

### **Pros and Cons of Buying a Holley 522-161 Fuel Injector**

The Holley 522-161 is a high-quality, high-flow fuel injector designed for performance applications, particularly in muscle cars, trucks, and high-performance engines. Its advantages include:

1. **High Flow Capacity** The 522-161 is rated for **522 pounds per hour (pph)** of fuel flow, making it suitable for engines requiring significant fuel delivery, such as forced-induction setups (turbocharged or supercharged) or high-compression naturally aspirated engines.

2. **Durability and Reliability** Holley is a well-established brand in the fuel injection industry, known for producing injectors that last under heavy loads. These injectors are built to handle prolonged use without excessive wear.

3. **Compatibility with Holley EFI Systems** If you're running a Holley electronic fuel injection (EFI) system (such as the **EFI-1600, EFI-2000, or EFI-3000**), this injector integrates seamlessly with their controllers, allowing for precise fuel metering and tuning.

4. **Wide Application Range** Beyond Holley systems, these injectors work well with aftermarket ECUs like **Megajolt, Link, or AEM**, making them versatile for custom builds.

5. **Good for Forced Induction** If you're running a turbo or supercharger, the 522-161 can handle the increased fuel demand, though pairing it with a **fuel pump capable of 100 GPH** is essential.

6. **Available in Different Configurations** Holley offers this injector in **single-point (single injector) and multi-point (multiple injectors) setups**, allowing for flexibility depending on engine needs.

7. **Aftermarket Support** Holley injectors are widely supported by tuners, mechanics, and online forums, making troubleshooting and upgrades easier.

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1. **Cost** These injectors are **more expensive** than basic OEM or budget injectors (e.g., $200 $400 per injector, depending on quantity). For a single injector, the price can be prohibitive unless you're building a high-performance system.

2. **Requires Proper Tuning** Unlike plug-and-play solutions, these injectors need **ECU tuning** to match fuel delivery with engine demands. Poor tuning can lead to **lean or rich conditions**, reducing performance or damaging the engine.

3. **Fuel Pump Requirements** A **high-capacity fuel pump (100 GPH)** is necessary to feed these injectors, especially under boost. A weak pump can cause **fuel starvation**, leading to poor performance or injector failure.

4. **Wiring and Electrical Considerations** Holley injectors require **proper wiring and fusing** to prevent electrical issues. Cheap wiring or insufficient fusing can damage the injectors or ECU.

5. **Not Ideal for Stock or Mild Builds** If you're running a **stock or lightly modified engine**, these injectors may be **overkill** and unnecessarily expensive. Smaller injectors (e.g., 300 400 pph) would suffice.

6. **Potential for Clogging** Like all fuel injectors, Holley 522-161s can **clog over time** if fuel quality is poor or if they're not cleaned regularly. Using **high-quality fuel additives** (like **Seafoam or Techron**) helps mitigate this.

7. **Installation Complexity** Proper installation requires **precise fuel rail setup, O-rings, and sealing**, which can be tricky for beginners. Improper installation may lead to **leaks or poor atomization**.

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The **Holley 522-161 fuel injector** is an excellent choice for **high-performance applications**, particularly in **turbocharged, supercharged, or heavily modified engines** where fuel demand is high. Its **durability, flow capacity, and compatibility with Holley systems** make it a reliable option for serious builders.

However, it is **not ideal for stock or mild builds**, as the cost and tuning requirements may not justify the investment. If you're running a **high-horsepower setup**, this injector will deliver strong performance but only if paired with the right **fuel pump, ECU tuning, and wiring**.

- You're running a **turbocharged, supercharged, or high-compression naturally aspirated engine** (500 hp).

- You're using a **Holley EFI system** or a compatible aftermarket ECU.

- You have a **high-capacity fuel pump (100 GPH)** and proper wiring.

- You're willing to invest in **tuning and maintenance** for optimal performance.

- You're on a **budget** and only need mild performance upgrades.

- Your engine is **stock or lightly modified** (consider smaller injectors like 300 400 pph).

- You lack experience with **fuel injection tuning and electrical systems**.

For most **high-performance builds**, the **Holley 522-161 is a solid, high-quality injector** but it s not a "set and forget" solution. Proper setup, tuning, and maintenance are essential for long-term reliability. If you're unsure, consulting a **performance tuner** before purchase is wise.

Details:

American Express.

part #: 522161 price

• $161.95

specifications carfuelinjector:

• brand: Holley
• mpn: 522-161
• part type: Fuel Injector
• country of origin: Usa
• upc: 090127686577

offer carfuelinjector:

• started: March 13, 2026
• options: Ship-to-home
• quantity: 10
• availability: In Stock
• sold: 0

seller carfuelinjector:

• rating: 99.3%
• city: , Ohio
• # reviews: 620358

general carfuelinjector:

• condition: New
• Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors

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shipping carfuelinjector:

• type: Fixed
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• service: Standard
• cost: $15.99
• class: Standard

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