HOLLEY EFI 570-226 Coyote Coolant Temperature Sensor 090127009598 Connector

( Brand: Holley Efi ), ( Manufacturer Part Number: 570-226 ), ( Part Type: Sensor ), ( UPC: 090127009598 )

Review HOLLEY EFI Coyote Coolant Temperature Sensor Connector

The **Holley EFI 570-226 Coyote Coolant Temperature Sensor Connector** is a precision-engineered replacement component designed specifically for Ford s 5.0L Coyote engine family, ensuring seamless integration with modern fuel-injected systems. This high-quality connector is crafted from durable, corrosion-resistant materials, including robust plastic and reinforced metal contacts, to guarantee long-term reliability and optimal electrical conductivity. The design features a secure, interference-fit housing that snaps effortlessly into place, eliminating the need for additional fasteners while maintaining a tight seal against moisture and debris critical for preventing short circuits or signal interference in demanding high-performance applications. Ideal for both stock and modified Coyote engines, this connector is engineered to match Ford s original specifications, ensuring compatibility with the engine s EFI system, including the coolant temperature sensor (CTS) and related wiring harnesses. Whether used in a daily driver, a high-horsepower build, or a restoration project, the 570-226 connector delivers the precision and durability required to maintain accurate engine temperature readings, which are essential for proper fuel delivery, ignition timing, and overall engine protection. Built to withstand the thermal and mechanical stresses of high-performance environments, this connector is a straightforward yet critical upgrade for anyone seeking to restore or enhance the performance of their Coyote-powered vehicle.

**Pros and Cons of buying a Holley EFI 570-226 Coyote Coolant Temperature Sensor Connector**

The **Holley EFI 570-226** is a coolant temperature sensor (CTS) connector designed for Ford Coyote engines (e.g., 3.5L EcoBoost, 5.0L Mustang GT). Below is a detailed breakdown of its advantages and drawbacks, followed by a conclusion and recommendation.

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### **Pros**

1. **Direct Compatibility**

The connector is specifically engineered for Ford Coyote engines, ensuring a proper fit with the factory coolant temperature sensor wiring harness. This reduces the risk of loose connections or improper installation, which can lead to inaccurate sensor readings or electrical issues.

2. **Improved Reliability**

Coyote engines are known for their complex wiring and sensor connections, where corrosion or poor crimping can cause intermittent problems. Holley s connector is designed to provide a secure, corrosion-resistant connection, reducing the likelihood of electrical failures related to the coolant temperature sensor.

3. **Easy Installation**

The connector is a direct replacement for the stock Coyote CTS connector, meaning it can be installed without extensive modifications to the wiring harness. This makes it a straightforward upgrade for DIYers or mechanics who may not want to rewire the entire system.

4. **High-Quality Materials**

Holley is a reputable manufacturer known for durable automotive electrical components. The connector likely uses sturdy terminals, heat-resistant insulation, and corrosion-resistant plating, which can extend the lifespan of the sensor and wiring.

5. **Prevents Common Issues**

Many Coyote engines suffer from water intrusion or corrosion in the CTS connector area, leading to erratic sensor readings or engine misfires. A new Holley connector can address these issues by providing a better seal and more reliable contact.

6. **Backward Compatibility**

If you re using aftermarket sensors (e.g., AEM, Motec, or other OEM replacements), this connector will work seamlessly with them, ensuring consistent performance regardless of the sensor brand.

7. **Warranty and Support**

Holley offers warranties on their products, and their customer support is generally reliable for troubleshooting installation or compatibility questions.

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### **Cons**

1. **Cost**

The connector is not cheap it s priced higher than a generic aftermarket part. While it s a targeted solution, budget-conscious buyers may opt for cheaper alternatives (though with potential trade-offs in quality).

2. **Limited Use Case**

This connector is **only** for Coyote engines. If you have a different Ford engine (e.g., 2.3L, 3.7L, or non-Coyote 5.0L), it won t fit, making it a niche purchase.

3. **Potential Overkill for Minor Issues**

If the original connector failure was due to a loose wire rather than corrosion or poor design, replacing just the connector may not fully resolve the problem. In such cases, a more comprehensive wiring inspection might be needed.

4. **Installation Requires Disassembly**

Accessing the CTS connector often requires removing the intake manifold or air intake components, which can be time-consuming for those unfamiliar with Coyote engine modifications.

5. **Dependence on Sensor Health**

If the **coolant temperature sensor itself** is faulty (not just the connector), replacing only the connector won t fix the underlying issue. A multimeter test is recommended before purchase to ensure the sensor is functioning.

6. **Mixed Reviews on Longevity**

While Holley parts are generally durable, some users report that even high-quality connectors can fail over time due to extreme conditions (e.g., high heat, constant moisture exposure). This is less about the connector itself and more about the environment it operates in.

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### **Conclusion**

The **Holley EFI 570-226 Coyote Coolant Temperature Sensor Connector** is a **highly specialized, reliable upgrade** for Ford Coyote engines experiencing CTS-related electrical issues. Its strengths lie in its **direct compatibility, improved durability, and ease of installation**, making it an excellent choice for those dealing with persistent connector failures. However, it is **not a universal fix** it requires the sensor itself to be functional, and it s only useful for Coyote applications.

If your engine is running fine but you re concerned about long-term reliability, this connector is a **preventative measure worth considering**. For those on a tight budget or with minor wiring issues, a cheaper connector might suffice but there s a risk of recurring problems.

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### **Recommendation**

- You re experiencing **intermittent CTS-related issues** (e.g., check engine lights for P0115, P0116, or P0117 codes).

- You ve **verified the sensor itself is good** (test with a multimeter).

- You want a **long-term, high-quality solution** for your Coyote engine.

- You re comfortable with **minor disassembly** to install it.

- Your issue is **not connector-related** (e.g., a bad sensor, wiring short, or harness damage).

- You re working on a **non-Coyote engine**.

- You re looking for the **cheapest possible fix** and can t confirm the connector is the root cause.

- If the connector is the only issue, a **high-quality aftermarket alternative** (e.g., from **MSD, JetMotive, or Ford Performance**) might be slightly cheaper while still offering good reliability.

- If the **entire wiring harness** is suspect, consider a **full replacement harness** for long-term peace of mind.

**Final Verdict:** For Coyote owners dealing with persistent CTS connector problems, the Holley part is a **solid, well-engineered solution** that justifies its cost. Proceed with installation only after confirming the sensor and wiring are otherwise sound.

Details:

From connectors and pins to wire loom tools. A signature is required on all UPS orders over $750. 570-226 Coyote Coolant Temperature Sensor Connector: MX 150, 2 CAVITY, FEMALE, BLACK. Buyer pays return shipping.

part #: 570226 prices

• $13.95-$39.23

specifications ocoosys:

• brand: Holley Efi
• mpn: 570-226
• part type: Sensor
• upc: 090127009598

returns ocoosys:

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

offer ocoosys:

• availability: In Stock
• options: Ship-to-home
• started: March 15, 2026
• sold: 0
• quantity: 3

seller ocoosys:

• city: Bowling Green, Kentucky
• # reviews: 2008 6
• rating: 99.6%

payments ocoosys:

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

shipping ocoosys:

• carrier: UPS
• service: UPS Ground
• cost: $11.95
• transit: 3-6 Days
• class: Standard
• type: Fixed

general ocoosys:

• condition: New
• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components

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