Holley EFI Coolant Temperature Sensor

Universal Fitment for Holley EFI Systems

570-228

Overview:

The Holley EFI Coolant Temperature Sensor is a precision-engineered component designed to provide accurate temperature readings for your engine management system. Essential for any Holley EFI-powered vehicle, this sensor ensures your engine control unit (ECU) receives reliable data to optimize fuel delivery and ignition timing based on coolant temperature. Whether you're building a new EFI setup or servicing an existing one, this sensor is a critical part of maintaining peak engine performance and reliability.

Designed specifically for Holley EFI systems, this coolant temperature sensor integrates seamlessly with your wiring harness and ECU, delivering consistent and accurate temperature feedback. It is ideal for automotive enthusiasts, professional tuners, and engine builders who demand dependable sensor performance in their EFI applications.

Key Features:

The Holley EFI Coolant Temperature Sensor offers a range of features that make it a trusted choice for EFI enthusiasts and professionals alike:

• Genuine Holley EFI OEM quality for reliable performance
• Designed to work seamlessly with Holley EFI wiring harnesses and ECUs
• Accurate temperature readings to optimize engine tuning and fuel management
• Durable construction to withstand harsh engine bay conditions
• Includes high-quality Molex 2-cavity female connector with pins, seals, and TPA for secure and weather-resistant connections
• Compatible with a wide range of Holley EFI-powered vehicles and setups
• Easy integration with Holley EFI Wiring Shop components for complete wiring solutions

Construction & Design:

Built with durability and precision in mind, the Holley EFI Coolant Temperature Sensor features robust materials engineered to endure the demanding environment of the engine bay. The sensor element is housed within a corrosion-resistant casing that ensures long-term reliability and consistent performance. The included Molex connector assembly is crafted from high-quality materials, providing secure, weatherproof connections that resist vibration and moisture intrusion.

The sensor’s design prioritizes accurate thermal response, enabling your Holley EFI system to make real-time adjustments for optimal engine operation. This attention to detail in construction ensures dependable sensor output, which is critical for maintaining engine efficiency and preventing overheating.

Installation & Fitment:

Installation of the Holley EFI Coolant Temperature Sensor is straightforward and designed to integrate seamlessly with Holley EFI wiring harnesses. The sensor connects directly to the included Molex 2-cavity female connector, which comes complete with pins, seals, and terminal position assurance (TPA) for a secure and reliable connection. This plug-and-play compatibility reduces installation time and minimizes wiring errors.

The sensor is compatible with all Holley EFI systems and can be used universally across various engine platforms equipped with Holley EFI. No special modifications are required, making it an ideal replacement or upgrade part for EFI enthusiasts and professionals.

What's Included:

• Holley EFI Coolant Temperature Sensor
• Molex 2-cavity female connector
• Connector pins
• Seals for weatherproofing
• Terminal Position Assurance (TPA) device

Ideal For:

This coolant temperature sensor is perfect for anyone running a Holley EFI system who requires accurate and reliable temperature data for engine management. It is especially suited for:

• Performance enthusiasts building or upgrading EFI-powered vehicles
• Professional tuners seeking precise sensor feedback for engine calibration
• Engine builders and mechanics performing maintenance or repairs on Holley EFI setups
• DIY installers looking for a complete wiring solution with OEM-quality components

Holley EFI delivers standalone engine management and EFI systems built for everything from engine swaps to serious horsepower builds. With platforms like Sniper, Terminator X, HP, and Dominator, Holley EFI is aimed at enthusiasts who want modern tuning control, data, and drivability—whether it’s a street car, track car, or full-on race program.