Standard Ignition RY-874 HVAC Automatic Temperature Control (ATC) Relay

HVAC Relay for Automatic Temperature Control

Standard Ignition RY-874 is a 12-volt HVAC automatic temperature control relay built for vehicles that use a female rectangular connector and 4 male blade terminals. It includes a mounting bracket for secure installation and is rated at 25 amps for relay operation in the climate control circuit.

Compatible With 2000-2006 Kia Spectra, 2005-2006 Kia Spectra5, and 2005-2007 Hyundai Tucson applications, this relay supports HVAC system control where the original unit has failed or become intermittent. The Standard Ignition RY-874 is a direct-fit service part for common temperature control relay replacement needs.

Key Features

• Part number: RY-874
• HVAC automatic temperature control relay
• 12-volt electrical system
• 25 amp amperage rating
• Female rectangular connector
• 4 male blade terminals
• Includes mounting bracket
• Single relay function for HVAC control circuits

Detailed Description

Standard Ignition RY-874 is an HVAC ATC relay used in climate control systems that rely on relay switching for temperature management functions. Its rectangular connector design, blade-style terminals, and included bracket support a clean replacement in the original mounting location. For buyers searching for a 2000-2006 Kia Spectra HVAC relay, a 2005-2006 Kia Spectra5 automatic temperature control relay, or a 2005-2007 Hyundai Tucson HVAC relay, this part number matches the listed applications.

This part cross-references Gates 20776 for the same application.

What It Helps Fix

• HVAC blower or control circuit that stops responding
• Intermittent temperature control operation
• Relay clicking without consistent system engagement
• Climate control electrical faults tied to a worn relay
• Replacement needs for a failed OEM-style HVAC relay

Installation Notes and Tips

• Verify connector shape, terminal count, and mounting location before installation.
• Confirm the vehicle uses a 12-volt HVAC relay with a 25 amp rating.
• Inspect the relay socket and terminals for heat damage or corrosion before fitting the new part.
• Match the application to the listed vehicle years for Kia Spectra, Kia Spectra5, and Hyundai Tucson.

Quality Assurance

Standard Ignition replacement electrical components are built to meet the application-specific requirements of the listed HVAC relay fitments. Part number RY-874 is cataloged for direct replacement use in the confirmed vehicle applications shown above.