Standard Ignition RY-55 HVAC Automatic Temperature Control (ATC) Relay

Name: Standard Ignition RY-55 HVAC Automatic Temperature Control (ATC) Relay
Brand: Standard Ignition
SKU: FBHK-RY-55
Price: 22.41 USD
Availability: InStock

⚙️ 207 vehicles fit this part

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🚗Fitment: Isuzu, Acura, Geo, Chevrolet, and Nissan, Trooper, SLX, Pickup, Rodeo, Amigo, Stylus, Impulse, Storm, Spectrum, I-Mark, Maxima, Pulsar NX, Stanza, 200SX, 280ZX, and Pulsar

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Not what you need? Click here for all HVAC Automatic Temperature Control (ATC) Relay options

Reliable HVAC Automatic Temperature Control Relay for Select Vehicles

The Standard Ignition RY-55 HVAC Automatic Temperature Control (ATC) Relay is designed to provide consistent performance for your vehicle's climate control system. Compatible with various Acura, Chevrolet, Geo, Isuzu, and Nissan models, this relay ensures proper operation of your HVAC system.

Compatible with Acura, Chevrolet, Geo, Isuzu, and Nissan vehicles
Fits models including 200SX, 280ZX, Amigo, I-Mark, Impulse, Maxima, Pickup, Pulsar, Pulsar NX, Rodeo, SLX, Spectrum, Storm, Stylus, and Trooper
Part number RY-55 for precise identification
Designed for HVAC Automatic Temperature Control systems
Durable construction for reliable electrical switching

Product Overview and Compatibility

The Standard Ignition RY-55 relay is engineered to work specifically with HVAC Automatic Temperature Control systems in a range of vehicles from Acura, Chevrolet, Geo, Isuzu, and Nissan. This relay plays a critical role in managing the electrical signals that regulate your vehicle’s heating and cooling functions. By ensuring proper relay operation, the RY-55 helps maintain consistent cabin temperature and system responsiveness in models such as the Nissan 200SX and 280ZX, Chevrolet Amigo and Pickup, and Isuzu Rodeo and Trooper.

Common Applications and Issues Addressed

Restores proper HVAC system function when temperature control is unresponsive
Resolves intermittent heating or cooling failures linked to relay malfunction
Eliminates electrical faults causing HVAC system shutdowns
Prevents relay-related HVAC blower motor issues
Supports stable operation of automatic temperature control circuits

Installation Notes and Tips

Installation of the Standard Ignition RY-55 relay should be performed with the vehicle powered off to avoid electrical hazards. Locate the HVAC relay panel according to your vehicle’s service manual, and ensure the old relay is fully disconnected before installing the replacement. Verify the part number RY-55 matches the original relay to ensure compatibility. After installation, test the HVAC system to confirm proper operation of the automatic temperature control functions.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing reliable performance for your vehicle’s HVAC system. The RY-55 relay undergoes rigorous quality control to ensure durability and consistent electrical function. Warranty coverage details vary by distributor, so please consult your point of purchase for specific warranty information.

Brand	Standard Ignition
Part Number	RY-55
Amperage Rating	30 A
Connector Gender	Male
Contents	Relay
Continuous Duty	No
Functions	Fuel Pump Relay
Mounting Bracket(s) Included	Yes
Terminal Gender	Male
Terminal Type	Blade
Voltage	12

This part fits 207 vehicles. Search below:

Year	Make	Model	Transmission	Liters	Cylinders	Position	Notes
2002	Isuzu	Trooper				N/A
2001	Isuzu	Trooper				N/A
2000	Isuzu	Trooper				N/A
1999	Acura	SLX				N/A
1999	Isuzu	Trooper				N/A
1999	Isuzu	Trooper	Manual			N/A
1998	Acura	SLX				N/A
1998	Isuzu	Trooper				N/A
1998	Isuzu	Trooper	Manual			N/A
1997	Acura	SLX				N/A
1997	Isuzu	Trooper				N/A
1997	Isuzu	Trooper	Manual			N/A
1996	Acura	SLX				N/A
1996	Isuzu	Trooper				N/A
1996	Isuzu	Trooper	Manual			N/A
1995	Isuzu	Pickup				N/A
1995	Isuzu	Pickup		2.6L	L4	N/A
1995	Isuzu	Rodeo		3.2L	V6	N/A
1995	Isuzu	Rodeo				N/A
1995	Isuzu	Rodeo				N/A	To 4/95
1995	Isuzu	Trooper				N/A
1994	Isuzu	Amigo				N/A
1994	Isuzu	Pickup				N/A
1994	Isuzu	Pickup		3.1L	V6	N/A
1994	Isuzu	Pickup		2.6L	L4	N/A
1994	Isuzu	Pickup		2.3L	L4	N/A
1994	Isuzu	Pickup	Automatic			N/A
1994	Isuzu	Rodeo				N/A
1994	Isuzu	Rodeo		2.6L	L4	N/A
1994	Isuzu	Rodeo		3.2L	V6	N/A
1994	Isuzu	Trooper				N/A
1993	Isuzu	Amigo				N/A
1993	Isuzu	Amigo	Automatic			N/A
1993	Isuzu	Pickup		3.1L	V6	N/A
1993	Isuzu	Pickup				N/A
1993	Isuzu	Pickup		2.6L	L4	N/A
1993	Isuzu	Pickup		2.3L	L4	N/A
1993	Isuzu	Pickup	Automatic			N/A
1993	Isuzu	Rodeo		3.2L	V6	N/A
1993	Isuzu	Rodeo				N/A
1993	Isuzu	Rodeo		2.6L	L4	N/A
1993	Isuzu	Stylus				N/A
1993	Isuzu	Trooper				N/A
1992	Isuzu	Amigo	Automatic			N/A
1992	Isuzu	Amigo				N/A
1992	Isuzu	Impulse				N/A
1992	Isuzu	Pickup		2.6L	L4	N/A
1992	Isuzu	Pickup		3.1L	V6	N/A
1992	Isuzu	Pickup				N/A
1992	Isuzu	Pickup		2.3L	L4	N/A
1992	Isuzu	Pickup	Automatic			N/A
1992	Isuzu	Rodeo		2.6L	L4	N/A
1992	Isuzu	Rodeo		3.1L	V6	N/A
1992	Isuzu	Rodeo				N/A
1992	Isuzu	Stylus				N/A
1992	Isuzu	Trooper				N/A
1991	Geo	Storm	Automatic			N/A	Park/Neutral Position
1991	Geo	Storm	Automatic			N/A
1991	Isuzu	Amigo				N/A
1991	Isuzu	Impulse				N/A
1991	Isuzu	Pickup				N/A
1991	Isuzu	Pickup		2.6L	L4	N/A
1991	Isuzu	Pickup		3.1L	V6	N/A
1991	Isuzu	Pickup		2.3L	L4	N/A
1991	Isuzu	Pickup	Automatic			N/A
1991	Isuzu	Rodeo				N/A
1991	Isuzu	Rodeo		2.6L	L4	N/A
1991	Isuzu	Rodeo		3.1L	V6	N/A
1991	Isuzu	Stylus				N/A
1991	Isuzu	Trooper				N/A
1990	Geo	Storm	Automatic			N/A	Park/Neutral Position
1990	Geo	Storm	Automatic			N/A
1990	Isuzu	Amigo				N/A
1990	Isuzu	Amigo				N/A	5-blade terminal for automatic transmission spark control relay.
1990	Isuzu	Impulse				N/A
1990	Isuzu	Impulse				N/A	5-blade terminal for automatic transmission spark control relay.
1990	Isuzu	Pickup				N/A
1990	Isuzu	Pickup		2.6L	L4	N/A
1990	Isuzu	Pickup		2.3L	L4	N/A
1990	Isuzu	Pickup	Automatic			N/A
1990	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1990	Isuzu	Trooper				N/A
1990	Isuzu	Trooper				N/A	5 Term ABS Relay
1990	Isuzu	Trooper		2.6L	L4	N/A
1990	Isuzu	Trooper				N/A	5-blade terminal for automatic transmission spark control relay.
1989	Geo	Spectrum				N/A
1989	Isuzu	Amigo				N/A
1989	Isuzu	Amigo				N/A	5-blade terminal for automatic transmission spark control relay.
1989	Isuzu	I-Mark				N/A	5-blade terminal for automatic transmission spark control relay.
1989	Isuzu	I-Mark				N/A
1989	Isuzu	I-Mark		1.5L	L4	N/A
1989	Isuzu	I-Mark		1.6L	L4	N/A
1989	Isuzu	Impulse				N/A	5-blade terminal for automatic transmission spark control relay.
1989	Isuzu	Impulse				N/A
1989	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1989	Isuzu	Pickup				N/A
1989	Isuzu	Pickup		2.3L	L4	N/A
1989	Isuzu	Pickup		2.6L	L4	N/A
1989	Isuzu	Pickup	Automatic			N/A
1989	Isuzu	Trooper				N/A	5-blade terminal for automatic transmission spark control relay.
1989	Isuzu	Trooper				N/A
1989	Isuzu	Trooper				N/A	5 Term ABS Relay
1989	Isuzu	Trooper		2.6L	L4	N/A
1988	Chevrolet	Spectrum				N/A
1988	Isuzu	I-Mark				N/A	5-blade terminal for automatic transmission spark control relay.
1988	Isuzu	I-Mark				N/A
1988	Isuzu	Impulse				N/A	5-blade terminal for automatic transmission spark control relay.
1988	Isuzu	Impulse				N/A
1988	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1988	Isuzu	Pickup				N/A
1988	Isuzu	Pickup		2.6L	L4	N/A
1988	Isuzu	Pickup		2.3L	L4	N/A
1988	Isuzu	Pickup	Automatic			N/A
1988	Isuzu	Trooper				N/A	5-blade terminal for automatic transmission spark control relay.
1988	Isuzu	Trooper				N/A
1988	Nissan	Maxima				N/A
1987	Chevrolet	Spectrum				N/A
1987	Isuzu	I-Mark				N/A	5-blade terminal for automatic transmission spark control relay.
1987	Isuzu	I-Mark				N/A
1987	Isuzu	Impulse				N/A	5-blade terminal for automatic transmission spark control relay.
1987	Isuzu	Impulse				N/A
1987	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1987	Isuzu	Pickup		1.9L	L4	N/A
1987	Isuzu	Pickup		2.3L	L4	N/A
1987	Isuzu	Pickup				N/A
1987	Isuzu	Trooper				N/A	5-blade terminal for automatic transmission spark control relay.
1987	Isuzu	Trooper		2.3L	L4	N/A
1987	Isuzu	Trooper				N/A
1987	Nissan	Maxima				N/A
1986	Chevrolet	Spectrum				N/A
1986	Isuzu	I-Mark				N/A	5-blade terminal for automatic transmission spark control relay.
1986	Isuzu	I-Mark				N/A
1986	Isuzu	Impulse				N/A	5-blade terminal for automatic transmission spark control relay.
1986	Isuzu	Impulse				N/A
1986	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1986	Isuzu	Pickup				N/A
1986	Isuzu	Pickup		2.2L	L4	N/A
1986	Isuzu	Pickup		2.3L	L4	N/A
1986	Isuzu	Pickup		1.9L	L4	N/A
1986	Isuzu	Trooper				N/A	5-blade terminal for automatic transmission spark control relay.
1986	Isuzu	Trooper				N/A
1986	Isuzu	Trooper				N/A	5 Term ABS Relay
1986	Isuzu	Trooper		2.3L	L4	N/A
1986	Nissan	Maxima				N/A
1986	Nissan	Pulsar NX				N/A
1985	Chevrolet	Spectrum				N/A
1985	Isuzu	I-Mark				N/A	5-blade terminal for automatic transmission spark control relay.
1985	Isuzu	I-Mark				N/A
1985	Isuzu	I-Mark		1.5L	L4	N/A
1985	Isuzu	Impulse				N/A	5-blade terminal for automatic transmission spark control relay.
1985	Isuzu	Impulse				N/A
1985	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1985	Isuzu	Pickup				N/A
1985	Isuzu	Pickup		2.2L	L4	N/A
1985	Isuzu	Pickup		1.9L	L4	N/A
1985	Isuzu	Trooper				N/A	5-blade terminal for automatic transmission spark control relay.
1985	Isuzu	Trooper				N/A
1985	Isuzu	Trooper				N/A	5 Term ABS Relay
1985	Nissan	Maxima				N/A
1985	Nissan	Pulsar NX				N/A	5-blade terminal for automatic transmission spark control relay.
1985	Nissan	Pulsar NX				N/A
1984	Isuzu	I-Mark				N/A	5-blade terminal for automatic transmission spark control relay.
1984	Isuzu	I-Mark				N/A
1984	Isuzu	I-Mark				N/A	Heater; 5 Blade Term.
1984	Isuzu	Impulse				N/A	5-blade terminal for automatic transmission spark control relay.
1984	Isuzu	Impulse				N/A
1984	Isuzu	Impulse				N/A	Heater; 5 Blade Term.
1984	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1984	Isuzu	Pickup				N/A
1984	Isuzu	Trooper				N/A	5-blade terminal for automatic transmission spark control relay.
1984	Isuzu	Trooper				N/A
1984	Isuzu	Trooper				N/A	5 Term ABS Relay
1984	Isuzu	Trooper		1.9L	L4	N/A
1984	Nissan	Maxima		2.4L	L6	N/A
1984	Nissan	Pulsar NX				N/A	5-blade terminal for automatic transmission spark control relay.
1984	Nissan	Pulsar NX				N/A
1983	Isuzu	I-Mark				N/A	5-blade terminal for automatic transmission spark control relay.
1983	Isuzu	I-Mark				N/A
1983	Isuzu	I-Mark				N/A	Heater; 5 Blade Term.
1983	Isuzu	Impulse				N/A	5-blade terminal for automatic transmission spark control relay.
1983	Isuzu	Impulse				N/A
1983	Isuzu	Impulse				N/A	Heater; 5 Blade Term.
1983	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1983	Isuzu	Pickup				N/A
1983	Nissan	200SX				N/A
1983	Nissan	280ZX				N/A
1983	Nissan	Maxima				N/A
1983	Nissan	Pulsar				N/A	5-blade terminal for automatic transmission spark control relay.
1983	Nissan	Pulsar				N/A
1983	Nissan	Pulsar NX				N/A	5-blade terminal for automatic transmission spark control relay.
1983	Nissan	Pulsar NX				N/A
1982	Isuzu	I-Mark				N/A	5-blade terminal for automatic transmission spark control relay.
1982	Isuzu	I-Mark				N/A
1982	Isuzu	I-Mark				N/A	Heater; 5 Blade Term.
1982	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1982	Isuzu	Pickup				N/A
1982	Nissan	200SX				N/A
1982	Nissan	280ZX				N/A
1982	Nissan	Maxima				N/A
1981	Isuzu	I-Mark				N/A
1981	Isuzu	I-Mark				N/A	Heater; 5 Blade Term.
1981	Isuzu	I-Mark				N/A	5-blade terminal for automatic transmission spark control relay.
1981	Isuzu	Pickup				N/A	5-blade terminal for automatic transmission spark control relay.
1981	Isuzu	Pickup				N/A
1981	Nissan	200SX				N/A
1981	Nissan	280ZX				N/A
1980	Nissan	280ZX				N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1825502940198471R1242203-005025-015525230W13002JR123603356-17075822500290889225948942184970AR269AR269SBJR12R4001RAA1524W806

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.