Four Seasons 35981 HVAC Relay

Four Seasons 35981 HVAC Relay Overview

Four Seasons 35981 is a standard 12-volt HVAC relay built for automotive climate control circuits that require a 4-terminal blade connection. It meets or exceeds OEM requirements and is configured with a rectangular female connector, male blade terminals, and a skirted standard relay design for direct replacement use.

The Four Seasons Relay line focuses on dependable electrical switching for heating and air conditioning systems. This relay is a practical OE-style replacement for vehicles that need a standard relay with a 20-amp rating and a compact, metal-bodied form factor.

Key Features

• 12-volt HVAC relay for automotive climate control circuits
• Standard relay style with skirted design
• 4 blade terminals with a single rectangular female connector
• 20-amp amperage rating
• Meets or exceeds OEM specifications
• Metal finish with no mounting bracket

Detailed Product Description

Four Seasons 35981 is an HVAC relay used in electrical control systems where a standard 12V relay is required. Its 4-terminal blade layout, female connector, and male terminal gender support straightforward replacement in applications that call for this relay configuration. The part number 35981 is also associated with interchange references used across the aftermarket, including Four Seasons 85221 and FEL-PRO 35981.

Compatible With Toyota Tercel, Toyota Celica, and Toyota Land Cruiser applications listed below, this relay supports HVAC circuit switching in select late-1970s through early-1990s Toyota vehicles. Use the exact connector style, terminal count, and relay shape to confirm match before installation.

Vehicle Fitment

• Fits 1983-1990 Toyota Tercel, N/A; Square Body; Relay
• Fits 1982-1984 Toyota Celica, N/A; 3 Blade Term.; Relay
• Fits 1980-1982 Toyota Tercel, N/A; Relay
• Fits 1980-1982 Toyota Tercel, N/A; Stamping No. 90987-01003; Relay
• Fits 1979-1980 Toyota Land Cruiser, N/A; Relay
• Fits 1980 Toyota Land Cruiser, N/A; No. 2; Relay

What It Helps Resolve

• HVAC relay failure causing intermittent blower or climate control operation
• Noisy, sticking, or non-responsive relay switching
• Electrical control issues in Toyota heating and air conditioning circuits
• Relay replacement needs for vehicles using a 12V, 4-terminal blade design

Installation Notes and Tips

Verify the relay footprint, terminal count, connector gender, and amperage rating against the original part before installation. Match the vehicle-specific notes, including square body, 3-blade terminal, stamping number 90987-01003, or No. 2 relay references where listed. Confirm the HVAC circuit diagnosis before replacing the relay to avoid repeat electrical faults.

Quality Assurance

Four Seasons 35981 is built to meet or exceed OEM requirements for the listed applications. The part number also cross-references Four Seasons 85221 for the same application.