Four Seasons 35490 HVAC Blower Motor - Rear

Four Seasons 35490 Blower Motor Overview

The Four Seasons 35490 blower motor is a new OE replacement HVAC blower motor built for 12-volt systems with a single-shaft design. It features a D-shaped shaft, OE mount, and clockwise/counterclockwise rotation, making it a direct-fit option for select rear HVAC applications.

Compatible with 1986-1989 Ford Aerostar rear blower motor applications, this Four Seasons blower motor is specified for vehicles without A/C and with a rear auxiliary heater. The 35490 part number is also commonly referenced in HVAC blower motor cross-reference listings for the same application.

Key Features

• 12-volt HVAC blower motor for automotive heating and cooling systems
• Single-shaft design with D-shaped shaft for OE-style fitment
• OE mount configuration for factory-style installation
• CW/CCW rotation for application flexibility
• Metal construction with non-vented motor design
• Two lead wires; connector not included
• Blower motor only, without wheel

Product Details

Four Seasons Blower Motor line parts are built for replacement use in vehicle HVAC systems where the cabin fan motor has failed or is operating inconsistently. Part number 35490 measures 3.000 inches in motor diameter and 3.875 inches in motor length, with a 1.4375-inch shaft length and 0.3125-inch shaft diameter. The D-shaped shaft and OE mount help match factory-style rear HVAC blower motor layouts found in the Ford Aerostar.

Fits 1986-1989 Ford Aerostar, rear. Fits 1986-1989 Ford Aerostar, rear, w/o Wheel; w/o AC; w/ Rear Auxiliary Heater; Blower Motor. This part cross-references UAC BM3636 for the same application.

Common Problems This Part Can Address

• No cabin airflow from the rear HVAC system
• Weak or intermittent blower operation
• Noise from a worn or failing blower motor
• Rear heater airflow loss in Aerostar applications
• Electrical failure in the HVAC fan motor circuit

Installation Notes and Tips

Verify the OE mount, shaft shape, and rear HVAC configuration before installation. This blower motor uses two lead wires and does not include a connector, so the vehicle-side wiring connection should be confirmed before service. Because this application is listed without a wheel, reuse or separate sourcing of the blower wheel should be verified against the vehicle’s original setup.

Quality Assurance

Four Seasons 35490 is a new OE replacement HVAC blower motor built to match the listed factory application details for select Ford Aerostar rear heater systems. Confirm fitment by year, position, and HVAC configuration before installation.