Four Seasons 20738 HVAC Blower Motor Resistor

HVAC Blower Motor Resistor Overview

Four Seasons 20738 is an HVAC blower motor resistor built for direct replacement service in select Audi and Porsche applications. It meets or exceeds OEM requirements and uses a female/female connector layout with blade terminals for a precise electrical connection.

Key Features

• Meets or exceeds OEM specifications for the application.
• Female/female connector design with square and rectangle connector shapes.
• Blade terminal construction with 4 / 2 terminal configuration.
• Engineered and tested for long service life.
• Four Seasons Motor Resistor line backed by more than 50 years of mobile A/C experience.

Detailed Description

This Four Seasons blower motor resistor, part number 20738, is used to control blower motor speed in compatible HVAC systems. It is a fitment-based replacement for select Porsche Macan models and several Audi platforms, including A4, A5, Q5, S4, S5, SQ5, RS5, allroad, and related Quattro applications. This part cross-references Dorman - HELP 20738 for the same application.

The Motor Resistor product line focuses on OE-style electrical replacement parts for climate control repair. Four Seasons 20738 is built to restore proper blower operation when the original resistor has failed or the HVAC fan no longer responds correctly at certain speed settings. The part number 20738 is commonly searched for Audi A4 blower motor resistor and Porsche Macan HVAC resistor replacement needs.

What It Is Used For

• Restoring blower fan speed control when one or more speeds stop working.
• Replacing a failed HVAC resistor that causes intermittent cabin airflow.
• Correcting electrical resistance issues in the blower motor circuit.
• Addressing HVAC fan operation problems in Audi and Porsche climate systems.

Installation Notes and Tips

Verify connector style, terminal count, and vehicle fitment before installation. Match the part number 20738 to the original resistor configuration and confirm the application against the vehicle's HVAC system details. Use the listed fitment data for exact compatibility with the specific Audi and Porsche models shown.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation. The brand also draws on more than 50 years of mobile A/C experience in HVAC component development.