Dorman 921-301 Engine Cooling Fan Motor Relay

Engine Cooling Fan Relay for Ram ProMaster

The Dorman 921-301 engine cooling fan motor relay restores the electrical switching function needed for proper radiator fan operation. Built with factory-style connectors and a 12-volt, 20-amp design, it is a direct-fit replacement for select Ram ProMaster applications.

Key Features

• 12-volt relay with 20-amp amperage rating
• Blade terminals with 2 male terminals for OE-style connection
• Plastic cover and heatsink-protected construction
• Bolt-on mounting type for secure installation
• Factory-style connectors for a clean electrical interface
• Engine cooling fan motor relay for radiator fan circuit service

Detailed Description

Dorman 921-301 is an engine cooling fan motor relay engineered to match the function and performance of the original relay used in the cooling system. It helps maintain proper fan circuit operation by switching power to the radiator fan motor when the vehicle’s cooling strategy calls for it. This relay is a direct replacement for Ram ProMaster 1500, Ram ProMaster 2500, Ram ProMaster 3500, Ram ProMaster City, and Ram ProMaster Rapid models in the listed years. This part cross-references Mopar 68099815AA for the same application.

For buyers searching for a Ram ProMaster cooling fan relay, radiator fan relay, or Dorman 921-301 replacement, this part is built for OE-style fitment and electrical connection points. It is a practical choice when servicing the cooling fan relay circuit on 2014-2019 Ram ProMaster 1500, 2500, and 3500 models, as well as 2015-2019 Ram ProMaster City and 2017-2019 Ram ProMaster Rapid applications.

Common Issues This Relay May Address

• Radiator fan not turning on when engine temperature rises
• Intermittent cooling fan operation
• Cooling fan circuit electrical switching faults
• Overheating concerns related to fan relay failure
• Need for an OE-style replacement relay in Ram ProMaster cooling systems

Installation Notes and Tips

Verify the relay connector style, terminal count, and mounting style before installation. This relay uses blade terminals, a male terminal gender, and bolt-on mounting. Confirm the vehicle’s cooling fan circuit diagnosis before replacing the relay, and inspect related wiring, connectors, and fuse protection for heat damage or corrosion.

Quality Assurance

Dorman tests this cooling fan relay for trouble-free service and builds it with factory-style connectors to support consistent electrical performance. The heatsink-protected design and durable construction are intended to meet the demands of the cooling fan circuit.