1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your Mishimoto MMFAN-16 Slim Electric Radiator Fan. Please read these instructions carefully before proceeding with installation or use to ensure proper function and safety.
Safety Information
- Always disconnect the vehicle's battery before performing any electrical work.
- Wear appropriate personal protective equipment, including safety glasses and gloves.
- Ensure the vehicle is cool before working on the cooling system to avoid burns.
- Consult a qualified automotive technician if you are unsure about any installation steps.
2. Package Contents
Verify that all components are present before beginning installation:
- (1) Mishimoto Fan
- (4) Mounting Tabs
- Mishimoto Lifetime Warranty Information
3. Specifications
| Feature | Specification |
|---|---|
| Model Name | MMFAN-16 |
| Fan Diameter | 16 Inches (385mm) |
| Overall Thickness | 2.87 inches |
| CFM (Cubic Feet Per Minute) | 1850 |
| Fan RPM | 1800 |
| Number of Blades | 10 |
| Blade Style | Straight |
| Voltage | 12 Volts |
| Wattage | 3 watts |
| Noise Level | 50 Decibels |
| Installation Type | Universal (Mount Kit Required) |
| Reversibility | Pusher or Puller Fan |
4. Setup & Installation
The Mishimoto MMFAN-16 is designed for universal fitment and can be installed as an upgrade to OEM fans or for custom applications. A universal fan mount kit (e.g., Mishimoto P/N: MMFAN-MOUNT) is required for installation and is sold separately.
Installation Steps (General Guidelines):
- Preparation: Ensure the vehicle's engine is off and cool. Disconnect the negative terminal of the battery.
- Mounting: Position the fan against the radiator or condenser. Use the provided mounting tabs and a suitable mounting kit to secure the fan firmly. Ensure there is adequate clearance from other engine components.
- Wiring: Connect the fan's wiring to your vehicle's electrical system. The fan can be configured as either a pusher (mounted in front of the radiator, pushing air through) or a puller (mounted behind the radiator, pulling air through). The wiring polarity will determine the direction of airflow. Consult your vehicle's wiring diagram or a fan controller's instructions for correct electrical connections.
- Testing: Reconnect the battery. Start the vehicle and allow it to reach operating temperature to verify the fan activates correctly and provides adequate airflow.




5. Operating Instructions
Once properly installed and wired, the Mishimoto MMFAN-16 operates automatically in conjunction with your vehicle's cooling system or an aftermarket fan controller. The fan is designed to activate when the engine coolant temperature reaches a predetermined threshold, or when the air conditioning system is engaged, to maintain optimal engine operating temperatures.
- The fan provides 1850 CFM of airflow at 1800 RPM for efficient cooling.
- Its slim profile allows for flexible installation in various engine bay configurations.
- The fan can be easily reversed for use as a pusher or puller, depending on your specific cooling setup requirements.
6. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your electric radiator fan.
- Periodic Inspection: Visually inspect the fan blades, motor, and wiring for any signs of damage, wear, or corrosion. Ensure all mounting points remain secure.
- Cleaning: Keep the fan blades and grille free from debris, dirt, and obstructions. Use compressed air or a soft brush to gently clean the fan. Avoid using harsh chemicals that could damage plastic components.
- Electrical Connections: Periodically check all electrical connections for tightness and ensure they are free from corrosion.
7. Troubleshooting
If you experience issues with your Mishimoto MMFAN-16, consider the following common troubleshooting steps:
- Fan Not Activating:
- Check all electrical connections for proper contact and ensure they are securely fastened.
- Verify that the fan controller (if used) is receiving power and is correctly configured.
- Inspect fuses related to the fan circuit.
- Ensure the engine coolant temperature sensor is functioning correctly and sending the appropriate signal to activate the fan.
- Insufficient Cooling:
- Check for obstructions in front of or behind the fan that may impede airflow.
- Ensure the fan is configured for the correct airflow direction (pusher or puller) for your installation.
- Verify the radiator and condenser are clean and free of debris.
- Confirm the fan is operating at its rated speed.
- Excessive Noise/Vibration:
- Inspect fan blades for damage or imbalance.
- Ensure the fan is securely mounted and not making contact with other components.
If problems persist after troubleshooting, it is recommended to consult a professional automotive technician or contact Mishimoto customer support.
8. Warranty & Support
The Mishimoto MMFAN-16 Slim Electric Radiator Fan is backed by a Mishimoto Lifetime Warranty. This warranty covers defects in materials and workmanship for the lifetime of the product. For detailed warranty terms, conditions, and to initiate a warranty claim, please visit the official Mishimoto website or contact their customer support.
For additional support, technical assistance, or to purchase compatible accessories like mounting kits, please visit the Mishimoto Store on Amazon or the official Mishimoto website.





