Overview
The Omix-ADA 17903.05 is a black plastic fan switch knob, an OE style replacement for heater controls.
The knob is built to original specifications as a direct OE replacement for Jeep heater controls. It carries a limited five year warranty.
Key features
- Black plastic construction
- OE style replacement
- Built to original specifications
- Marked as a direct fit
- Limited five year warranty coverage
Heater control replacement tips
A fan switch knob is handled every time the heater or defroster is adjusted, so the plastic and the metal shaft inside it see steady wear. Over time the knob can loosen, crack at the base or lose the grip that makes the speed steps easy to feel. Before removing an old knob, note which way it sits and which position it is in, since reinstalling it at a different angle can shift the apparent fan speed settings.
Most knobs pull straight off the control shaft, though some are held by a small clip or set screw. Pull gently rather than prying at the control face, which can damage the switch underneath. When fitting the new knob, press it on until it seats fully, then check each fan speed before driving so the heater responds correctly at low and high settings.
- Check the control face for cracks first
- Test each fan speed after installing the knob
- Look for a set screw or clip before pulling
Specifications
| Brand | Omix-Ada |
|---|---|
| Part number | 17903.05 |
| UPC | 804314032647 |
| Color | Black |
| Material | Plastic |
| Style | OE replacement |
| Fit | Direct fit |
| Warranty | Limited five year warranty |
Vehicle fitment
The knob is marked as a direct fit for Jeep parts, but no year range or model is named.
Confirm your vehicle’s year, model and trim before ordering, since the knob has to match your heater control.
What’s included
Check the package contents against your heater control before installing.












