Dorman 904-623 HVAC Pressure Switch
Confirm Fitment Before You Buy
Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$38.89
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Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
Product Description
Air conditioning stopped working? It could be as simple as the pressure switch. This replacement A/C transducer switch is the fix for corroded terminals or a broken connector on the original switch. A direct replacement to restore air conditioning.
- Direct replacement - this A/C transducer switch is an exact replacement for the original switch
- Simple repair - this A/C switch replaces an existing switch with corroded terminals or a broken connector
- Easy installation - no special tools required
- Quality tested - switch has been tested to ensure proper fit and function
Detailed Applications
| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| 1993 | Buick | Riviera | |||
| 1993 | Cadillac | DeVille | |||
| 1993 | Cadillac | Eldorado | |||
| 1993 | Cadillac | Fleetwood | |||
| 1993 | Cadillac | Seville | |||
| 1992 | Buick | Riviera | |||
| 1992 | Cadillac | Brougham | |||
| 1992 | Cadillac | DeVille | |||
| 1992 | Cadillac | Eldorado | |||
| 1992 | Cadillac | Fleetwood | |||
| 1992 | Cadillac | Seville | |||
| 1992 | Oldsmobile | Toronado | |||
| 1991 | Buick | Reatta | |||
| 1991 | Buick | Riviera | |||
| 1991 | Cadillac | Brougham | |||
| 1991 | Cadillac | DeVille | |||
| 1991 | Cadillac | Eldorado | |||
| 1991 | Cadillac | Fleetwood | |||
| 1991 | Cadillac | Seville | |||
| 1991 | Oldsmobile | Toronado | |||
| 1990 | Buick | Reatta | |||
| 1990 | Buick | Riviera | |||
| 1990 | Cadillac | Brougham | |||
| 1990 | Cadillac | DeVille | |||
| 1990 | Cadillac | Eldorado | |||
| 1990 | Cadillac | Fleetwood | |||
| 1990 | Cadillac | Seville | |||
| 1990 | Oldsmobile | Toronado | |||
| 1989 | Buick | Reatta | |||
| 1989 | Buick | Riviera | |||
| 1989 | Cadillac | Brougham | |||
| 1989 | Cadillac | DeVille | |||
| 1989 | Cadillac | Eldorado | |||
| 1989 | Cadillac | Fleetwood | |||
| 1989 | Cadillac | Seville | |||
| 1989 | Oldsmobile | Toronado | |||
| 1988 | Buick | Reatta | |||
| 1988 | Buick | Riviera | |||
| 1988 | Cadillac | Brougham | |||
| 1988 | Cadillac | DeVille | |||
| 1988 | Cadillac | Eldorado | |||
| 1988 | Cadillac | Fleetwood | |||
| 1988 | Cadillac | Seville | |||
| 1988 | Oldsmobile | Toronado | |||
| 1987 | Buick | Riviera | |||
| 1987 | Cadillac | Brougham | |||
| 1987 | Cadillac | DeVille | |||
| 1987 | Cadillac | Eldorado | |||
| 1987 | Cadillac | Fleetwood | |||
| 1987 | Cadillac | Seville |
Product Specifications
| Amperage Rating: | 4 A |
|---|---|
| Color: | Silver |
| Connector Color: | Black |
| Connector Gender: | Female |
| Connector Shape: | Circular |
| Housing Material: | Metal |
| Maximum Pressure Reading: | 350 PSI |
| Mount Type: | Screw On |
| Mounting Bracket Included: | No |
| Package Contents: | 1 A/C Pressure Switch |
| Pressure Limit Closed: | 10 PSI |
| Pressure Limit Open: | 20 PSI |
| Refrigerant Type: | R134A |
| Terminal Gender: | Male |
| Terminal Quantity: | 2 |
| Terminal Type: | Blade |
| Thread Diameter: | 7/16-20 |
| Universal Or Specific Fit: | Specific |
| Voltage: | 13 VDC |
| Wire Quantity: | 0 |
OE Numbers
| DIRECT OE CROSS | |
|---|---|
| 1631399 | GENERAL MOTORS |