Keep a reliable eye on engine oil pressure with the Standard Ignition Engine Oil Pressure Switch PS-133. This switch senses oil pressure and signals the vehicle's data monitoring system, driving the dashboard gauge or low-oil-pressure warning lamp. Backed by the manufacturer's direct-replacement OE fit, it drops in as a direct-fit replacement across dozens of 1978–1993 domestic applications — including the 1978-1980 American Motors AMX, 1983-1989 Chrysler Fifth Avenue, 1978-1990 Dodge D150, 1978-1990 Dodge Ramcharger, 1988-1993 Dodge Dakota, and 1978-1981 Jeep Wagoneer. With 78 total applications, see the Buyer's Guide tab for the full list.
- High-temperature diaphragm: built with a high-temperature polyimide film diaphragm for cycle durability and resistance to rupture and oil leakage, and designed to handle rapid pressure pulsations without component damage.
- Accurate reading: engineered to provide a highly accurate, timely oil pressure reading to the vehicle's data monitoring system.
- 100% tested: each unit is tested on vehicles and with automated equipment that activates the switch, checks for leaks, and stresses the part to verify specification compliance.
- Three male blade terminals with a male connector.
Signs this switch may need replacing include a false or flickering oil-pressure warning light, an erratic or dead gauge reading, or oil seepage at the switch body. If a failed pressure switch is the cause, this replaces it; diagnose the cause before ordering. Country of origin: Mexico. Manufacturer part number PS-133 (also PS133).
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this oil pressure switch do?
It senses engine oil pressure and signals the vehicle's data monitoring system, driving the dashboard oil-pressure gauge or the low-pressure warning lamp.
Will the PS-133 fit my vehicle?
It's cataloged as a direct-fit replacement for 78 applications, including many 1978-1993 American Motors, Chrysler, Dodge and Jeep models. Check the Buyer's Guide tab to confirm your exact vehicle.
What are the signs this switch may need replacing?
Common signs include a false or flickering oil-pressure warning light, an erratic or dead gauge reading, or oil seepage at the switch. Diagnose the cause before replacing.
What terminals and connector does it use?
It has three male blade terminals with a male connector.
How is this switch tested?
Each unit is 100% tested on vehicles and with automated equipment that activates the switch, checks for leaks, and stresses the part to verify specification compliance.
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