Standard Ignition PS-278 Engine Oil Pressure Switch

Engine Oil Pressure Switch for Aurora

Standard Ignition PS-278 is an engine oil pressure switch built for accurate oil pressure signal reading in the engine. It uses a female connector, male blade terminals, and a 4-terminal layout for the specified application. This PS-278 oil pressure switch is a direct-fit service part for select Oldsmobile Aurora models with oil pressure gauges.

Key Features

• Engine oil pressure switch for oil pressure monitoring circuits
• Female connector with male blade terminals
• 4-terminal design for the listed application
• Laser-etched calibration process for precise circuit setup
• High-temperature polyimide diaphragm construction for durability
• Built to withstand rapid pressure pulsations and demanding engine conditions

Detailed Description

Standard Ignition PS-278 is engineered for reliable oil pressure signal control in the engine switch circuit. The calibrated thick-film printed circuit helps deliver accurate pressure reading, while the polyimide diaphragm construction supports resistance to rupture and oil leakage under heat and cycling. This part number is used in select 1995-1999 Oldsmobile Aurora applications, including 1996-1999 Oldsmobile Aurora models equipped with oil pressure gauges. If you are searching for an Oldsmobile Aurora oil pressure switch or a PS-278 replacement, this part matches the listed connector and terminal configuration.

This part cross-references Dayco 80006 for the same application.

What It Helps Solve

• Oil pressure gauge signal issues
• Intermittent or inaccurate oil pressure readings
• Switch failure caused by heat and pressure cycling
• Oil leakage at the pressure switch location
• Electrical connection problems at the switch terminal interface

Installation Notes and Tips

Verify the connector style, terminal count, and blade terminal layout before installation. Confirm the vehicle is a 1995-1999 Oldsmobile Aurora, and for 1996-1999 models, confirm the engine uses oil pressure gauges. Inspect the harness connector and sealing surface before replacing the switch, and compare the removed part to PS-278 to confirm the application.

Quality Assurance

Standard Ignition states that each unit is tested with automated equipment to verify switch activation, leak resistance, and specification compliance. The design uses high-grade materials and is built for service use in demanding operating conditions.