Standard Ignition PS661 Engine Oil Pressure Switch

Engine Oil Pressure Switch for Mazda and Porsche

Standard Ignition PS661 is an engine oil pressure switch with a blade terminal design and 4-terminal configuration. It is used in applications that rely on oil pressure signal input for the gauge or warning system, including select Mazda 3, Mazda 6, CX-3, CX-30, CX-5, CX-9, and Porsche 918 Spyder models.

Key Features

• Engine oil pressure switch for oil pressure monitoring circuits
• Blade terminal type for straightforward electrical connection
• 4-terminal design
• Standard Ignition PS661 replacement part
• Cross-references OE-style part numbers such as OP7656 and S4656 for the same application

Fitment Details

• Fits 2019-2021 Mazda 3, N/A
• Fits 2021 Mazda 6, N/A
• Fits 2019-2021 Mazda CX-3, N/A
• Fits 2020-2021 Mazda CX-30, N/A
• Fits 2018-2021 Mazda CX-5, N/A
• Fits 2021 Mazda CX-9, N/A
• Fits 2018-2020 Mazda 6, N/A
• Fits 2016-2020 Mazda CX-9, N/A
• Fits 2015 Porsche 918 Spyder, N/A

What It Is Used For

• Restoring oil pressure warning light operation
• Correcting inaccurate or intermittent oil pressure gauge readings
• Replacing a failed switch that triggers oil pressure fault indications
• Addressing electrical connection issues at the oil pressure circuit
• Supporting proper engine oil pressure signal reporting in the instrument system

Installation Notes and Tips

Verify the connector style and terminal count before installation. Confirm the vehicle application by year, make, and model, since PS661 is listed for multiple Mazda platforms and the Porsche 918 Spyder. Inspect the harness connector and surrounding oil pressure circuit for corrosion, damaged terminals, or oil contamination before installing the new switch.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical and engine management components. PS661 is listed as a direct replacement-style engine oil pressure switch for the confirmed applications above.