PCM R020015A Pro-Tec oil pressure switch. The switch goes to the ground to tell the Pro-Tech to put the engine into a limp mode. Equipped on most GT40 and most PCM EFI engines to activate a warning light or buzzer if the engine has low oil pressure.

Product Specs:

• Sensor body measures 1-7/8″ long
• Threaded end measures 3/8″
• Switch normally open
• Used on 89-94 PCM engines and the GT40

Bakes Resource Library:

PCM Oil Pressure Switch Service Bulletin (PDF)