Fits: Ford Sierra Escort Cosworth Part Code: GGR1499
3 Bar Map sensor is required on higher powered Cosworth engine conversions when using motorsport high flow fuel injectors.
Replacement for Weber Marelli 3 Bar map sensor for Cosworth.
3 Bar Map Sensor (Manifold Absolute Pressure) senses the boost pressure in the inlet manifold on your Cosworth engine; this is converted into a voltage signal & sent to the engine management system.
The management system compares this signal to what it has programmed into its chip, calculates the boost pressure, and sets the fuelling & ignition accordingly.
For Sierra Cosworth YB red and green top engines, Escort Cosworth YBT T35 big turbo blue top enginewith Weber Marelli engine management system.