The part numbers R (Renault/Dacia OEM) and (Bosch) identify a Manifold Absolute Pressure (MAP) / Boost Pressure Sensor. This sensor reads air pressure levels inside the intake manifold to help the engine control unit (ECU) regulate fuel injection and turbocharger boost... Technical SpecificationsManufacturer: BoschNumber of Pins: 4-pin electrical connectorOperating Pressure Range: 0.5 to 3.00 barCommon Engine Compatibility: Renault/Nissan 1.5 dCi and 1.6 dCi diesel engines