GM-style 3 bar MAP sensor. This sensor is used to determine engine load on forced induction engines. This sensor is intended to be used on engines producing positive manifold pressure up to 2 bar, or roughly 30psi of boost. This sensor is not recommended for use with engines that will not see boost above 1 bar, as it limits sensor resolution. For engines up to but not exceeding 1 bar boost, use the 2 bar MAP sensor (PN 300-71120). Sensor features vacuum port, mounting tabs and necessary connector, pins and seals for terminating harness.