This Bosch 4 BAR T-MAP Sensor allows the JB4 to read and control boost levels up to 43psi. Includes a plug and play N54 adapter, two size orings, and 8-32 5/8" length mounting bolt appropriate for BMS & CPE chargepipes. For other chargepipe brands you may need to source your own 5/8" length bolt at a hardware store.