Mokka / Mokka X (2013-19). Zafira C (2012-21). Original Vauxhall (OEM) . Vauxhall / Opel. Oil Pump Pressure Valve. This will fit the following vehicles:-. Astra K (2016->). 1.6 CDTi - B16DTC, B16DTE, B16DTH, B16DTL, B16DTN - From 2015-> Onwards Only.