The LOJ Conversions Oil Pressure Sender Adapter will allow you to use your OEM 350Z Oil Pressure Sender or G35 Oil Pressure Warning Lamp Switch with any Gen III/IV Small Block Engine. The adapter is threaded properly for compatibility with both the GM sender location and the Nissan Oil Pressure Sender. This allows you to retain the function of the stock gauge / lamp when using LOJ's engine harness as well as the GM sender for data-logging with HP Tuners. Sealing washer and jam nut allows it to be installed at any angle. Keep your OEM Pressure Gauge functional!