Oil Block Adapter Specification This oil block replaces the stock SR20DE(T) oil housing mounting directly to the block adding two Dash 10 fittings for oil lines and two 1/8 NPT ports for senders/sensors. Benefits of using the block are twofold : The stock item is a major source of weakness often failing and causing catastrophic engine damage due to oil loss. This block removes the need for a sandwich plate again another weakness within a lubrication circuit. A sound investment to protect your SR20DE(T) whilst adding functionality!