OEM Oil Sump Pickup Tube Gasket fits a large variety of Nissan engines used in USDM and JDM cars, more notably the Nissan RB series.

This o-ring is located between the oil pickup tube and the engine, often required whenever servicing the rotating assembly.

Note: This O-ring is generally only found on early RB motors. Later RB motors utilize a metal type gasket found HERE.