Proflow's head oil drain fitting kit is designed to reduce excessive oil build up on the drag strip, drift track and on the street. The cylinder head fitting in this kit helps drain the oil back to the sump instead of building up in the head where it often ends up being forced out of tappet cover breathers and into catch cans. It seals with an o-ring in the head and features a compact -08AN O-Ring port and slotted holes to allow you to change the angle and position of the fitting depending on clearances around the gearbox on different RB engines. To fit the oil drain fitting, the frost-plug at the rear of the head is removed and two M6 holes are required to be tapped into the rear of the head (drawing below). Suitable for all Nissan RB20DE, RB20DET, RB25DE, RB25DET, RB26DETT, and RB30DET engines. This kit includes: 1x Head Oil Drain Fitting and M6 Screws 1x 45 Degree full flow -10AN hose end for the head 1x 90 Degree full flow -10AN Hose end for the sump 1x -08AN O-Ring port to -10AN straight fitting 1x -10AN Aluminium Weld on Bung for the sump 1x Stainless Braided Rubber Hose -10AN
Cylinder Head Oil Drain Fitting Kit, Billet Aluminium, Anodized Black, -10AN, RB For Nissan, Holden Commodore  Diagram Image