Weld On Sump Extension to suit RB26 GTR (R32 R33 R34)Designed off the original Gibson Motorsport winning GT R's, the Hi Octane Racing sump extension is a must have for your GT R! Features: Increases sump capacity to 8. 5 9L 3 swinging gates for superior oil control Provision for oil return fitting For many years the oiling system has been the Achilles heel of the RB26 engine causing many catastrophic engine failures often the first time the vehicle ventures anywhere near a racetrack. The standard RB26