This PULSAR Stainless Steel Oil Restrictor is a precision-machined fitting that meters oil flow into a ball bearing turbocharger's center housing, protecting the bearing system from excess oil pressure while ensuring adequate lubrication. It features a -4AN connection on the oil line side and a 7/16-24 UNF thread into the bearing housing, with a calibrated 1.0mm orifice sized specifically for ball bearing cartridges; it is not intended for journal bearing turbos.

Fitment: Universal oil feed restrictor for ball bearing turbochargers with 7/16-24 UNF oil feed ports, including PT/X28/30/35 and PTG25/30/35 series turbos.