Oil restrictor with 1mm bore for Garrett GT28 / GT30 / GT35R turbines. Material: Copper alloy Lead thread: AN4 OEM number: 1600-111-104 (414-14201-011) Oil restrictor with 1mm bore for Garrett GT28 / GT30 / GT35R turbines. Material: Copper alloy Lead thread: AN4 OEM No: 1600-111-104 (414-14201-011)