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GM # 1259890 BRASS Turbo Drain Line TUBE ADAPTER FITTING. NEW FACTORY 1/2" NPT BRASS FITTING THAT SCREWS INTO THE front of your 109 Turbo BLOCK. This allows the factory drain line TUBE to flow into your engine Block. GM PART Number # 1259890. This part is often sent out when the Block is going to the machine shop but rarely returns.
