Posted July 8, 20204 yr comment_602333 I couldn’t find this via a search so I thought I would share my findings the thread size for the fitting that leaves the turbo oil t-block (originally hardline to the turbo) is: m12x1.0 I used a m12x1.0 to -4an adapter and works perfect for my turbo oil feed line. cheers! Link to comment https://www.classiczcars.com/forums/topic/64236-l28et-oil-line-fitting-thread-size/ Share on other sites More sharing options...
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