# AN fitting sizes for the engine block?

**URL:** <https://forums.speedlife.net/t/an-fitting-sizes-for-the-engine-block/210223>\
**Category:** SON240sx Automotive\
**Created:** [March 18, 2011, 6:47pm UTC](https://forums.speedlife.net/t/an-fitting-sizes-for-the-engine-block/210223 "2011-03-18T18:47:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![240sex](https://avatars.discourse-cdn.com/v4/letter/2/22d042/32.png) [@240sex](https://forums.speedlife.net/u/240sex)\
**Post date:** [March 18, 2011, 6:47pm UTC](https://forums.speedlife.net/t/an-fitting-sizes-for-the-engine-block/210223/1 "2011-03-18T18:47:39Z")

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my turbo setup didn’t come with the adapter fittings for the block. i know the coolant feed is -6 AN M14x1.5mm. what i’m not sure about is the oil feed, aside from it being -4 AN. so is it -4 AN M12x1.25mm OR -4 AN M10x1.25mm?

quick help would be GREATLY appreciated. thanks.

- jesse