New reproduction, replaces GM part # 1259890
This unit screws into the passenger side of the engine block.
This units holds the oil sending unit & the Turbo oil feed line attaches to the end.
The shape is more of a stream line in order to make it easy to remove & install.
The factory blocks have long been discontinued. Oil holes are slightly larger then factory.
All threads are the same.
This unit is great for replacing a broken factory unit or just installing when doing a rebuild.