Item description from the seller

Porsche 911 930 Late Carrera Style Radiator Type Front Oil Cooler 

This listing is for a high quality reproduction Carrera style radiator type auxiliary front oil cooler for 911, 930 at a fraction of the factory original cost. 
Exact replacement for your 84-89 type cooler with provisions for mounting the cooler fan, sensor switch and gravel guard. Also great
for updating your early 78-83 911 inefficient Trombone cool.