We have 2 versions of these High quailty oil cooler ducts. The duct is made for either 19 row or 25 row 235matrix oil coolers. The inlet for these ducts has a 70mm O.D
Duct to suit 19 row Oil Cooler has a single 70mm Inlet
Duct to Suit 25 row Oil Cooler has a Twin 70mm Inlet