NORTHERN RADIATOR – 06-10 GM P/U 6.6L Transmission Oil Cooler NRAZ18062 Fluid Cooler – Extreme Heavy Duty – 23 x 4.5 x 2.75 in – Fin Type – 10 AN Female O-Ring Inlet / Outlet – Hardware – Aluminum – Natural – Automatic Transmission – Duramax 2006-10 – Kit