OPL HPR177 Aluminum Radiator For BMW 320i, 323i, 325i, 330i, Z4 (Manual Transmissions) Fits: Select BMW models (click "See more product details") Inlet: 1.5" / Outlet: 1.5" / Rows: 2 Core Size: 15.75" x 22.75" x 1.5" / Overall Size: 17.25" x 27.5" 4.5" All aluminum alloy construction assembled using 100% precision TIG welds 10 year manufacturer warranty