Fit to: Fits for Manual Transmission Models ONLY 1975 1976 1977 1978 1979 Triumph TR7 2.0L l4 GAS Item Details CoreSize:20.59"x15.75"x2.20" Overall Size : 25.3" x 17.3" Inlet Diameter: 1.34'' Outlet Diameter: 1.34'' ROW NO: 3Row Warranty: 1 Year 100% TIG welded.