Outlet Diameter: 1 1/8. Inlet Diameter: 1 1/8. Placement on Vehicle: Front, Engine Compartment. TOC: Concentric; 3/4 In. Diameter;12 13/16 In. Mounting Hardware Included: No. Fitment Type: Direct Replacement. Item Length: 28 7/16. Features: 100% Leak Tested, Durability Tested. Interchange Part Number: HO3010221, 19010RB1J51. Item Height: 13 3/4. OE/OEM Part Number: HO3010221, 19010RB1J51.