The Triumph TR4 represents a significant evolution in the celebrated Triumph Roadster series, produced between 1961 and 1967. Styled by Giovanni Michelotti, this classic British sports car offered a more modern and European aesthetic compared to its predecessors, making it a popular choice for enthusiasts seeking distinctive styling and engaging performance. Powered by a 2138cc inline 4-cylinder engine producing 105 bhp, the TR4 was equipped with a 4-speed manual transmission, with an optional Laycock de Normanville J-Type Overdrive enhancing its driving versatility. Its robust engineering, characterized by a body-on-frame construction and a focus on driving pleasure, positioned it as a key competitor in the sports car market of its era.

This comprehensive Parts Catalog/Parts Manual is designed to assist owners and technicians in the identification and sourcing of all factory-specified parts for the Triumph TR4 and TR4A models, covering chassis codes CT1/1L to CT53918L (TR4) and CT53919L onwards (TR4A). It provides detailed exploded diagrams and part number cross-referencing for major assemblies including the engine, transmission, drivetrain, suspension, steering, brakes, electrical system, fuel system, cooling system, exhaust system, body panels, and interior trim. While not a repair manual, this English-language document is invaluable for ensuring the correct parts are selected for restoration, maintenance, and repair, thereby facilitating efficient and accurate component replacement.