The Triumph Tr3/4 Girling Brake Cylinders 304170 is a vintage part designed for Triumph vehicles. This brake wheel cylinder, with the OE/OEM part number 304170, is a specific and genuine component that was used on Triumph cars. It is a high-quality product that ensures proper brake function and performance, making it an essential part for classic Triumph enthusiasts looking to maintain the authenticity and functionality of their vehicles.