General description 16x PCS Exhaust Valves designed for various Audi, Skoda, and VW models, ensuring optimal performance for your vehicle's engine. These valves are compatible with multiple engine codes and are made from high-quality materials for durability and reliability. Technical specifications Length: 100.5 mm Valve stem diameter: 6 mm Valve disc diameter: 26 mm Material: bimetal Valve disc material: chrome-manganese-nickel steel Valve stem material: chrome silicon steel Alternative Length: 100.9 mm Alternative Valve disc diameter: 29.5 mm Compatibility and accessories Compatible with Audi A1, A2, A3 Compatible with Skoda Fabia, Octavia, Roomster, Superb Compatible with VW Beetle, Golf, Jetta, Passat, CC, Polo, Scirocco, Touran OEM/Part Numbers: 036.109.601AD, 036.109.601AK, 036.109.601AL, 036.109.601S, 03C.109.601J, 036.109.611K Compatible engines: 1.4 16V, 1.6 FSi 16V, 1.2i 12V, 1.4 FSi 16V, 1.4i 16V, 1.2 HTP 12V Engine codes: AUA, BBY, BAD, BAG, BLF, BLP, AZQ, BME, APE, AUB,