The JRspec cast iron collector is designed for the 1.8T engine with a K03 turbo flange, compatible with VW Golf, Jetta, New Beetle, Seat Leon, and Audi A3/TT models. Constructed from high-quality cast iron, these collectors feature enlarged channels to enhance exhaust gas flow. They are annealed to prevent cracking, ensuring durability. The collector flanges are pre-arranged for straightforward installation.

Please note, the exhaust manifold requires longer mounting pins, which are not included in the set.