TurboWorks intercoolers feature excellent air flow. We guarantee very good durability and great cooling. Perfectly replace serial intercoolers, increasing the car's performance. Our intercoolers, as one of the few, have been tested above 10 bar. Fits: VW Golf IV VW Bora Audi A3 VW Jetta Engines: 1.8t 1.9tdi Outer diameter of the inlets: 2.25 "(57mm) It has an inlet for MAP sensor Core dimensions: 185x210x130mm TurboWorks intercoolers have an efficient COOL-TEC + core, walls made of the highest quality polished aluminum Other cores have less frequently arranged ribs, which results in poor cooling, while COOL-TEC + cores are made of more densely arranged ribs, which guarantees a significant improvement The picture below shows how the new COOL-TEC + core is built. TurboWorks intercoolers are characterized by excellent air flow. We guarantee very good durability and excellent cooling. They perfectly replace serial intercoolers, increasing the car's performance. Our intercoolers, as one of the few, have been tested over 10 bars. Fits: VW Golf IV VW Bora Audi A3 VW Jetta Engines: 1.8t 1.9tdi TurboWorks intercoolers have an efficient COOL-TEC + core, walls made of the highest quality polished aluminum, other cores have less frequently arranged ribs, which results in poor cooling, while the COOL-TEC + cores are made of more densely arranged ribs which guarantees a significant improvement in cooling. In the photo below you can see how the new COOL-TEC + core is built. Outer diameter of the inputs: 2.25 "(57mm) It has an input for a MAP sensor. Core dimensions: 185x210x130mm