Turbosmart BOV Flange Adapter Kit The easiest and by far the safest way of fitting a Multi-Fit BOV to your vehicle is with a Model-Specific Adapter Kit. Designed to fit the factory engine with minimum fuss and technical knowledge. Each Model-Specific Adapter Kit comes with all the necessary hardware as well as an extensive pictorial fitting guide. Most kits can be fitted in under an hour with no specialised tools, custom fabrication or welding. Because all the parts come from Turbosmart you can be assured of accurate fit and performance of the system.