Siemens injector for 4cyl, Mk2/3 VR6, and Mk4 24v VR6 engines. Wide-angle single cone, good response and helpful atomization at injector nozzle and finer upon impact with intake valves. Fuel rail spacers required for 1.8T (non-AEB/AGU). Also available in custom R32-specific version. These injectors are popular due to low price and wide-acceptance among software tuners. Technologically speaking, they are decent but not exceptional performers. Parts are priced each.