Description:Direct replacement of your old injector and no modification needed.Specification: O-Rings Included: Yes, preinstalled Orifice Type: 4 holes disc Material: Metal, Plastic Flow Rate: 28.7lb/hr Connector Type: EV1 OE Number: 0280156061, 06A906031BA,06A-906-031-BA; 06A906031BM; 6A906031BA Pin Number: 2 Dimension: 6.1x3.1x2cm / 2.40"x1.22"x0.79"(L*W*H) Flow rates at 43.5 psi / 3 bar28.7 lb per hour217 G per min.(N-Heptane)301.8 cc per min Note: This installation should be done by an experienced mechanic who has access to a factory service manual and all required tools! Please check the fitment section of this listing before you bid. Please kindly check again your engine volume! This is a non-OEM product, accessory only! Fitment: for Volkswagen Jetta 1.8L 2001-2005 for Volkswagen Beetle 1.8L 2002-2004 for Volkswagen Golf 1.8L 2002-2006 for Audi TT Quattro 1.8L 2000-2002 for Audi TT 1.8L 2000-2006 Package Included:1 x Fuel InjectorInstallation: Step 1: Make sure the engine is cool down. Disconnect the battery. Step 2: Remove the bolts and brackets from the fuel rail. Step 3: Disconnect the plug on each injector. Step 4: Lift the fuel rail and remove the injector from the fuel rail. Step 5: Press the new injector into the rail. Reattach the fuel rail and put the injectors in their respective holes. Step 6: Bolt down fuel rail. Reattach fuel line. Plug in injector connectors. Reconnect battery. Step 7: Double check for fuel leaks before and after starting the engine.