4 sets equal 16 pieces per bag.This repair kit is designed for fuel injectors compatible with specific vehicle models equipped with 1.8 16V A/B engines.Each connector is tested at the factory to ensure functionality.The kits can be produced based on provided samples or technical drawings, including the creation of molds and fixtures if required.Samples may be available upon request if parts are in stock, with the requester responsible for associated costs.All items undergo testing prior to shipment.Packaging is typically done in neutral white boxes and brown cartons, but branded packaging can be arranged upon authorization.