Billet Performance Products 11mm 3/4 to Full Length Fuel Injector Adapter converts compatible Bosch EV14 3/4-length injectors into a full-length configuration for EFI setups that need an 11mm style adapter.It is a useful fuel system part when you are trying to make aftermarket injectors, rails and manifolds work together without compromising injector seating. On custom EFI builds, an adapter like this can tidy up injector height, reduce installation headaches and help keep the rail setup secure and leak-free.This suits workshop fuel system upgrades, engine conversions and custom manifold or rail combinations where injector length and top fitment need to be corrected at the same time.Features Function: Converts 3/4-length injectors to full length Injector fitment: 11mm style adapter Injector compatibility: Bosch EV14 550cc, 725cc and 1000cc 3/4-length injectors Finish: Black anodised Included: Injector clip for secure, leak-free assembly Use area: EFI fuel rail and manifold injector height correction Supplied as: Single adapter Typical Applications Custom EFI fuel system upgrades requiring 11mm fitment Using Bosch EV14 injectors in rails designed for full-length injectors Engine conversions with mixed injector and rail hardware Street, drag and track builds using aftermarket EFI hardware Workshop fuel system assembly and service Fitment Notes Designed around 11mm injector fitment and compatible 3/4-length Bosch EV14 injectors Always confirm injector body length, O-ring sizing and rail/manifold dimensions before ordering This adapter changes injector height, not injector flow rate or electrical compatibility Best suited to custom EFI setups where both injector top fitment and installed length matter