The Injector Dynamics 1750-XDS 1750cc injector set (8-pack) is a 48mm-length option with a 14mm top and 15mm lower O-ring as detailed. Sold as eight injectors to match eight-cylinder applications, the item description supplies the length and distinct lower O-ring size so buyers can confirm compatibility with fuel rails and intake ports that require a 15mm lower sealing interface.
Injector Dynamics 1750-XDS - 48mm Length - 14mm Top - 15mm Lower O-Ring (Set of 8)