Lower nozzle adaptors for Bosch EV 14 fuel injectors are precision-machined components made from lightweight, corrosion-resistant aluminium.

They serve two key purposes: aligning the injector’s spray pattern with the intake port for optimal combustion, and ensuring correct physical fitment across a wide range of intake manifold designs.

This makes them especially valuable in performance and custom engine builds where injector compatibility is critical.

Common in the tuning and motorsport scenes, these adaptors help maintain consistent fuel delivery, improve throttle response, and support reliable engine operation under demanding conditions.