This insert replaces the denso donut o-ring and stock diffusers to give a confident seal and install for Injector Dynamics and other fuel injectors with our replacement fuel rails.
Includes two o-ringed sleeves and four injector o-rings.
Fitment: 13BT Primary and Secondary with EV14 Injectors and FFE Rails.
Anodized 6061-T6 Aluminum with Viton O-rings.
These are included with all Turbo 2 rail / injector combos purchased from FFE.