Quantity: Two (2)

Type: Aluminum Shim & Steel Allen Bolt

Fuel rail shim kit for Honda K20 and K24 intake manifolds. The first option will enable the use of tall 60mm fuel injectors with OEM and most aftermarket K20-style fuel rails. The second option will enable the use of tall 60mm fuel injectors with OEM Honda F22B and F23 extruded-style fuel rails (redrilled and rotated 180 degrees). This will greatly expand the options for K-series and K2H adapter owners.

Option #1: The K20 returnless fuel rail kit will work best with Bosch EV14 injectors such as those sold on InjectorNation.com, but will work with other injectors using 14mm upper and lower o-rings spaced 60mm apart including most Denso and Siemens Deka models. Once converted and the shim are installed (under existing OEM phenolic shims), the fuel rail will install & work the same as stock, and most modern injectors will work with the OEM retainer clips. Note: the plastic injector cover may interfere with parts of the fuel rail. K-series style fuel rails require the OEM studs removed and replaced with M8 bolts (included), or the user can install M8x40 studs which are also used to hold the throttle body on.

Requirements: K-series intake manifold compatible with OEM fuel rail, OEM phenolic shims, K-series fuel rail compatible with OEM injectors

Option #2: K2H adapter owners can save big with this kit since you can use OEM Honda parts instead of buying an aftermarket return-style fuel rail. Simply drill two 8mm holes into the extruded-aluminum F-series fuel rail (not compatible with cast-aluminum H-series or F22A fuel rails), install the the OEM & Injector Nation shims, then tighten the bolts. Any tall 60mm injector designed for a Honda B/D/F/H with a 14mm lower o-ring will work, including InjectorNation.com Bosch EV14 fuel injectors. Does not require the OEM phenolic shims. Note: the plastic injector cover may interfere with parts of the fuel rail.

Requirements: K-series intake manifold compatible with OEM fuel rail & shims, redrilled F-series OEM fuel rail (extruded-style: F22B, F23A, H23A-vtec, F20B, Euro-R), aftermarket injectors with 14mm O.D. lower o-rings (newer Bosch, Siemens, Denso, etc); contact us if your manifold DID NOT use OEM shims