14mm Top Feed Injector Adaptors for Nissan RB25

Set of six adaptors to fit 14mm top feed injectors to RB25DE and RB25DET intake manifolds. Sealed with a Viton o-ring, with a 14mm bore to suit aftermarket 14mm top feed injectors.

Replacing the standard side-feed injectors with aftermarket top-feed injectors is common practice, as top-feed injectors come in a wider range of flow rates and are considerably cheaper.

CNC machined from billet 6061 aluminium at our Napier, NZ factory and black anodised for corrosion resistance.

An aftermarket top-feed fuel rail is required. The adaptors replace the flat, round factory injector lower seal and fit directly into the 25.6mm bore on the RB25 intake manifold. Note that some aftermarket intake manifolds are machined to a different size and can have a sharp edge that makes the o-rings tight and harder to install — we recommend checking the bore size and hand-chamfering the top edge of the injector seal port before installation to avoid damaging the o-rings.

Sold in sets of 6.