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What 555 injectors are these??

Hi guys, can anyone tell me what injectors these are?

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I think I got them off John Dixon in 2010

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    They're an odd colour. Pink are standard Maxima injectors, buy these look more "orangey".

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    I think they might be old JECS 555cc injectors and were probably yellow when new, but have oranged with heat.

    Maybe an older version of these...

    https://conceptzperformance.com/Cart/description.php?II=682

    Why don't you remove one of the injectors securing caps to reveal the full view of the top. You don't have to disturb the seals and I wonder if the brand is etched out of sight under the cap.

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    They're definitely not the ones from CZP, these have a square Bosch EV1 connector. I don't recall any yellow-coloured square connector sidefeed injectors, either.

     

    Have you asked John about them? Or searched for the original For Sale ad if they werre bought via the forum.

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