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1990 325

  • 18-03-2020 7:18pm
    Registered Users Posts: 39

    I’ve just bought a new original Bmw air intake & it has an extra air outlet on it ..does anyone know what this is ? It’s not on my 90 325i.


  • Registered Users Posts: 4,932 ✭✭✭Bigus

    Looks like vacuum for the brake servo , can be blocked off.

  • Registered Users Posts: 2,204 ✭✭✭kdevitt

    There are two different versions - you could probably block it off, or buy the correct one. They're not expensive.


    "New boot is for a late 325i, where the complicated plumbing for the brake servo was simplified back to a single connection to the throttle body, a simple non return vacuum valve fitted, and the servo turned upside down to shorten the pipe run, similar to what is fitted to M40 engined E30s and all later BMW petrol models."

  • Registered Users Posts: 39 andrew1300r

    Thanks for that.
    I just blocked it off .
    Yeah only paid €51 from Bolands Waterford for it.
    My brake servo just has a small vacuum pipe from it.