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Speedo sender/impulse generator

Discussion in '308/328' started by Brian Harper, Jul 22, 2009.

  1. Brian Harper

    Brian Harper F1 Rookie
    Owner

    Feb 17, 2006
    3,868
    San Jose area
    Full Name:
    Brian Harper
    #1 Brian Harper, Jul 22, 2009
    Last edited by a moderator: Sep 7, 2017
    My speedo is dead and I'm pretty sure it is my sender. I have a funnel shaped sender on my '75 308GT4. My parts book says part number 106324. The usual suspects for parts all list a superceded part number 124146. I'm just a little concerned because there are threads here that mention that getting the wrong sender can show double speed, and it looks like the new part number perhaps has its impeller offset from the input allowing for some gearing, where my sender has no gearing, it is is striaght through. Has anyone put 124146 on an early-ish car?
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  3. gerritv

    gerritv Formula 3

    Jun 18, 2001
    1,400
    St Catharines
    Full Name:
    Gerrit
    Hi Brian
    That is the correct replacement for the original sender.
    Gerrit
     
  4. Brian Harper

    Brian Harper F1 Rookie
    Owner

    Feb 17, 2006
    3,868
    San Jose area
    Full Name:
    Brian Harper
    Cool, thanks! I'll order one tonight.
    I became fairly confident last night as I cruised all the parts sites and they all went to this part. If just one supplier moved to this part it might be a mistake, but it looks like everyone has. That's a good sign.
     
  5. bert308

    bert308 Formula 3
    Silver Subscribed

    Nov 30, 2002
    1,776
    Roermond Netherlands
    Full Name:
    Bert Kanters
    +1

    I replaced the one in the first pic with the one in the second pic (from Superformance) and the speedo came back to life, '80 GTSi.
     
  6. Paul308GTSi

    Paul308GTSi Formula Junior

    Oct 26, 2008
    992
    Queensland Australia
    Full Name:
    Paul D
    The double reading is due to QV gearbox with a totally different sender being fitted to a 2V car. As Gerritv and other said , you have the correct sender.
     
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  8. armando_sf

    armando_sf Rookie

    Jun 9, 2008
    33
    San Francisco
    Full Name:
    Armando Levy
    +2 on a '75 GT4

     
  9. Brian24

    Brian24 Rookie

    Jan 15, 2009
    27
    It may be of some interest that when the speedo sender of my 74 GT4 started playing up I got a similar unit from a Fiat dismantler that was from a Fiat Croma (old style). It looked the same as the one in the 2nd photo. Its been running perfectly for 12 years now.

    Markings were:

    Original: 68 1041 4B 12V 4 IMP/G

    Replacement: 68 1025 9B 12V 4 IMP/G
     

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