68 sending units question

Early C Bodies - The Slab Side Years

  1. Mike McGuire

    Mike McGuire Member

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    Hello Fellow Mopar enthusiasts.

    I'm curious if anyone knows if a 68 Chrysler 300 fuel tank sending unit, is the same or will fit in my 68 chrysler newport (originally 383). I suspect 5/16 vs 3/8, and the answer is no, but thought to ask the collective first.

    Also correct part number if handy.

    Many thanks.
    Mike
     
  2. Fratzog

    Fratzog Old Man with a Hat

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    I don't know but would be very surprised if they did not interchange. I'm sure others here will know.
     
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  3. Pete Kaczmarski

    Pete Kaczmarski Senior Member

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    Did you Check Van's Auto listing? I just got one the other day for my '70 Plymouth Fury.
     
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  4. live4theking

    live4theking Old Man with a Hat

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    I'm fairly sure that they are the same. Checking Vans Auto will confirm that.
     
  5. HWYCRZR

    HWYCRZR Senior Member FCBO Gold Member

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    ‘68 Dodge, Chrysler, Plymouth C-bodies are all the same except wagons. 2809031 for all C’s except wagons.
    Yes it is called fuel tank gauge in the parts book. It is the sending unit.
    A parts book is a valuable asset and can be downloaded for free at my Mopar.com

    image.jpg
     
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  6. Love Shack

    Love Shack Active Member

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    If you change out a fuel tank sending unit, re-use the original lock ring if at all possible. With the reproduction lock ring, mine leaked like crazy. Had the original bead blasted and powder coated, installed it, and no more leak.
    Not sure that the reproduction sending units are very accurate, but better than nothing.
     
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  7. HWYCRZR

    HWYCRZR Senior Member FCBO Gold Member

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    The the lock ring depends on the tank. The ring I got with the tank from Vans fit the tank it came with better than my original. Compare the fit between the two before replacing.
    As far as the rubber gasket, the key is making sure it is perfectly centered and that the lock ring is perfectly centered. If your lock ring is not perfectly centered when locked, the tank will leak regardless the thickness of your gasket. Much easier to install and center with the tank out if you have the opportunity. Then you can check the seal before you get a full tank of gas leaking out.
     
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  8. John Kirby

    John Kirby Member

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    If you replace the tank, most are bare steel and will rust in no time. paint it with a good automotive epoxy primer, black paint and clear coat it. I used an acrylic enamel and gas spills ate right through it. Clear coat is impervious to it. That's why the paint on your car doesn't wash off if you get gas on it.
     
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