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AQ125a heat exchanger cap

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  • AQ125a heat exchanger cap

    Hey all, First post long time reader of the forum
    I am looking for a heat exchanger cap for my late 70's penta aq125a.
    There is a second hand one on ebay for $100 cad but that's way too much.
    The part number is 834576. Is there an alternative cap that I can buy to use or is there somewhere cheaper to purchase one?

    Thanks
    Jeff

  • #2
    you could try a standard 15 psi radiator cap
    Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

    1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

    Past Boats
    1970 Wooster Hellion - Merc 9.8
    2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
    1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

    What’s behind you doesn’t matter.Enzo Ferrari

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    • #3
      It's slightly larger and flatter than a standard rad cap
      https://www.ebay.com/itm/Volvo-83457...-/223113384451

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      • #4
        oh sorry its a aq140a not sure there's much difference anyway

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        • #5
          there are actually about 6 radiator cap sizes that are considered "standard" per SAE J164

          look at an SAE large radiator cap without venting. that would be 68mm, not the medium (56mm) or small (43mm)
          Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

          1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

          Past Boats
          1970 Wooster Hellion - Merc 9.8
          2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
          1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

          What’s behind you doesn’t matter.Enzo Ferrari

          Comment


          • #6
            Sign up today
            If anyone is following this, I email my local volvo penta dealer and could get a replacement for $191 so I went to my local radiator shop and got one that fit for $25 73mm blank i think it was

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