Mercury Model and Year ID

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Viewing 6 posts - 11 through 16 (of 16 total)
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  • November 18, 2015 at 1:30 am #27270
    Buccaneer
    Participant

      US Member

      Thanks Steve, good to know!

      Prepare to be boarded!

      November 18, 2015 at 11:02 am #27291
      billw
      Participant

        US Member

        While it is sure worth a try, swapping shafts around on old Mercurys can be very frustrating. You will likely find many very subtle differences….number of splines, a 1/4" difference in length, key type for the impeller, etc. I think it is possible in some cases, but not as a rule.

        Long live American manufacturing!

        November 18, 2015 at 1:31 pm #27300
        20mercman
        Participant

          The easiest way to verify if a newer part will fit is to cruise through the parts lists and see if a new number has superseded the old one. In the case of the 20hp motors that I posted about, the new part number.

          45-39375This part has been superseded. DRIVE SHAFT O – Replaced by 45-53638A 1
          (more info) UnavailableUnavailable Parts

          DRIVE SHAFT ASSY O – Replaced by 45-56793A 1
          45-53638A 1This part has been superseded. DRIVE SHAFT ASSY O – Replaced by 45-56793A 1
          (more info) UnavailableUnavailable Parts

          DRIVE SHAFT ASSY O – Replaced by 45-64430A 1
          45-56793A 1This part has been superseded. DRIVE SHAFT ASSY O – Replaced by 45-64430A 1
          (more info) UnavailableUnavailable Parts

          DRIVE SHAFT ASSY O – Replaced by 45-74852A 1
          45-64430A 1This part has been superseded. DRIVE SHAFT ASSY O – Replaced by 45-74852A 1
          (more info) UnavailableUnavailable Parts

          DRIVE SHAFT ASSY O – Replaced by 45-75035A 1
          45-74852A 1This part has been superseded. DRIVE SHAFT ASSY O – Replaced by 45-75035A 1
          (more info) UnavailableUnavailable Parts

          DRIVE SHAFT ASSY O – Replaced by 45-93301A 1
          45-75035A 1This part has been superseded. DRIVE SHAFT ASSY O – Replaced by 45-93301A 1
          (more info) UnavailableUnavailable Parts

          DRIVE SHAFT O NLA
          45-93301A 1 DRIVE SHAFT O NLA
          (more info) UnavailableUnavailable Parts

          Steve

          November 18, 2015 at 1:34 pm #27301
          20mercman
          Participant

            Here is a quick look up from a 110/9.8 hp motor.

            45-64257 DRIVE SHAFT (SHORT SHAFT) (1 required per assembly)
            UNITED STATES 3795658 THRU 4126459 AUSTRALIA 8015040 THRU 8028439 BELGIUM 9041439 THRU 9078138 CANADA 7027323 THRU 7049107

            DRIVE SHAFT O – Replaced by 45-75034A 1
            45-64257This part has been superseded. DRIVE SHAFT O – Replaced by 45-75034A 1
            (more info) UnavailableUnavailable Parts

            DRIVE SHAFT ASSY O NLA
            45-75034A 1 DRIVE SHAFT ASSY O NLA
            (more info) UnavailableUnavailable Parts
            #23 45-64258 DRIVE SHAFT (LONG SHAFT) (1 required per assembly)
            UNITED STATES 3795658 THRU 4126459 AUSTRALIA 8015040 THRU 8028439 BELGIUM 9041439 THRU 9078138 CANADA 7027323 THRU 7049107

            DRIVE SHAFT O – Replaced by 45-75033A 1
            45-64258This part has been superseded. DRIVE SHAFT O – Replaced by 45-75033A 1
            (more info) UnavailableUnavailable Parts

            DRIVE SHAFT ASSY,NLA 45-75033A 1
            45-75033A 1OEM Part 45-75033A 1 – Drive Shaft Assembly, NLA (more info) About Mercury Marine $500.00 $500.00 Add to shopping cart
            2 in stock. Explain stock levels
            #23 45-74851 DRIVE SHAFT (SHORT SHAFT) (1 required per assembly)
            UNITED STATES 4126460 AND UP AUSTRALIA 8028440 AND UP BELGIUM 9078139 AND UP CANADA 7049108 AND UP

            DRIVE SHAFT O – Replaced by 45-75034
            45-74851This part has been superseded. DRIVE SHAFT O – Replaced by 45-75034
            (more info) UnavailableUnavailable Parts

            DRIVE SHAFT,NLA 45-75034
            45-75034OEM Part 45-75034 – Drive Shaft, NLA (more info) About Mercury Marine $235.00 $235.00 Add to shopping cart
            1 in stock. Explain stock levels
            #23 45-74850 DRIVE SHAFT (LONG SHAFT) (1 required per assembly)
            UNITED STATES 4126460 AND UP AUSTRALIA 8028440 AND UP BELGIUM 9078139 AND UP CANADA 7049108 AND UP

            4575033 DRIVESHAFT A 45-74850
            45-74850OEM Part 45-74850 – Drive Shaft (more info) About Mercury Marine $149.95 $149.95 Add to shopping cart
            1 in stock. Explain stock levels

            DRIVE SHAFT,NLA 45-75033
            45-75033OEM Part 45-75033 – Drive Shaft, NLA (more info) About Mercury Marine $250.00 $250.00 Add to shopping cart
            1 in stock.

            November 18, 2015 at 1:47 pm #27302
            Buccaneer
            Participant

              US Member

              Thanks for the education Steve. Hope my dad’s old Merc 7.5
              has good shafts…… don’t think I want to spend $200
              buck on a new one for a 42 year old outboard!

              Prepare to be boarded!

              November 18, 2015 at 1:58 pm #27305
              20mercman
              Participant

                I understand about not wanting to buy a new one, my post was just to demonstrate that part number are often superseded and in some cases the new one will fit in older motors as direct fit, or may require a different water pump as is the case with the 69 and earlier 20hp’s. So often it is hard to tell what year your part is unless you can find casting numbers on the housing and peruse the parts list to see where it fell in the production runs.

                Marinengine.com has good lists to search through, as well as Crowley and others.

                Steve

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