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430 Need help locating coolant hose on diagram

Discussion in '360/430' started by Mercedes_Benz, Aug 27, 2023.

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  1. Mercedes_Benz

    Mercedes_Benz Formula Junior
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    Nov 1, 2003
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    #1 Mercedes_Benz, Aug 27, 2023
    Today while doing and oil change I noticed a pretty good size coolant leak. I pressure tested it, and was easy to find where it was coming from, it was coming from one thin rubber hose under the thermostat area. I want to buy a new hose, but I looked all over on the part diagrams and cannot see to find it.

    Attached is the hose I need.

    also, attached is the basic parts diagram under cooling system and this hose is not on there.



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  2. Qavion

    Qavion F1 World Champ
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    #2 Qavion, Aug 27, 2023
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  3. Mercedes_Benz

    Mercedes_Benz Formula Junior
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    #3 Mercedes_Benz, Aug 27, 2023
  4. mike32

    mike32 F1 Veteran

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    #4 mike32, Aug 27, 2023
    Its a hot water supply for the heating, coming from the engine coolant from what i can see.
    If one hose has gone, thinking about doing the rest if original. Just done mine as cracking under the hose clips. The radiator hoses are real fun to get to.
     
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  5. Qavion

    Qavion F1 World Champ
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    #5 Qavion, Aug 27, 2023
    I think you'll find that most cars with internal combustion engines get cabin heat from the engine coolant system. Ferraris certainly do.

    Look at the graphic I posted above. It shows the hose coming from the same location as in your photo, next to the water pump pulley.

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  6. yelcab

    yelcab F1 World Champ
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    #6 yelcab, Aug 27, 2023
    It's called a heater hose and does not appear on the engine cooling diagram. It's shown on the HVAC diagram. Really any heater hose of the right size will do. But, I get it if you want the horsy box.
     
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  7. Mercedes_Benz

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    #7 Mercedes_Benz, Aug 28, 2023
    Thank you! Sorry, I thought you were saying the line was not filled with coolant and rather it was a refrigerant line. You are correct from what I see, I think that hose is what I need, and I will order it.

    I was thinking to order some of the other nearby hoses in that area, wow! I am not cheap, but some of these are expensive! Anyone know if all these hoses are rubber? or are any silicone?
     
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  8. mike32

    mike32 F1 Veteran

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    #8 mike32, Aug 28, 2023
    I just changed mine as original, mine were cracking under the clips but the body of the hoses were fine. If you do the radiator hoses, you should get away using 4 off the cheaper ones, rather than 2+2. Only 10 mm difference in length but big cost difference. Only 1 hose is a straight length so near impossible to get at local store, others are different size end to end
     
  9. Andrie

    Andrie Formula Junior

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    #9 Andrie, Aug 28, 2023
    I've replaced most of my coolant hose as I had one failure. I guessed I missed this one. I'm about to order them but they listed two parts. One is "Applicable for GD" and "Not for GD". Anyone knows what that means?
     
  10. mike32

    mike32 F1 Veteran

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    #10 mike32, Aug 28, 2023
    It is for uk cars
    Did you change the one going vertically up from the thermostat area to the cooler , if so where is it on the drawings
     
  11. Mercedes_Benz

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    #11 Mercedes_Benz, Aug 28, 2023
    I am not changing all right now, the front I am leaving... I ordered 4 hoses including the one that was leaking. I am only changing that one, and 3 others right nearby it.
     
  12. Mercedes_Benz

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    #12 Mercedes_Benz, Aug 28, 2023
    I did not see that option when ordering my hose. You sure you picked the right part? Because I know what you mean and have seen that, but didn't see it say that on this part.
     
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  13. Qavion

    Qavion F1 World Champ
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    #13 Qavion, Aug 28, 2023
    Well-spotted. Item 34 (P/N 68237600) only has one variation. Item 35 has the GD (Right Hand Drive)/non-GD (Left Hand Drive) variations and has two part numbers.
     
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  14. Andrie

    Andrie Formula Junior

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    #14 Andrie, Aug 28, 2023
    @Mercedes_Benz you’re right, I mixed it up with #35.

    @Qavion thanks for letting me know. I’m trying to replace all the rubber hoses. So far only 34 & 35 are rubber I think. I had bad experience with my old NSX radiator hose burst at 15 years. And last year my F430 hose burst at 15 years. So I think it’s time to replace all the rubber hoses.
     
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  15. tazandjan

    tazandjan Three Time F1 World Champ
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    #15 tazandjan, Aug 28, 2023
    GD is guida destra which translates as right-hand drive, as Mike stated above.
     
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  16. Mercedes_Benz

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    #16 Mercedes_Benz, Aug 29, 2023

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