Coolant Bypass Seals
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Coolant Bypass Seals
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Dorman - Help Coolant Bypass Seals

Part No. 56390 Warranty Details  
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Engineered from high-quality materials for a long-lasting service life, our Engine Coolant Water By-Pass Gaskets provide an airtight seal for the engine cooling system. Replacement restores operation.

Product Features:
  • Direct replacement for a proper fit
  • Durable against fluctuations in under hood temperatures
  • Protects engine against overheating
  • Easy to install
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3 Questions | 3 Answers
Displaying questions 1-3
  • Q:

    Where are these seals located on my GMC 2500HD 4w 6.1L engine?
    Asked on 2/9/2014 by Jim from New Hill, North Carolina

    1 answer



      Glad to assist Jim! I have forwarded the picture of the cooling system to your email address. In that picture, item #6 indicates the location of these coolant bypass seals.

      Answered on 2/12/2014 by Vincent from AAP
  • Q:

    Is this 56390 dorman a set of four gaskets like the picture shows?
    Asked on 10/10/2010 by looking to buy

    1 answer




      Answered on 10/12/2010 by Mike the master of auto parts from AAP
  • Q:

    where are these water bypass gasket located on my gmc 2004 2500HD 6liter?
    Asked on 9/5/2010 by steve from Northern IL

    1 answer

    • A:

      Yes, as long as it's a gas engine.

      Answered on 10/15/2010 by Bret Rutan from Greensboro, NC
Displaying questions 1-3

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