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Transmission Cooler Install on 1991 GMC Suburban with 700R4 trans and 5.7L


I am having difficulty finding which radiator adapter I need to order. The 3 options Ive found are D13035, D13004 or D13018. Do you have any record of which part should work? Thanks!


Expert Reply:

Not all transmission coolers require special adapters for connecting to the lines of the transmission. The 700R4 does not need one according to Derale. Do you can install the part # D13501 without a fitting adapter and can just run the rubber hoses of the kit to the lines and radiator you have now.

expert reply by:
Jameson C

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