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Engine oil cooler allen bolt size??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 88K5Jimmy, Jul 1, 2004.

  1. 88K5Jimmy

    88K5Jimmy 1/2 ton status

    Jan 10, 2001
    Likes Received:
    Tulsa OK
    On the engine oil cooler, after you have taken the oil filter off, there is a large bolt that accepts an allen wrench. Does anybody know what size that is? Mine has been coming loose for the last couple of oil changes and I forget about it until its time to change oil again /forums/images/graemlins/tongue.gif


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