Exhaust pipe flex cracked, repair now or can it wait.

Discussion in 'Experienced Truckers' Advice' started by AFC, Jul 23, 2025.

  1. AFC

    AFC Heavy Load Member

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    I will get one tomorrow.
     
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  3. FLHT

    FLHT Road Train Member

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    Sold by the foot at parts houses.
    Their are two types of flex pipe sold.
    Stainless steel is the better of the two it does not rust .
    But it aint cheap either
    Myself I always used the red Locktite muffler tape on all joints.

    A good chop saw makes this an easy fit .....
    Watch your hands this stuff is sharp ..
     
    Last edited: Jul 24, 2025
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  4. Rideandrepair

    Rideandrepair Road Train Member

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    Doesn’t look like a standard 5” flex pipe. It’s specific to the engine. Looks like its rotted/broken at the flange.
     
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  5. rollin coal

    rollin coal Road Train Member

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    I'd be fixing that ASAP those fumes are nasty and will make you sick.
     
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  6. Long FLD

    Long FLD Road Train Member

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    That’s not standard flex pipe. It’s fluted on both ends and made to go in that spot.
     
  7. 201

    201 Road Train Member

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    I remember those breaking early on in the day, and had to put up with it. Detroit fumes were the worst. I kept a couple of those clamps in my tool box just for that reason. Diesel fumes do more than make you sick, they can kill you,,:eek:
     
  8. 86scotty

    86scotty Road Train Member

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    I wouldn't trust a used flex pipe. It's a wear part. $500 is a cheap truck part!
     
    Last edited: Jul 24, 2025
  9. JB7

    JB7 Heavy Load Member

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    True, but one could cut out the flex and use new flex with band clamps (like the one in the pic) on each end. Or have a shop weld on new flex. Have a Toyota that had flex after the manifold pipe, all connected as one piece to the converter. New part was $1,500 discounted and I did not want to buy an aftermarket converter. Shop installed a new section for about $150. Interesting how the exhaust sound changed after that, much louder, and the section replaced was only about 6-8 inches long.
     
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  10. Ridgeline

    Ridgeline Road Train Member

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    Well $500 for the part, have the dealer put it on.

    If you have a road side inspection, you’re screwed, it is an OOS order and a service call or a tow. They will not let you drive it.
     
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  11. Rideandrepair

    Rideandrepair Road Train Member

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    No way!! Come on it’s only 2 clamps. half hr job max. Tap it a bit with a hammer as you tighten it up. Re check it hot. Buy a steak dinner, pair of shoes, and a case of beer with the labor money saved.
     
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