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Exhaust Flex Joint Replacement: A Step-By-Step Guide

So you’ve determined that you’ve got a flex pipe exhaust leak, and the flex pipe needs to be replaced. Now what? If you’ve got the tools and a DIY spirit, you should be able to manage an exhaust flex joint replacement yourself. You’ll need welding equipment and a good handle on your car’s systems, but replacing this part on your car shouldn’t be too difficult. Here’s a step-by-step guide on how to take care of an exhaust flex joint replacement on your own.


  1. Remove the exhaust from your car: This part is fairly simple. Disconnect your exhaust system from your car, so that you have room to work on it, and remove the broken or leaking exhaust flex pipe. If it’s still hanging on to the exhaust pipe connector, you’ll need to cut it where it’s been welded to the rest of the exhaust.
  2. Clean up the cut: Use a filing tool to remove any sharp bits from the now cut end of the exhaust. This will make sure you don’t hurt yourself in the process and protects your exhaust from further damage down the line.
  3. Prepare to weld: Use your preferred method of preparing both the exhaust and the exhaust flex joint replacement part for welding. Make sure the metal is clean to avoid any contaminants in the weld. Also, before you weld, make sure you test on some scrap metal to figure out the best settings before working on the final product. Most steel has a melting point of 2,500 degrees Fahrenheit, but it’s always best to test your methods before moving to the final product.
  4. Start to weld: Reinstall your exhaust onto your car with the new exhaust flex joint loosely in place to ensure everything fits, and disconnect your car’s battery. Then, go ahead and make a few welds to secure the flex joint in the position you want it. You’re not doing the full welding right now; just enough to hold the pipe in place when you remove the exhaust to finish welding.
  5. Finishing and cleaning: Remove the exhaust from your car again and move it to an open work area to finish welding. Be sure to clean up once you’ve done your initial pass to make sure the seal is airtight. Once you’re confident in your weld, reattach your exhaust system and give it a test.

If you’re unsure about your abilities or think you might need assistance in this, be sure to ask a professional. Installing your exhaust flex joint replacement can be complicated, and having a professional take a second look is never a bad idea.

By |2018-10-15T16:09:42+00:00October 15th, 2018|Comments Off on Exhaust Flex Joint Replacement: A Step-By-Step Guide

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