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Jeep Wrangler JK Exhaust System

Maintenance Tips for the Jeep Wrangler JK Exhaust System

Maintaining the exhaust system of the Jeep Wrangler JK is a no-brainer. Aside from keeping highly toxic exhaust gas away from the engine and interior cabin, it also minimizes the noise from the engine. And without proper maintenance, your truck's exhaust components will start to break down and result in serious safety and performance issues. In this guide, we'll share some effective maintenance tips for Jeep Wrangler JK exhaust systems.

  • Use foil to track down leaks in the exhaust pipe.

Having trouble finding the source of the leak in your exhaust pipes? Try wrapping it in aluminum foil. Covering the pipes and other exhaust components will muffle the noise, and when you wrap foil over the source of the leak, you will immediately notice a huge reduction in sound. Also, since aluminum foil is inflammable, there is no risk of it catching fire when it contact with hot exhaust components. Just make sure to wear thick, heat-resistant gloves while doing so.

  • Remove rust from exhaust pipes with vinegar and baking soda.

The location of the exhaust pipes underneath the Jeeps means it is constantly exposed to mud and moisture, so it's no surprise that it is among the parts that often get corroded. And while there are many commercial rust removal products available, you can clean rust from pipes with a combination of vinegar and baking soda. Spray a mixture of 10 ounces of vinegar with three ounces of baking soda onto the rusted areas and scrub immediately with a wire brush. Spray more of the vinegar and baking soda solution and let it soak for at least 45 minutes and wipe with a towel. Repeat as necessary to remove any rust residue.

  • Make sure all the bolts are tightened properly.

The bolts that secure the muffler and exhaust pipe tend to become loose over time due to heat expansion, so make sure to check the bolts regularly if they are tightened properly. You should also take note of any rattling sounds coming from the pipe while driving, as this might indicate that one of the bolts is loose and that the pipe is hitting one of the metal components underneath the truck.

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  • Troubleshooting Guide for the Jeep Wrangler JK Exhaust System

    The exhaust system of the Jeep Wrangler JK is designed to contain and manage the toxic exhaust gases of the truck, so when it fails, it could pose serious problems for you and your vehicle. The following are some key troubleshooting pointers to follow for the Jeep Wrangler JK exhaust system.

    Visual check

    If you suspect problems with your truck's exhaust system, the first step is to do a visual inspection. On a well- ventilated area, raise the truck up with a hydraulic jack — this will make it easier for you to see all of the exhaust components and provide ample space between you and the hot exhaust pipes. If you have a hydraulic car lift, it is better to use that instead. Take note of any obvious signs of rust damage as well as areas where part may be broken or cracked. Once the engine and the pipes have cooled down, you can also use your hand to check for any loose pipes and components.


    Loud noises are a common problem of the Jeep Wrangler JK exhaust system and often an indicator of exhaust leaks. This is because there is added strain on the exhaust pipe caused by a hole from which air is escaping. And the louder the noise, the closer the leak is to the engine. You should take note of particular variations in the engine sound. A deep rumbling noise, for instance, may indicate a large hole in the pipe while pronounced cracking and popping sounds might be caused by a leaking manifold gasket.


    Another common exhaust problem is backpressure, which is caused by either a collapsed catalytic converter or a damaged muffler. Have someone step on the throttle while listening to the tailpipe. A backpressure in the exhaust will cause the tail pipe to "hesitate", resulting in one large whooshing sound that scatters smoke and dust everywhere.

    Another way to check for backpressure is by installing a pressure gauge at the air pump check valve. Ideally, the pressure readings should be less than 1.5 psi, although 2.75 psi is still considered normal. However, if the readings are higher than 3 psi, this might indicate excess backpressure in the pipes.