7099897C1 | Genuine International® Left Exhaust Tube

1. Channel Exhaust Gases

• Directs hot, potentially harmful gases away from the engine and cabin.
• Prevents heat or fumes from damaging vehicle components or entering the passenger area.

2. Reduce Noise

• Works with mufflers, resonators, and catalytic converters to minimize engine noise.
• Helps provide a quieter and safer driving experience.

3. Support Emissions Control

• Connects the engine to catalytic converters, Diesel Particulate Filters (DPF), or SCR systems.
• Ensures exhaust gases pass through devices that reduce pollutants like NOx, CO, and particulate matter.

4. Maintain Engine Efficiency

• Proper exhaust tube design helps optimize exhaust flow and backpressure, which can improve fuel efficiency and engine performance.

5. Enable Aftertreatment Systems

• In modern diesel trucks and buses, exhaust tubes are part of the aftertreatment system that works with DEF (urea injection) and SCR catalysts to reduce emissions.

1. Loud or Unusual Noise

• Hissing, popping, or rumbling sounds coming from the exhaust
• Noise usually worsens during acceleration or at idle

2. Exhaust Leaks

• Visible cracks, holes, or rust on the tube
• Smoke or fumes escaping from unusual locations (not the tailpipe)
• Smell of exhaust inside the cabin or engine compartment

3. Reduced Engine Performance

• Loss of power or sluggish acceleration
• Poor fuel efficiency due to improper exhaust flow or backpressure

4. Failed Emissions Tests

• Higher emissions readings because exhaust gases bypass the catalytic converter or aftertreatment system
• Check Engine Light or Emissions Warning may appear

5. Vibrations or Rattling

• Loose or broken exhaust tubes can rattle or vibrate
• Often noticeable under the vehicle or near mounting points

6. Corrosion or Rust

• Rusted sections can lead to holes or weak spots
• Most common in older vehicles or vehicles exposed to road salt and moisture

7. Unusual Smell

• Strong smell of exhaust fumes near the vehicle
• Indicates a leak that could be hazardous