American Thunder® is the "original" Flowmaster sound. In most cases a very aggressive sound level, American Thunder systems use various chambered mufflers to achieve the performance gains and aggressive sound that you want from your car or truck, inside and out. Available in stainless steel or economical aluminized steel, American Thunder systems are a great choice when you want to be heard.

Fitment Information

• GMC Yukon XL 1500 5.3L (2001, 2002, 2003, 2004, 2005, 2006)
• Does Not Fit with Auto-Leveling Option.

Emissions Compliance

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Specs & Features

• 2WD/4WD: 2WD/4WD
  
• Emission Code: 5
  
• Exhaust Series: American Thunder
  
• Exit Position: Dual Side Exit
  
• Heat Shield: No
  
• Inlet Diameter (in): 3
• Material: Aluminized Steel
  
• Muffler Part Number: Kit Only
  
• Muffler Quantity: 1
  
• Muffler Series: Super 50 Series
  
• Outlet Diameter (in): 2.5
  
• Product Type: Catback Exhaust System
  
• Single Dual: DUal
  
• Sound Level: Aggressive / Moderate
  
• System Type: Cat-back
  
• Tip Diameter (in): 4
  
• Tip Quantity: 2
  
• Tubing Diameter (in): 2.5
• UPC: 700042018802
  
• California Proposition 65 Chemical Name: Chromium (hexavalent compounds) / Nickel (Metallic)
• California Proposition 65 Required: Yes
  
• Part Number: 17342
  

Product Description

For the person who wants a subtle custom appearance with all the benefits that a Flowmaster Cat-back exhaust system provides. This American Thunder® exhaust system delivers a deep powerful exterior tone with a mild to moderate interior tone. The mandrel-bent 3.00-inch aluminized steel tubing flows into a specially designed resonator and the Super 50 Series„¢ performance muffler helps keep things fairly mellow inside the cab area of the vehicle. The system uses the factory hanger locations and the dual 2.50-inch tailpipes are finished off with 3.00-inch polished stainless steel tips. Like all Flowmaster systems, benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation and is covered by our 3-year Limited Warranty. This system is covered by our 3-year Limited Warranty. Check out system #817342 for those who prefer a full stainless steel exhaust system covered by our Lifetime Limited Warranty.

Features:

• Specially Tuned Resonator to Help Control Interior Drone
• Includes Hangers and Hardware for an Easy Installation
• Mandrel-bent 16-gauge Aluminized Steel Tubing
• Dyno Tuned for Maximum Performance
• Deep Powerful Exterior Exhaust Tone
• Uses the Factory Hanger Locations
• Polished Stainless Steel Tips

Redline360 is an authorized Flowmaster dealer and sells only genuine Flowmaster products.