Details

• Brand:

  

• SKU:

  84488077

• Other Names:

  Exhaust Muffler

• Description:

  Give your Sierra increased horsepower and a more assertive sound with the GMC Performance 5.3L Cat-Back Single-Exit Exhaust Upgrade System. This exhaust system offers an increase of up to 7 horsepower and 4 lb.-ft. of torque, while reducing backpressure by 35% at 300-g/s, based on correlated flow testing. Designed and validated by GMC Performance engineers, this 304 Stainless Steel Cat-Back system is tuned to maximize the performance experience while minimizing drone. Give your vehicle increased horsepower and a more assertive sound with this Performance 5.3L Cat-Back Single-Exit Exhaust Upgrade System. Designed and validated by authorized Performance engineers, this 304 Stainless Steel Cat-Back system is tuned to maximize the performance experience while minimizing drone. This Performance Exhaust Upgrade System includes the rear muffler assembly, Y-Pipe, exhaust clamps and all necessary mounting hardware. It is 50-state emissions legal and will not void the New Vehicle Limited Warranty.
  
  

  
  

  Performance, Exhaust Upgrade - GMC Parts Pro (84488077)

  The Performance, Exhaust Upgrade - GMC Parts Pro (84488077) is a genuine OEM performance accessory engineered to enhance your vehicle’s exhaust system while maintaining the quality, fit, and reliability expected from factory-designed components. Manufactured to GMC Parts Pro’s exact factory specifications, this exhaust upgrade delivers precise fitment, premium construction, and seamless integration with the original exhaust system for a refined performance appearance and sound.

  Constructed from high-quality automotive-grade materials, this performance exhaust upgrade is built to withstand extreme exhaust temperatures, moisture, corrosion, road debris, and continuous thermal cycling. Its durable construction helps resist rust, discoloration, and long-term wear, ensuring dependable performance and an attractive factory-quality finish throughout the life of the vehicle.

  Functionally, this exhaust upgrade is designed to enhance the vehicle’s exhaust system with a more aggressive, performance-inspired character while maintaining compatibility with the factory exhaust routing and mounting locations. Precision-engineered OEM components help preserve proper exhaust flow, secure system alignment, and long-term durability, making this upgrade an excellent choice for restoring or enhancing the vehicle’s factory performance styling.

  As a genuine GMC Parts Pro OEM accessory, this exhaust upgrade is manufactured to precise factory dimensions, mounting specifications, exhaust flow requirements, material standards, heat resistance specifications, and fitment tolerances to ensure secure installation and dependable long-term performance. OEM engineering helps maintain the original reliability, structural integrity, and performance characteristics intended by the manufacturer.

  Installation is recommended when upgrading the factory exhaust system, replacing worn or damaged exhaust components, or enhancing the vehicle with authentic GMC performance accessories. Proper installation helps ensure correct alignment, leak-free connections, and reliable operation under all driving conditions.

  • Genuine GMC Parts Pro OEM performance exhaust upgrade

  • Enhances the factory exhaust system with a performance-inspired appearance and sound

  • High-quality automotive-grade construction for long-lasting durability

  • Resistant to extreme heat, corrosion, moisture, and road debris

  • Designed for seamless integration with the factory exhaust system

  • Precision-engineered for factory fit and secure installation

  • Restores OEM quality, durability, and performance styling

  Choosing the Performance, Exhaust Upgrade - GMC Parts Pro (84488077) helps enhance your vehicle’s performance-inspired character while delivering the fit, quality, and durability expected from a genuine GMC Parts Pro OEM performance accessory.

  
  

• Condition: New
• Notes: 5.3L Cat-Back Single-Exit w/Polished Tip and GMC Logo.

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