Flowmaster Exhaust Muffler (MPN: 718155)

Enhance performance and sound with this durable stainless steel muffler.

The Flowmaster Exhaust Muffler is engineered for the 2020 to 2025 GM 2500HD and 3500HD trucks equipped with a 6.6 Liter gas engine. This direct-fit muffler features a round 5 inch stainless steel case and is designed to provide an aggressive exhaust tone while improving overall performance. With a single center 3-1/2 inch inlet and outlet, this muffler maximizes exhaust flow and enhances towing power without compromising the factory warranty.

Constructed from 409 stainless steel, the Flowmaster muffler ensures long-lasting durability and reliable service. The mandrel bent 16 gauge tubing is specifically designed to optimize exhaust flow, resulting in potential increases of up to 13 horsepower and 11 pound-feet of torque at the wheels. The tuned Flow FX style muffler delivers a deep, aggressive to moderate performance tone while effectively eliminating interior drone, making it suitable for various driving conditions.

Installation is straightforward, with an estimated time of just one hour, allowing for a hassle-free upgrade at home. This vehicle-specific muffler assembly is compatible with both 2 and 4 wheel drive models, making it a versatile choice for truck owners looking to enhance their vehicle's performance and sound.

Features

• 3-1/2 Inch Mandrel Bent 16 Gauge 409 Stainless Steel Tubing Maximizes Exhaust Flow And Improves Durability
• A Tuned Flow FX Style Muffler Delivers A Deep, Aggressive To Moderate Performance Tone And Improves Exhaust Flow With No Drone
• Maximum Increases Of Up To 13 Horsepower And 11 Pound Feet Over The Stock Exhaust At The Wheels
• Tuned Performance Muffler Eliminates Interior Drone

Specifications

• Manufacturer: Flowmaster
• Manufacturer Part Number: 718155
• Shape: Round
• Inlet Position: Center Single
• Inlet Diameter (IN): 3-1/2 Inch
• Outlet Position: Center Single
• Outlet Diameter (IN): 3-1/2 Inch
• Universality: Vehicle Specific
• Estimated Install Time (Hours): 1
• Case Diameter (IN): 5 Inch
• Case Length (IN): 18 Inch
• Overall Length (IN): 34-1/4 Inch
• Material: Stainless Steel
• Includes Tip: Without Tip
• Tip Length (IN): Without Tip
• Tip Diameter (IN): Without Tip
• Tip Finish: Without Tip
• Tip Material: Without Tip

Compatibility / Fit

• 2020-2026 Chevrolet Silverado 2500 HD
• 2020-2026 Chevrolet Silverado 3500 HD
• 2020-2026 GMC Sierra 2500 HD
• 2020-2026 GMC Sierra 3500 HD

Technical Documents

• 718155_Instructions.pdf