MBRP 3-Inch Cat-Back Exhaust Single Side Armor Plus 4.8L/5.3L 2003-2006 Chevy Silverado 1500; 2007 Chevy Silverado 1500 Classic; 2003-2006 GMC Sierra 1500; 2007 GMC Sierra 1500 Classic

Free Shipping. Verified fitment for 2003-2006 GMC Sierra 1500; 2003-2006 Chevy Silverado 1500; 2007-2007 Chevy Silverado 1500 Classic; 2007-2007 GMC Sierra 1500 Classic. Orders Placed By 1PM CST Get Shipped Same Day. This MBRP cat back is built for buyers who want a direct-fit change in exhaust flow, tone, and durability without gambling on generic universal hardware.

Overview

This exhaust system kit uses a vehicle-specific layout with T409 Stainless Steel, 3.0 inch sizing, and a single outlet configuration. It is well-suited to daily driving, highway use, and owners who want a direct-fit upgrade with real fitment confidence. This fitment profile ties the part to 4.8 Liter / 5.3 Liter vehicles, which matters because sound, flow demand, and packaging change with engine and fuel type.

Key Features

• Configuration: Cat Back — defines where the system starts and how much of the factory exhaust it replaces
• Material: T409 Stainless Steel — important for corrosion resistance, heat-cycle durability, and long-term service life
• Tubing Size: 3.0 inch — relevant to flow capacity, sound character, and the balance between response and drivability
• Series: Armor Plus — useful when comparing entry-value construction against longer-life stainless options inside the MBRP range
• Finish: Stainless — matters for surface durability and how the system holds appearance over time
• Outlet: Single — changes rear appearance, exit strategy, and how sound leaves the truck or SUV
• Engine Match: 4.8 Liter / 5.3 Liter — keeps the part anchored to the intended powertrain instead of a generic application list
• Warranty: Lifetime Warranty — useful for understanding long-term ownership coverage

Engineering Notes

Cat Back changes the exhaust flow path with a platform-specific layout, which is what separates a direct-fit system from a generic pipe solution. On half-ton trucks, owners generally want stronger exhaust character and lower restriction without sacrificing daily drivability. That makes material choice, system length, and cabin-drone control more important than headline sound alone. T409 Stainless Steel matters in the real world because corrosion resistance determines how well the system survives heat cycles, moisture, road salt, and long service intervals. The 3.0 inch sizing influences gas velocity, sound character, and overall restriction. Bigger is not automatically better; the right balance depends on the application. Within the MBRP range, the Armor Plus designation helps buyers compare construction level, service life, and long-term ownership value.

Important Notes

• Cab configuration coverage includes: Crew Cab, Extended Cab.
• Review the installation instructions before ordering to confirm hardware, routing, and whether any cutting or adaptation is required.
• This product includes a California Proposition 65 warning.

Verified Fitment

2003-2006 GMC Sierra 1500; 2003-2006 Chevy Silverado 1500; 2007-2007 Chevy Silverado 1500 Classic; 2007-2007 GMC Sierra 1500 Classic