04-08 Ford F-150 4.6L/5.4L V8 Flowmaster 17403 Force II Cat-back Exhaust System

Flowmaster Force II Cat-Back Exhaust System - Part #17403

The Flowmaster Force II Cat-Back Exhaust System (Part #17403) is engineered for 2004-2008 Ford F-150 and Lincoln Mark LT trucks equipped with 4.6L or 5.4L engines. Designed for drivers seeking improved performance without excessive exhaust noise, this premium cat-back system delivers a refined, mild exhaust tone while enhancing exhaust flow for better throttle response and overall driving enjoyment. Featuring mandrel-bent 3.00-inch aluminized steel tubing and the legendary Flowmaster Super 50 Series performance muffler, this exhaust system provides an excellent balance of power, efficiency, and everyday comfort. A polished 3.50-inch 304 stainless steel exhaust tip adds a clean, custom appearance that complements the truck's factory styling. Ideal for daily driving, commuting, and light towing applications such as boats and RVs, this bolt-on system utilizes the factory hanger locations for a straightforward installation with no welding required.

Key Features

• Flowmaster Force II performance cat-back exhaust system.
• Designed for 2004-2008 Ford F-150 and Lincoln Mark LT models with 4.6L or 5.4L engines.
• Large 3.00-inch mandrel-bent 16-gauge aluminized steel tubing improves exhaust flow.
• Legendary Super 50 Series chambered performance muffler.
• Mild exterior exhaust tone with minimal to moderate interior sound.
• Dyno tuned for improved performance and efficiency.
• Single side exit configuration.
• 3.50-inch polished 304 stainless steel rolled-angle exhaust tip.
• Uses factory hanger locations for a true bolt-on installation.
• Includes all necessary clamps, hangers, and installation hardware.
• Compatible with both 2WD and 4WD models.
• Fits all wheelbase configurations.

Benefits

• Improves exhaust flow for enhanced horsepower, torque, and throttle response.
• Produces a refined performance sound without excessive cabin drone.
• Provides a custom appearance with a polished stainless steel exhaust tip.
• Excellent choice for daily-driven trucks and light towing applications.
• Direct bolt-on design minimizes installation time and eliminates welding.
• Built from durable aluminized steel for long-lasting performance.
• Backed by Flowmaster's 3-Year Limited Warranty for added confidence.
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Product Specifications

• Part Number: 17403
• Brand: Flowmaster
• Exhaust Series: Force II
• Product Type: Cat-Back Exhaust System
• Sound Level: Mild
• Material: 16-Gauge Aluminized Steel
• Finish: Aluminized Silver
• Main Pipe Diameter: 3.00 inches
• Inlet Diameter: 3.00 inches
• Muffler Series: Super 50 Series
• Muffler Type: Chambered
• Muffler Material: Aluminized Steel
• Muffler Finish: Black High-Temperature Paint
• Muffler Body Size: 10 in. Length x 10 in. Width x 5 in. Height
• Exit Style: Single Side Exit
• Tailpipe Diameter: 3.00 inches
• Exhaust Tip Diameter: 3.50 inches
• Exhaust Tip Length: 12.00 inches
• Exhaust Tip Material: Polished 304 Stainless Steel
• Exhaust Tip Shape: Round
• Exhaust Tip Style: Rolled Edge, Angle Cut, Single Wall
• Tip Connection: Clamp-On
• Clamps Included: Yes
• Hangers Included: Yes
• Catalytic Converter Included: No
• Drive Compatibility: 2WD and 4WD
• California Proposition 65: Yes

Install Difficulty Level

Easy. This direct bolt-on exhaust system is designed to install using the factory mounting points and factory hanger locations. All required clamps, hangers, and hardware are included, making installation straightforward for most enthusiasts with basic hand tools. Installation can be completed in as little as 2 hours.

Vehicle Fitment

• 2004-2008 Ford F-150 4.6L V8
• 2004-2008 Ford F-150 5.4L V8
• 2006-2008 Lincoln Mark LT 5.4L V8
• Fits both 2WD and 4WD models.
• Fits all wheelbase configurations.

For questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.