Force II Cat-Back Exhaust System 2004-2008 Ford F-150 4.6/5.4L

Vehicle Info Needed

FLOWMASTERPART NUMBER: 389-17403

Force II Cat-Back Exhaust System 2004-2008 Ford F-150 4.6/5.4L

Name: Force II Cat-Back Exhaust System 2004-2008 Ford F-150 4.6/5.4L
Brand: FLOWMASTER
SKU: 389-17403
Price: 623.95 USD
Availability: InStock

^$623⁹⁵

Ships on 09/08/2026

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Ford

Force II Cat-Back Exhaust System

2004-2008 Ford F-150 4.6/5.4L

3" Tubing, 3.5" Polished SS Tips

Single Side Exit

Super 50 Series Muffler

Aluminized Steel

FLOWMASTER MUFFLERS 17403 Features:

The Force II® system is the perfect choice for the person who wants a subtle custom appearance with all the benefits and sound that a Flowmaster® single cat-back exhaust provides. The system delivers a moderate exterior tone and mild to moderate interior tone over the factory exhaust and ideally suited for customers looking for efficiency improvements without a lot of noise. This Force II system is a bolt-on system and bumps the tubing size up to a 3.00-inch mandrel-bent aluminized steel tubing flowing into the improved muffler design of the Super 50™ Series muffler over the stock exhaust. The mandrel-bent tailpipe uses the factory hanger locations making installation a breeze and is finished off with a 3.50-inch polished stainless steel tip. The Force II system is ideal for daily drivers and especially light towing applications such as boats and RV's. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation you can do at home. Aluminized Steel exhaust systems are covered by our 3-year Limited Warranty Note: This Force II system is also available in Stainless Steel with a Lifetime Limited Warranty. Check out part# 817403. Fits both 2/4 wheel drive models and all wheelbases.

Includes Hangers and Hardware for an Easy Installation
Mandrel-bent 16 Gauge Aluminized Steel Tubing
Large 3.50-inch Polished 304 Stainless Steel Tip
Dyno tuned for Maximum Performance
Super 50 Series Performance Muffler
Uses the Factory Hanger Locations
All Aluminized Steel Construction
Mild Exterior Exhaust Tone
3-year Limited Warranty
Minimal Interior Tone
Flowmaster Quality

Part TypeExhaust System

BrandFLOWMASTER

Package Height11.5

Package Width16.0

Package Length58.0

Weight53.0 PG

Tailpipe Diameter (In.)3

Muffler Inlet Inside Diameter3 in.

Hangers IncludedYes

Main Piping Diameter3 in.

Tail Pipe QuantitySingle

Inlet TypeClamp-On

Tip CutStraight

Exhaust Tip Material304 Stainless Steel

Catalytic Converter Quantity0

Exit LocationPassenger side

Inlet QuantityOne

Muffler Body Length10 in.

Sound LevelMild

Muffler MaterialSteel

Muffler Body MaterialAluminized Steel

Exhaust Tip CutAngled

Gasket Or Seal IncludedNo

Exhaust Tip IntercooledNo

Pipe ColorSilver

System FinishAluminized

Muffler Quantity1

Muffler Inlet Outside Diameter3.13 in.

Exit QuantityOne

Tip MaterialStainless steel

Muffler Flanged OutletNo

Tip Quantity1

Exhaust Tip ResonatedNo

Exhaust TypeSingle

Catalytic Converter IncludedNo

Heat Shield IncludedNo

Part CategoryPerformance Parts

Hardware IncludedYes

Exhaust Tip WallSingle Wall

Exhaust Tip Quantity1

Exhaust Tip FinishPolished

Exhaust Tip EdgeRolled Edge Angle Cut

Valve IncludedNo

Muffler TypeChambered

Pipe MaterialAluminized Steel

Muffler Body Width10 in.

Tail Pipe Tapered OutletNo

Muffler Body ShapeOval

Mounting Bracket IncludedNo

Muffler Outlet Quantity1

Muffler FinishBlack High-Temperature Paint Finish

Inlet Diameter3 in.

Clamps IncludedYes

Muffler StyleChambered

Tip Outlet Size3.5 in (88.9 mm)

FinishAluminized

Exit StyleSingle Out Side

Muffler Body Height5 in.

Tip IncludedYes

Clamping TypeFlat Band

Muffler Flanged InletNo

Spring Bolt Kit IncludedNo

Muffler SeriesSuper 50 Series

QuantitySold as a kit

Muffler IncludedYes

Exhaust Tip ConnectionClamp-On

System StyleCat Back

Tail Pipe Outlet Outside Diameter3 in.

Muffler ConfigurationSingle inlet/Single outlet

System MaterialSteel

Valve TypeNot Applicable

Tip Edge StyleRolled edge

Tip ShapeRound

Intermediate Pipe Diameter3 in (76.2 mm)

Exhaust Tip Diameter3.50 in.

Part FitmentDirect Fit

Vendor Part Number17403

Package Qty1

Package TypeEA

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