Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
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Flowmaster FlowFX Direct-Fit Muffler (21-26 3.5L EcoBoost F-150 w/ Factory Dual Exhaust, Excluding Raptor)Find parts that fit my vehicle
Item T599563-35
Our Price
$425.95 each
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$21.30 Available in AT Cash Rewards.
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Large 3.00-inch Mandrel Bent Pipes for Improved Exhaust Flow and Increased Power
- Flowmaster Flow FX Series Muffler Enhances Performance and Sound Quality
- Straight-Through Flow FX Design Produces a Deep, Aggressive Exhaust Tone
- Maximum Power Gains of 18 HP and 14 lb-ft Torque at the Rear Wheels
- Durable 409 Stainless Steel Construction with a Natural Finish
- Direct-Fit Connection to Factory Dual Tailpipes for Easy Installation
- Includes All Necessary Hardware and Instructions
- One (1) Year Limited Warranty
- Fits 2021–2026 Ford F-150 Models Equipped with 2.7L, 3.5L, or 5.0L Non-PowerBoost Engines and Factory Dual Exhaust, Excluding Raptor
| Brand | Flowmaster |
| Muffler Inlet Size | 3.00 Inch |
| Muffler Installation Type | Clamp-On Muffler |
| Muffler Type | Chambered Muffler |
Description
Performance Enhancement. The Flowmaster FlowFX Direct-Fit Muffler optimizes exhaust flow to boost horsepower and torque across compatible Ford F-150 models. It delivers a richer, deeper exhaust note that enhances engine sound without sacrificing output.
Construction and Appearance. Fully constructed from robust 409 stainless steel, this muffler features large mandrel bent pipes and a natural finish. Its oval-shaped muffler body and straight-through Flow FX design ensure durability and a distinctive aggressive sound profile.
Installation. Designed as a direct-fit system, this muffler installs using existing factory hangers and mounts without the need for drilling or cutting. All installation hardware and step-by-step instructions are included for a straightforward, hassle-free upgrade.
Warranty. The product is backed by a one-year limited warranty, providing assurance of quality and long-lasting performance.
Application. Specifically engineered to fit 2021–2026 Ford F-150 trucks equipped with 2.7L, 3.5L, or 5.0L non-PowerBoost engines that feature factory dual tailpipes. This excludes the Raptor model.
Flowmaster 718172
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- Chambered Muffler
- Hardware and Instructions
4.1
Customer Reviews (12)
Questions & Answers
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Will It Fit My F-150
- 3.5L V6 EcoBoost - 21, 22, 23, 24, 25, 26
- 3.5L V6 EcoBoost Limited - 23
