21-26 Ford F-150 2.7L/3.5L/5.0L Flowmaster 738115 Signature Series Exhaust System

Flowmaster Signature Series Exhaust System

Part Number: 738115

The Flowmaster Signature Series Exhaust System 738115 delivers a premium cat-back exhaust upgrade designed for 2021-2026 Ford F-150 trucks equipped with 2.7L, 3.5L, and 5.0L engines. Engineered for drivers seeking improved exhaust flow, enhanced performance, and an aggressive to moderate performance tone, this system combines durable 304 stainless steel construction with Flowmaster's proven Signature Series muffler technology. The TIG welded design, mandrel bent tubing, and upscale black chrome exhaust tip provide a high-quality appearance while helping maximize airflow and long-term durability. With dyno-proven gains of up to 13 horsepower and 16 lb-ft of torque at the rear wheels, this performance exhaust system is an excellent choice for truck owners looking to upgrade sound, style, and capability.

Key Features

• Flowmaster Signature Series cat-back exhaust system designed specifically for select 2021-2026 Ford F-150 applications.
• TIG welded 304 stainless steel Signature Series muffler provides precise weld quality, durability, and a premium appearance.
• 3.00-inch mandrel bent brushed 304 stainless steel tubing improves exhaust flow while maintaining strength and corrosion resistance.
• Large 4.50-inch PVD coated black chrome exhaust tip adds a custom performance appearance.
• Signature Series muffler delivers an aggressive to moderate exhaust tone with enhanced performance characteristics.
• Factory mounting locations and included installation hardware support a straightforward installation process.
• Dyno-tested performance improvements provide increased horsepower and torque potential compared to the factory exhaust system.

Benefits

• Provides a deeper, more performance-oriented exhaust sound while maintaining everyday drivability.
• 304 stainless steel materials offer excellent corrosion resistance for long-lasting performance and appearance.
• Improves exhaust flow efficiency to support stronger engine performance.
• Enhances the rear appearance of the Ford F-150 with a premium black chrome exhaust tip.
• Designed for an installer-friendly upgrade using factory-style mounting locations.
• Backed by Flowmaster's Lifetime Limited Warranty for added product confidence.

Product Specifications

• Brand: Flowmaster
• Part Number: 738115
• Product Type: Cat-Back Exhaust System
• Exhaust Series: Signature Series
• Vehicle Position: Single Out Rear Exit
• Material: 304 Stainless Steel
• Finish: Natural brushed stainless steel tubing with black chrome exhaust tip
• Main Piping Diameter: 3.00 inches
• Exhaust Tip Diameter: 4.50 inches
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Finish: Black Chrome
• Exhaust Tip Length: 11.00 inches
• Exhaust Tip Shape: Round with angled cut and rolled edge
• Tail Pipe Quantity: 1
• Muffler Quantity: 1
• Muffler Material: 304 Stainless Steel
• Muffler Style: Oval absorption muffler
• Muffler Dimensions: 18.00 inches length x 9.00 inches width x 4.00 inches height
• Sound Level: Aggressive / Moderate
• Clamping Type: Flat band clamps
• Clamps Included: Yes
• Hangers Included: Yes
• Mounting Brackets Included: Yes
• Catalytic Converter Included: No
• Emission Code: 5

Install Difficulty level

This Flowmaster Signature Series Exhaust System is designed for an easy installation using factory mounting points and included hardware. The installer-friendly cat-back design allows the system to be installed with basic mechanical skills, making it a manageable upgrade for experienced DIY enthusiasts or professional installers. Installation requires moderate mechanical skill and can typically be completed in approximately 1 to 2 hours depending on tools and vehicle access.

Vehicle Fitment

• 2021-2026 Ford F-150 with 2.7L EcoBoost engine
• 2021-2026 Ford F-150 with 3.5L EcoBoost engine
• 2021-2026 Ford F-150 with 5.0L engine
• Fits applicable non-PowerBoost models originally equipped with factory dual exhaust out the rear bumper.

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