Flowmaster

21-26 Ford F-150 3.5L Powerboost Flowmaster 818166 American Thunder Cat-Back Exhaust System

Name: 21-26 Ford F-150 3.5L Powerboost Flowmaster 818166 American Thunder Cat-Back Exhaust System
Brand: Flowmaster
SKU: FLO818166
Price: 949.95 USD
Availability: InStock

$949.95 USD

Sale Sold out

Shipping calculated at checkout.

Flowmaster American Thunder Cat-Back Exhaust System - Part Number 818166

The Flowmaster American Thunder Cat-Back Exhaust System (Part Number 818166) is engineered specifically for the 2021-2026 Ford F-150 equipped with the 3.5L PowerBoost Hybrid engine. Built from durable 16-gauge 409 stainless steel with mandrel-bent tubing, this performance exhaust system is designed to improve exhaust flow while delivering long-lasting durability. A specially tuned resonator produces a deep, moderate-to-mild performance tone that enhances the driving experience without excessive interior drone. Finished with a large 5.00-inch black ceramic coated 304 stainless steel exhaust tip, this system provides a clean, aggressive appearance that complements the F-150's styling. Designed to utilize the factory hanger locations, the kit includes all required hardware and installation instructions for a straightforward at-home installation. Backed by Flowmaster's Lifetime Limited Warranty, this American Thunder exhaust system is an excellent upgrade for drivers looking to improve performance, sound, and appearance.

Key Features

Designed for 2021-2026 Ford F-150 equipped with the 3.5L PowerBoost Hybrid engine.
American Thunder Cat-Back exhaust system.
Constructed from durable 16-gauge 409 stainless steel tubing for long service life.
Mandrel-bent 3.00-inch and 3.50-inch tubing promotes improved exhaust gas flow.
Specially tuned resonator delivers a deep, moderate-to-mild performance exhaust tone.
Includes one 5.00-inch round black ceramic coated 304 stainless steel exhaust tip.
Rolled edge, angle-cut exhaust tip provides a custom performance appearance.
Single rear exit configuration.
Uses factory hanger locations for an easy installation.
Includes clamps, hangers, installation instructions, and all necessary hardware.
Chambered muffler with black high-temperature paint finish.
Clamp-on exhaust tip and inlet connections.
Natural finish 409 stainless steel piping.
Does not fit models equipped with the OEM Active Exhaust option.

Benefits

Improves exhaust flow through mandrel-bent stainless steel tubing for enhanced performance.
Produces a refined, deep exhaust note with a moderate-to-mild sound level suitable for daily driving.
Adds an aggressive, custom appearance with a large black ceramic coated exhaust tip.
Durable stainless steel construction helps resist corrosion and extends service life.
Direct-fit design utilizes factory mounting locations, reducing installation complexity.
Complete installation hardware is included for added convenience.
Backed by Flowmaster's Lifetime Limited Warranty for long-term confidence.

Product Specifications

Brand: Flowmaster
Part Number: 818166
Product Type: Cat-Back Exhaust System
Exhaust Series: American Thunder
Main Piping Diameter: 3.50 inches
Additional Tubing Size: 3.00 inches
Tubing Material: 16-gauge 409 Stainless Steel
Pipe Color: Silver
Pipe Finish: Natural
Muffler Included: Yes
Muffler Type: Chambered
Muffler Material: 409 Stainless Steel
Muffler Finish: Black High-Temperature Paint
Muffler Shape: Oval
Muffler Dimensions: 15.00 in. L x 10.00 in. W x 5.00 in. H
Exhaust Exit Style: Single Rear Exit
Sound Level: Moderate/Mild
Exhaust Tip Quantity: 1
Exhaust Tip Diameter: 5.00 inches
Exhaust Tip Length: 12.00 inches
Exhaust Tip Material: 304 Stainless Steel
Exhaust Tip Finish: Black Ceramic Coating
Exhaust Tip Shape: Round
Exhaust Tip Style: Rolled Edge, Angle Cut
Exhaust Tip Connection: Clamp-On
Tail Pipe Outside Diameter: 3.50 inches
Clamps Included: Yes
Hangers Included: Yes
Catalytic Converter Included: No
California Proposition 65: Yes
CARB Compliant: Yes
UPC: 090127844762

Install Difficulty Level

Difficulty: Easy.

This direct-fit cat-back exhaust system is designed to install using the factory hanger locations and includes all necessary hardware and installation instructions. No cutting or welding is required, making it a great upgrade for experienced DIY installers. The shortest published installation time is approximately 1 hour under normal shop conditions.