FLOWMASTER KO42441 Muffler Resonators

( Brand: Flowmaster ), ( Part Type: Muffler ), ( Manufacturer Part Number: KO42441 )

Review FLOWMASTER

The Flowmaster Ko4-441 Exhaust System is a high-performance aftermarket exhaust solution designed to enhance the power and sound of your vehicle. This cat-back exhaust system is engineered specifically for select Ford, Mustang, and Lincoln models with 5.0L Coyote engines.

The Ko4-441 system is constructed primarily from 409 stainless steel, ensuring superior durability against rust and corrosion. The system's design features 4-inch diameter tubing from the catalytic converter back, which increases exhaust flow and reduces backpressure. This results in improved engine performance and an increase in horsepower and torque.

The exhaust system also comes with a set of Flowmaster's proprietary mufflers, which are known for their unique and distinctive sound. These mufflers utilize a series of chambered design and internal baffling to provide a deep and aggressive exhaust note while maintaining a reasonable level of cabin noise.

The Ko4-441 system is also designed for a seamless installation, with factory-style hangers and brackets that minimize the need for modifications. The system includes all necessary hardware for installation, and it is compatible with both manual and automatic transmissions.

The Flowmaster Ko4-441 Exhaust System is a popular choice among Ford, Mustang, and Lincoln enthusiasts who are looking to improve the performance and sound of their vehicles. With its durability, improved power, and distinctive exhaust note, this system is an excellent investment for any enthusiast looking to take their ride to the next level.

The Flowmaster Ko4-441 Exhaust System is a popular aftermarket exhaust option for those looking to enhance the performance and sound of their vehicles. Here are some pros and cons to consider before making a purchase:

1. Increased Power: The Flowmaster Ko4-441 exhaust system is designed to increase the flow of exhaust gases, which can lead to improved engine performance and increased horsepower.

2. Enhanced Sound: The system is known for its distinctive and aggressive exhaust note, which is a result of the mandrel-bent tubing and the Flowmaster mufflers.

3. Durability: The exhaust system is made of high-quality materials, including stainless steel, which ensures longevity and resistance to rust and corrosion.

4. Improved Gas Mileage: Some users have reported improved gas mileage after installing the Flowmaster Ko4-441 exhaust system, although this is not a guaranteed result.

1. Cost: The Flowmaster Ko4-441 exhaust system can be quite expensive, especially when compared to stock exhaust systems or other aftermarket options.

2. Installation Complexity: Installing the exhaust system can be a challenging process, especially for those without experience in exhaust system installation. It may require professional installation, which will add to the total cost.

3. Loudness: The exhaust system is known for its loud and aggressive exhaust note, which may not be to everyone's liking. It may also be a concern for those who live in areas with noise restrictions.

4. Backpressure: Some users have reported issues with increased backpressure after installing the Flowmaster Ko4-441 exhaust system, which can lead to decreased performance and power gains.

The Flowmaster Ko4-441 exhaust system offers several benefits, including increased power, enhanced sound, and durability. However, it also comes with some drawbacks, such as cost, installation complexity, and potential issues with backpressure. Ultimately, the decision to purchase the Flowmaster Ko4-441 exhaust system depends on your individual preferences, budget, and vehicle requirements.

If you're looking for a high-performance exhaust system that delivers a distinctive exhaust note and increased power, the Flowmaster Ko4-441 exhaust system is a solid option to consider. However, be prepared for the added cost, potential installation challenges, and potential issues with backpressure. It's also important to ensure that the system is compatible with your specific vehicle model and make. If you're unsure, consult with a professional exhaust system installer or the Flowmaster customer support team for guidance.

part # ko42441 price

• $59.95

specifications mufflermooch:

• brand: Flowmaster
• part type: Muffler
• manufacturer part number: KO42441

returns mufflermooch:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

seller mufflermooch:

• rating: 99.4%
• # reviews: 69760

offer mufflermooch:

• quantity: 5
• sold: 0
• started: May 4, 2026
• best offers: True
• options: Ship-to-home
• availability: In Stock

shipping mufflermooch:

• transit: 3-7 Days
• service: Standard
• type: Fixed
• class: Standard
• cost: $0.00

general mufflermooch:

• Car Truck Parts Accessories > Exhaust Emission Systems > Mufflers Resonators
• condition: New

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• wallet: Apple-pay
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• credit card: Visa

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