FLOWMASTER L159788 Exhaust Muffler 743593990333

( Brand: Flowmaster ), ( Part Type: Exhaust Muffler ), ( Manufacturer Part Number: L159788 ), ( Fitment Type: Performance/custom ), ( Material: Stainless Steel ), ( Shape: Oval ), ( Tip Diameter: In ), ( Color: Gray ), ( Inlet Connection Type: Pipe Connection ), ( Mount Type: Uses New Hangers ), ( Body Width: 9.75 ), ( Tip Material: No Tip ), ( Sound Level: Moderate Sound ), ( UPC: 743593990333 )

Review FLOWMASTER Exhaust Muffler Ford Super Duty fits F-250 1999–2004

Introducing the Flowmaster L159788 Exhaust Muffler, a superior upgrade for your Ford F-250 pickup truck model years 1999 to 2004. This exhaust muffler, manufactured by the renowned Flowmaster brand, is designed to deliver an exceptional performance and a distinctive exhaust note.

The L159788 muffler is engineered using 16-gauge aluminized steel, ensuring durability and resistance to corrosion. Its unique design features a parallel flow muffler core, which maximizes exhaust flow for increased power and improved fuel efficiency. This muffler is also CARB-certified, meaning it meets the stringent emission standards set by the California Air Resources Board.

One of the standout features of the Flowmaster L159788 exhaust muffler is its resonator technology. This technology provides a balanced exhaust flow, resulting in a deep, rumbling exhaust note that is both powerful and pleasing to the ear. It's the perfect combination of performance and sound that is sure to enhance your driving experience.

The installation process for the L159788 muffler is straightforward and can be completed by most DIY enthusiasts. It comes with all the necessary hardware for installation, making it a hassle-free upgrade. Additionally, the muffler's inlet and outlet dimensions are identical to the stock muffler, ensuring a seamless fit.

In summary, the Flowmaster L159788 Exhaust Muffler is an excellent choice for Ford F-250 owners looking to improve their vehicle's performance and add a unique exhaust note. Its robust construction, efficient design, and CARB certification make it a reliable and long-lasting upgrade. With its easy installation process and balanced exhaust flow, this muffler is an investment that is sure to provide years of enjoyment.

Pros and Cons of Installing a Flowmaster L159788 Exhaust Muffler on a 1999-2004 Ford F-250

The Flowmaster L159788 exhaust muffler is a popular aftermarket option for Ford F-250 owners from 1999 to 2004. This muffler, known for its unique sound and performance enhancements, comes with several advantages and disadvantages.

1. Enhanced engine performance: The Flowmaster muffler can help your Ford F-250's engine breathe better, leading to improved horsepower and torque.

2. Distinctive exhaust sound: The muffler's unique design provides a deep, resonant exhaust note that many enthusiasts appreciate.

3. Durability: Flowmaster is known for manufacturing high-quality exhaust components, and the L159788 muffler is no exception.

4. Improved gas mileage: Some users report minor improvements in fuel efficiency after installing the Flowmaster muffler.

5. Enhanced engine responsiveness: The free-flowing design of the muffler can help reduce exhaust backpressure, leading to quicker engine response.

1. Cost: The Flowmaster L159788 muffler is more expensive than OEM parts.

2. Installation complexity: Installing the muffler may require professional assistance or advanced DIY skills.

3. Increased noise levels: The muffler's design focuses on performance, which can lead to increased noise levels compared to factory exhaust systems.

4. Potential for increased emissions: Some users report higher emissions after installing the Flowmaster muffler, although this is not a concern for all vehicles.

Installing a Flowmaster L159788 exhaust muffler on a 1999-2004 Ford F-250 can offer improved engine performance, a distinctive exhaust sound, and enhanced durability. However, it comes with increased cost, installation complexity, increased noise levels, and potential increases in emissions. Ultimately, the decision depends on your priorities as a Ford F-250 owner if you value improved performance and a unique exhaust note, this muffler could be an excellent investment. If you prefer a quieter, stock exhaust system or are concerned about emissions, it might be better to stick with the OEM part.

part # l159788 prices

• $228.40-$230.26

specifications mufflermooch:

• for models: F-250
• for makes: Ford
• for years: 1999-2004
• brand: Flowmaster
• part type: Exhaust Muffler
• manufacturer part number: L159788
• fitment type: Performance/custom
• material: Stainless Steel
• shape: Oval
• tip diameter: In
• color: Gray
• inlet connection type: Pipe Connection
• mount type: Uses New Hangers
• body width: 9.75
• tip material: No Tip
• sound level: Moderate Sound
• upc: 743593990333

shipping mufflermooch:

• service: Standard, Expedited
• type: Fixed
• transit: 3-8 Days
• class: Standard, Expedited
• cost: $0.00

returns mufflermooch:

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

payments mufflermooch:

• other
• credit card: Mastercard
• wallet: Apple-pay

general mufflermooch:

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

offer mufflermooch:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: November 23, 2025
• quantity: 5
• best offers: True

seller mufflermooch:

• # reviews: 17995
• rating: 98.5%

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