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  3. FLOWMASTER L159789

FLOWMASTER L159789 Exhaust Muffler 743593990340

fits model: F-350. make: Ford. year: 1999–2004.

L159789 Flowmaster Exhaust Muffler For Ford F-350 Super Duty 1999-2004

( Brand: Flowmaster ), ( Part Type: Exhaust Muffler ), ( Manufacturer Part Number: L159789 ), ( 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: 743593990340 )

Review FLOWMASTER Exhaust Muffler Ford Super Duty fits F-350 1999–2004

Introducing the Flowmaster L159789 Exhaust Muffler, a high-performance upgrade for your Ford F-350 (1999-2004). This muffler, part of Flowmaster's renowned 40-series line, is designed to deliver an exceptional exhaust experience with its deep, powerful sound and improved performance.

The L159789 is a free-flowing muffler that utilizes Flowmaster's proprietary "Cannons" design. This unique feature consists of a series of parallel, perforated tubes that create a straight-through exhaust flow, reducing backpressure and allowing for better engine breathing. The result is increased horsepower and torque, making your Ford F-350 more responsive and powerful.

The L159789 muffler is constructed from high-quality, mandrel-bent 16-gauge aluminized steel, ensuring durability and corrosion resistance. The aluminized steel coating also provides an attractive, long-lasting finish that will complement the appearance of your truck.

The muffler's design allows for a smooth, uninterrupted exhaust flow while minimizing noise levels. However, it still produces a rich, deep exhaust note that is sure to turn heads. The sound is a result of the muffler's internal core, which is made from high-density fiberglass packing. This material provides sound absorption while maintaining the free-flowing design.

Installation of the L159789 muffler is a straightforward process, as it is designed to fit directly into the factory exhaust system with no modifications required. The muffler comes with all necessary hardware for installation and includes a gasket to ensure a secure fit.

Upgrading your Ford F-350's exhaust system with the Flowmaster L159789 muffler not only improves performance but also enhances the overall driving experience. The deep, powerful sound, increased horsepower, and improved torque make this a worthwhile investment for any Ford F-350 (1999-2004) owner looking to boost their vehicle's performance and personality.

Flowmaster L159789 Exhaust Muffler for Ford F-350 (1999-2004): Pros and Cons

The Flowmaster L159789 exhaust muffler is a popular aftermarket exhaust component for Ford F-350 models from 1999 to 2004. This muffler is known for its performance and sound enhancements. In this analysis, we will discuss the pros and cons of installing a Flowmaster L159789 exhaust muffler on a Ford F-350 (1999-2004).

Pros:

1. Improved Engine Performance: The Flowmaster L159789 exhaust muffler is designed to enhance the flow and reduce backpressure, which improves engine performance. This results in increased horsepower and torque.

2. Enhanced Exhaust Sound: The muffler is known for its unique and distinctive exhaust note. It provides a deep, rumbling sound that is preferred by many truck enthusiasts.

3. Durability: Flowmaster mufflers are made from high-quality materials, including stainless steel and aluminized steel. This ensures that the muffler is durable and can withstand the rigors of heavy-duty use.

4. Easy Installation: The muffler comes with all necessary hardware, making it easy to install. The installation process is relatively straightforward, and most people can do it themselves.

Cons:

1. Increased Noise Level: The primary downside of installing a Flowmaster L159789 exhaust muffler is the increased noise level. While some people enjoy the loud exhaust note, others may find it too loud for their taste.

2. Cost: The muffler can be quite expensive compared to stock mufflers. The cost of the muffler, installation, and any necessary modifications can add up.

3. Emissions: Some people have reported issues with emissions after installing a Flowmaster exhaust system. It is essential to ensure that the exhaust system is compliant with local and federal emissions regulations.

Conclusion:

The Flowmaster L159789 exhaust muffler offers several advantages for Ford F-350 owners, including improved engine performance, enhanced exhaust sound, durability, and ease of installation. However, it also comes with some drawbacks, such as increased noise level, cost, and potential emissions issues. Ultimately, the decision to install a Flowmaster L159789 exhaust muffler depends on personal preferences and priorities. If you value performance, sound, and durability and are willing to pay the price, then this muffler could be an excellent choice for you. However, if you are concerned about noise level or emissions, then you may want to consider other options.

Recommendation:

If you decide to install a Flowmaster L159789 exhaust muffler on your Ford F-350 (1999-2004), we recommend that you purchase it from a reputable dealer or retailer to ensure that you receive a genuine and high-quality product. Additionally, ensure that the installation is done correctly to avoid any potential issues with emissions or noise level. Finally, consider investing in a high-quality catalytic converter to help reduce emissions and maintain compliance with emissions regulations.

part # l159789 prices

  • $228.40-$230.26

specifications mufflermooch:

  • for models: F-350
  • for makes: Ford
  • for years: 1999-2004
  • brand: Flowmaster
  • part type: Exhaust Muffler
  • manufacturer part number: L159789
  • 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: 743593990340

shipping mufflermooch:

  • cost: $0.00
  • class: Standard, Expedited
  • transit: 2-6 Days
  • service: Standard, Expedited
  • type: Fixed

general mufflermooch:

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

seller mufflermooch:

  • # reviews: 17438
  • rating: 98.7%

offer mufflermooch:

  • options: Ship-to-home
  • availability: In Stock
  • best offers: True
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  • quantity: 5
  • started: March 25, 2025

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for models: f-350, for makes: ford, for years: 1999-2004, part type: exhaust muffler, fitment type: performance/custom, shape: oval, tip diameter: in, inlet connection type: pipe connection, mount type: uses new hangers, body width: 9.75, tip material: no tip, sound level: moderate sound,
category: auto parts > car truck parts accessories > exhaust emission systems > mufflers resonators, color: gray, material: stainless steel, sku: 4928953040745613,

Flowmaster L159789 Is Similar To:

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2 offers $228.40–$230.26 USD
  • Offer #1: $228.40 price + free delivery = $228.40* total. Mount Type: Uses New Hangers (Not Included) PRODUCT LINE: FlowMaster MufflerVERIFIED FIT: Ford F-350 Super Duty 1999-2004 (1999 2000 2001 2002 2003 2004)SPECIFICATIONS: Outlet Diameter (in): 3.FREE SHIPPING
  • Offer #2: $230.26 price + free delivery = $230.26* total.FREE SHIPPING