1. Mufflers & Resonators Deals
  2. sku: 6546261233629613
  3. FLOWMASTER L158781

FLOWMASTER L158781 Exhaust Muffler 743593980266

fits model: F-150. make: Ford. year: 1998–2008.

L158781 Flowmaster Exhaust Muffler For Ford F-150 98-08

( Brand: Flowmaster ), ( Part Type: Exhaust Muffler ), ( Manufacturer Part Number: L158781 ), ( Fitment Type: Performance/custom ), ( Material: Aluminized Steel ), ( Shape: Oval ), ( Outlet Diameter: In ), ( Color: Gray ), ( Inlet Connection Type: Pipe Connection ), ( Mount Type: Uses New Hangers ), ( Body Width: 10 ), ( Tip Material: No Tip ), ( Sound Level: Mild Sound ), ( UPC: 743593980266 )

Review FLOWMASTER Exhaust Muffler Ford fits F-150 1998–2008

The Flowmaster L158781 Exhaust Muffler is a high-performance replacement part designed specifically for the Ford F-150 pickup trucks from the model years 1998 to 2008. This muffler is part of Flowmaster's popular 40 Series line, which is renowned for its deep, throaty exhaust note and unmatched power gains.

This muffler features a tubular design with a 2.5-inch inlet and 2.5-inch outlet, making it a direct fit for the stock exhaust system on your Ford F-150. The internal construction of the L158781 muffler consists of a series of flow-enhancing chambered internal design, which reduces backpressure and maximizes exhaust flow. This results in improved engine performance, increased horsepower, and enhanced torque.

The exterior of the muffler boasts a durable, high-temperature coating that provides excellent heat protection and a sleek, modern appearance. The muffler's compact size allows for easy installation, and it is made from heavy-duty aluminized steel that will withstand the rigors of off-road driving and daily use.

The Flowmaster L158781 Exhaust Muffler is designed to meet or exceed OEM performance standards, ensuring a seamless integration with your Ford F-150's exhaust system. It is also CARB-compliant, making it a legal option for use in California and other states with strict emissions regulations.

In summary, the Flowmaster L158781 Exhaust Muffler is a high-quality, high-performance replacement part that delivers improved engine performance, a deep, powerful exhaust note, and a sleek, modern appearance. It is a direct fit for Ford F-150 pickup trucks from 1998 to 2008, and it is made from durable, heat-resistant materials that will withstand the demands of off-road driving and daily use.

Pros and Cons of Buying Flowmaster L158781 Exhaust Muffler for Ford F-150 (98-08)

The Flowmaster L158781 exhaust muffler is a popular choice among Ford F-150 (98-08) owners who are looking to enhance their vehicle's performance and sound. In this analysis, we will discuss the pros and cons of investing in this aftermarket muffler.

Pros:

1. Enhanced engine performance: The Flowmaster L158781 muffler is designed to allow for better exhaust flow, resulting in increased horsepower and torque. This can lead to improved acceleration and overall performance.

2. Distinctive sound: Flowmaster is renowned for its unique exhaust notes. The L158781 muffler provides a deep, resonant tone that is pleasing to many drivers.

3. Durability: This muffler is constructed from high-quality materials, including stainless steel, ensuring long-lasting performance and resistance to corrosion.

4. Easy installation: The muffler comes with all necessary hardware for installation, making the process relatively straightforward for most DIY enthusiasts.

Cons:

1. Cost: The Flowmaster L158781 muffler is more expensive than some OEM alternatives. However, the increased performance and desirable sound may justify the investment for some.

2. Loudness: Depending on personal preference, the muffler may be considered too loud for daily driving. Some buyers may prefer a quieter exhaust note for a more discreet driving experience.

3. Fitment concerns: While the muffler generally fits well, there have been reports of minor clearance issues with certain components, such as the fuel tank or suspension.

Conclusion:

The Flowmaster L158781 exhaust muffler offers significant improvements in both performance and sound quality for Ford F-150 (98-08) owners. However, its cost and potential loudness may be drawbacks for some buyers. Ultimately, the decision to purchase this muffler depends on individual preferences and priorities.

Recommendation:

For those who value increased performance, a distinctive exhaust note, and aren't concerned about the cost or potential loudness, the Flowmaster L158781 exhaust muffler is an excellent choice. On the other hand, for those who prioritize a quieter driving experience or have a tighter budget, alternative options may be worth considering.

part # l158781 prices

  • $297.65-$300.07

specifications mufflermooch:

  • for models: F-150
  • for makes: Ford
  • for years: 1998-2008
  • brand: Flowmaster
  • part type: Exhaust Muffler
  • manufacturer part number: L158781
  • fitment type: Performance/custom
  • material: Aluminized Steel
  • shape: Oval
  • outlet diameter: In
  • color: Gray
  • inlet connection type: Pipe Connection
  • mount type: Uses New Hangers
  • body width: 10
  • tip material: No Tip
  • sound level: Mild Sound
  • upc: 743593980266

payments mufflermooch:

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

general mufflermooch:

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

returns mufflermooch:

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

shipping mufflermooch:

  • service: Standard, Expedited
  • type: Fixed
  • transit: 3-6 Days
  • cost: $0.00
  • class: Standard, Expedited

seller mufflermooch:

  • rating: 98.4%
  • # reviews: 17675

offer mufflermooch:

  • started: June 6, 2025
  • quantity: 3
  • availability: In Stock
  • best offers: True
  • sold: 0
  • options: Ship-to-home
for models: f-150, for makes: ford, for years: 1998-2008, part type: exhaust muffler, fitment type: performance/custom, shape: oval, outlet diameter: in, inlet connection type: pipe connection, mount type: uses new hangers, body width: 10, tip material: no tip, sound level: mild sound,
category: auto parts > car truck parts accessories > exhaust emission systems > mufflers resonators, color: gray, material: aluminized steel, sku: 6546261233629613,

Flowmaster L158781 Is Similar To:

mufflermooch logo
2 offers $297.65–$300.07 USD
  • Offer #1: $297.65 price + free delivery = $297.65* total. Mount Type: Uses New Hangers (Not Included) PRODUCT LINE: FlowMaster 70 Series Big Block II MufflersVERIFIED FIT: Ford F-150 1998-2008 (1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008)SPECIFICATIONS: Outlet Diameter (in): 2.5.FREE SHIPPING
  • Offer #2: $300.07 price + free delivery = $300.07* total.FREE SHIPPING