FLOWMASTER L158783 Exhaust Muffler 743593980280 79-80

( Brand: Flowmaster ), ( Part Type: Exhaust Muffler ), ( Manufacturer Part Number: L158783 ), ( 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: 743593980280 )

Review FLOWMASTER Exhaust Muffler 79-80 Gmc fits C3500

Introducing the Flowmaster L158783 Exhaust Muffler, specially designed for the 1979-1980 GMC C3500 pickup trucks. This muffler is an excellent upgrade for those seeking to enhance their vehicle's exhaust system performance and sound.

The L158783 muffler is part of Flowmaster's 40 Series, which offers a perfect balance between performance and a subtle, yet deep exhaust note. This muffler is constructed using 16-gauge aluminized steel, ensuring durability and resistance to corrosion. Its compact design fits neatly into the exhaust system without taking up too much space or adding unnecessary weight.

One of the standout features of this muffler is its unique internal design, which includes a series of perforated stainless steel tubing. These tubes allow for maximum exhaust flow, reducing backpressure and increasing power output. Simultaneously, the tubes provide sound absorption, resulting in a rich, deep exhaust note that is sure to please.

The L158783 muffler is also CARB-approved, making it an excellent choice for those who reside in California or other states with strict emissions regulations. It comes with all necessary hardware for installation, ensuring a straightforward and hassle-free experience.

In summary, the Flowmaster L158783 Exhaust Muffler is an excellent choice for those seeking to boost their 1979-1980 GMC C3500's exhaust performance and add a subtle yet deep exhaust note. Its durable construction, compact design, and CARB approval make it a top pick for enthusiasts and daily drivers alike.

Pros and Cons of Buying Flowmaster L158783 Exhaust Muffler for 79-80 GMC C3500

The Flowmaster L158783 exhaust muffler is a popular choice among GMC C3500 truck owners for its performance and sound enhancement. In this analysis, we will discuss the key benefits and potential drawbacks of investing in this aftermarket muffler.

1. Enhanced Performance: The Flowmaster muffler is designed to improve the overall performance of the exhaust system. It allows for better exhaust flow, resulting in a more efficient combustion process and increased power output.

2. Improved Fuel Economy: Due to the more efficient exhaust flow, some users have reported improved fuel economy with the installation of the Flowmaster muffler.

3. Distinctive Sound: The muffler is known for its unique and aggressive exhaust note, which is a popular choice among truck enthusiasts.

4. Durability: Flowmaster is a well-respected brand in the automotive aftermarket industry, known for its high-quality products. The L158783 muffler is no exception, with a robust design that ensures longevity.

5. Easy Installation: The muffler comes with all necessary hardware for installation, making it a relatively straightforward process for most DIY enthusiasts.

1. Cost: The Flowmaster L158783 muffler is a premium aftermarket part, and its price tag may be a deterrent for some buyers.

2. Loudness: The primary reason for purchasing a Flowmaster muffler is its aggressive exhaust note. However, this may not be desirable for all users, especially those who value a quieter ride.

3. Potential Increase in Emissions: Some users have reported an increase in exhaust emissions after installing a Flowmaster muffler. This may be a concern for those who live in areas with strict emissions regulations.

The Flowmaster L158783 exhaust muffler offers several benefits for GMC C3500 truck owners, including improved performance, potential fuel economy gains, a distinctive sound, and durability. However, it also comes with potential drawbacks, such as a higher cost, increased loudness, and potential emissions concerns. Ultimately, the decision to purchase this aftermarket muffler depends on an individual's priorities and preferences.

If you are a GMC C3500 truck owner who values performance, sound, and a robust exhaust system, the Flowmaster L158783 muffler is an excellent choice. However, if you prioritize a quieter ride, or if you are concerned about emissions, you may want to consider other options. It is essential to weigh the pros and cons carefully before making your purchase.

part # l158783 price

• $297.65

specifications mufflermooch:

• for models: C3500
• for makes: Gmc
• brand: Flowmaster
• part type: Exhaust Muffler
• manufacturer part number: L158783
• 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: 743593980280

general mufflermooch:

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

payments mufflermooch:

• wallet: Paypal
• credit card: Discover
• other

seller mufflermooch:

• rating: 98.7%
• # reviews: 18126

returns mufflermooch:

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

shipping mufflermooch:

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

offer mufflermooch:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: January 29, 2026
• best offers: True
• quantity: 3

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