50 Delta Muffler 409S - 2.50 Offset In / 2.50 Same Side Out - Moderate Sound

50 Series Delta Flow

PART# 842554

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Universal Muffler – Not a direct fit. Some adaptation required.


These systems are designed to directly replace original mufflers using factory hangers and connections. With easy fit in mind, these units utilize mandrel bent tubing (where applicable) for maximum performance and include specially selected mufflers. Direct-fit mufflers deliver a moderate interior and exterior tone and are suited to the enthusiast who wants their performance to be heard without breaking the bank. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.


  • Improved Horsepower, Torque and Engine Efficiency
  • Excellent choice for Street Rod cars and trucks
  • Mild interior resonance
  • Moderate Sound


Body Height (in)4
Body Length (in)17
Body Width (in)9.75
Inlet Diameter (in)2.5
Inlet PositionOffset
MaterialStainless Steel
Muffler Series50 Series Delta Flow
Outlet Diameter (in)2.5
Outlet PositionSame Side
Product TypeStreet Mufflers
Sound LevelModerate Sound
Part Number842554

Tech Resources

Universal Muffler – Not a direct fit. Some adaptation required.

    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.