Flowmaster 17273 Header-Back System for 1964-1966 Ford Mustang

Price:   $561.97

Flowmaster 17273 Header-Back System - Dual Rear Exit - American Thunder® - Moderate Sound

For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. 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.


  • Mandrel bent 16 gauge aluminized tubing
  • Moderate exterior exhaust tone
  • Includes hangers and hardware for easy installation
  • Header back system
  • Premium Flowmaster quality

Product Specification:

  • 2WD/4WD: 2WD
  • Exhaust series: American Thunder®
  • Exit Position: Dual Rear Exit
  • Heat shield: None
  • Inlet diameter (inches): 2.50
  • Material: Aluminized Steel
  • Muffler part number: 942541
  • Muffler quantity: 2
  • Muffler series: 40 Series Delta Flow
  • Outlet diameter (inches): 2.50
  • Single/dual: Dual
  • Sound level: Moderate Sound
  • System type: Header-back System
  • Tip diameter (inches): 2.50
  • Tip quantity: 2
  • Tubing diameter (inches): 2.50


  • 1964-1966 Ford Mustang Base V8, 4.7L

Note: Does Not Fit GT or Convertibles.
1964 to 1966 Ford Mustang (not GT) with a V8 engine, does not fit convertibles.

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Add to Cart:

  • Model: 17273
  • Shipping Weight: 69lbs
  • 3 Units in Stock
  • Manufactured by: Flowmaster

This product was added to our catalog on Thursday 21 May, 2015.