Flowmaster American Thunder Header-Back Exhaust - Mustang 1964-1966 | GBP Performance
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Flowmaster

Flowmaster | American Thunder Header-Back Exhaust - Mustang 1964-1966

817273
Flowmaster 817273 – American Thunder Header-Back Exhaust, dual rear exit, Super 44 mufflers, 4 in. polished stainless tips, Ford Mustang
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Flowmaster – American Thunder Header-Back Exhaust System

Description

The Flowmaster American Thunder Header-Back Exhaust System (part# 817273) is designed for the Ford Mustang. This true dual rear exit system uses 2.50 in. mandrel-bent 409 stainless steel tubing, two specially-tuned Super 44 Series™ mufflers and two 4 in. polished stainless tips for a moderate exterior exhaust tone. Also includes crossover pipes, clamps, hangers and hardware for easy bolt-on installation. Dyno-tuned for maximum performance.

Specifications

  • Brand: Flowmaster
  • Part Number: 817273
  • Fitment: Ford Mustang (See Application Section)
  • Series: American Thunder
  • System Type: Header-Back
  • Configuration: Dual / Dual Rear Exit
  • Tubing Diameter: 2.500 in.
  • Material: 409 Stainless Steel, mandrel-bent
  • Mufflers: Super 44 Series™, qty: 2
  • Tips: 4 in. polished stainless, qty: 2
  • Sound Level: Moderate
  • Condition: New
  • Sold and shipped by: GBP Performance

 

Note:

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Fitment (Application)

MakeModelYearsEngineNotes
FordMustang Base1964–1965L6 2.8L
FordMustang Base1964–1966L6 3.3L
FordMustang Base1964–1965V8 4.3L
FordMustang Base1964V8 4.7LNote 1: Coupe (2 Door)
FordMustang Base1965–1966V8 4.7LNote 2: Coupe (2 Door); Fastback
Flowmaster
817273
700042024605

Data sheet

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