The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
  • Durable Fully Welded 16ga Aluminized Steel
  • 3 Year Limited Warranty
  • Aggressive And Powerful Exterior Exhaust Tone
  • Notable Interior Resonance
  • No Internal Packing To Blowout
  • The Original Two Chamber Design
  • Premium Flowmaster Quality
  • Excellent Street/Strip And Off Road Application

Flowmaster operates the only exhaust Research & Design facilities of its kind in the world, centered around the SuperFlow SF-7100 engine dynamometer complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dyno's. Through use of these dyno's, Flowmasters engineering staff can track the complete engine cycle in millionths of a second and can obtain exact technical data of each degree of cam rotation, from induction to the tip of the exhaust system, while also showing the power numbers that really matter, the power numbers to the ground. Flowmaster also utilizes Spectrum Analyzers to fine tune the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones. Flowmasters product line includes exhaust products for Performance Street, Muscle cars, Trucks, Street Rods, RV's, Motorhomes, and all types of race applications. With over 400 different muffler models, 370+ exhaust systems and numerous exhaust accessories available, Flowmaster offers you the choice of sound to fit your sound preference from wild to mild and of your specific vehicle needs. Call our experienced tech staff for live help and detailed information regarding your vehicles. With Ray still active and hands on with the R&D department in the development, not only of new exhaust products, but also with new technologies currently being tested in third and new R&D facility, the future looks to be very exciting indeed.

Attributes
Body Height (in.) 4
Body Length (in.) 13
Body Width (in.) 9.75
Country of Origin (Primary) US
Emission Code Legal US
Harmonized Tariff Code (Schedule B) 8708925000
Hazardous Material Code N
Inlet Connection Type Pipe Connection
Inlet Position Offset
Inlet Size (in.) 2.5
Inlet Type Single Offset Inlet
Life Cycle Status Code 2
Life Cycle Status Description Available to Order
Material Aluminized Steel
MSDS Required Flag N
Muffler Count 1
Muffler Type Reflection
NAFTA Preference Criterion Code B
Outlet Position Offset
Outlet Size (in.) 2.5
Outlet Type Single Offset Outlet
Overall Length (in.) 19
Position N/A
Shape Oval
Sound Level Aggressive Sound
Warranty Time 90

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Flowmaster 42543 40 Series™ Muffler

  • $83.99