Flowmaster 817409 Header-back System 409S- Dual Rear Exit - American Thunder® - Aggressive 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.
Features:
- Mandrel bent 16 gauge 409 stainless tubing
- Aggressive and powerful 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: Stainless Steel
- Muffler part number: Kit Only
- Muffler quantity: 2
- Muffler series: Super 40 Series
- Outlet diameter (inches): 2.50
- Single/Dual: Dual
- Sound level: Aggressive Sound
- System type: Header-back System
- Tip quantity: None
- Tubing diameter (inches): 2.50
Fitments:
- 1970-1972 Buick GS Base V8, 5.7L
- 1968-1969 Buick GS 350 Base V8, 5.7L
- 1968-1969 Buick GS 400 Base V8, 6.6L
- 1970-1972 Buick GS 455 Base V8, 7.5L
- 1970 Buick GS 455 GSX V8, 7.5L
- 1970-1972 Buick Skylark 350 V8, 5.7L
- 1971-1972 Buick Skylark Base V8, 7.5L
- 1968-1972 Buick Skylark Base V8, 5.7L
- 1968-1972 Buick Skylark Custom V8, 5.7L
- 1968 Buick Skylark Custom V8, 6.6L
- 1970-1972 Buick Skylark Custom V8, 7.5L
- 1971-1972 Chevrolet Chevelle Base V8, 7.4L
- 1970-1972 Chevrolet Chevelle Base V8, 5.7L
- 1970 Chevrolet Chevelle Base V8, 6.6L
- 1970-1972 Chevrolet Chevelle Base V8, 6.6L
- 1968-1972 Chevrolet Chevelle Base V8, 5.0L
- 1970-1971 Chevrolet Chevelle Malibu V8, 6.6L
- 1970-1972 Chevrolet Chevelle Malibu V8, 7.4L
- 1968-1970 Chevrolet Chevelle Malibu V8, 6.5L
- 1970-1972 Chevrolet Chevelle Malibu V8, 6.6L
- 1968-1972 Chevrolet Chevelle Malibu V8, 5.0L
- 1968 Chevrolet Chevelle Malibu V8, 5.4L
- 1969-1972 Chevrolet Chevelle Malibu V8, 5.7L
- 1972 Chevrolet Chevelle SS V8, 6.6L
- 1971 Chevrolet Chevelle SS V8, 6.6L
- 1968-1970 Chevrolet Chevelle SS V8, 6.5L
- 1972 Chevrolet Chevelle SS V8, 5.7L
- 1972 Chevrolet Chevelle SS V8, 6.6L
- 1972 Chevrolet Chevelle SS V8, 7.4L
- 1968-1970 Oldsmobile 442 Base V8, 5.7L
- 1968-1969 Oldsmobile 442 Base V8, 6.6L
- 1968-1971 Oldsmobile 442 Base V8, 7.5L
- 1968-1972 Oldsmobile Cutlass Base V8, 5.7L
- 1968 Oldsmobile Cutlass Base V8, 6.6L
- 1970-1972 Oldsmobile Cutlass Base V8, 7.5L
- 1968-1972 Pontiac Grand Prix Base V8, 6.6L
- 1968-1969 Pontiac Grand Prix Base V8, 7.0L
- 1970-1972 Pontiac Grand Prix Base V8, 7.5L
- 1968-1972 Pontiac GTO Base V8, 6.6L
- 1970 Pontiac GTO Base V8, 5.7L
- 1970-1972 Pontiac GTO Base V8, 7.5L
- 1970 Pontiac GTO The Judge V8, 6.6L
- 1970-1971 Pontiac GTO The Judge V8, 7.5L
- 1968-1972 Pontiac LeMans Base V8, 5.7L
- 1968-1972 Pontiac LeMans Base V8, 6.6L
- 1968-1969 Pontiac LeMans Base V8, 7.0L
- 1970-1972 Pontiac LeMans Base V8, 7.5L
- 1970-1971 Pontiac LeMans Sport V8, 6.6L
- 1970-1972 Pontiac LeMans Sport V8, 7.5L
- 1970-1971 Pontiac LeMans Sport V8, 5.7L
- 1971 Pontiac LeMans T37 V8, 5.7L
Note: 1968 to 1972 GM A-Body with a V-8 engine.
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