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Flowmaster 817200 - American Thunder Header Back Exhaust System

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$839.95

$933.95

You save: $94.00 (10%) off MSRP

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  1. 1973 Pontiac LeMans Safari 5.7L V8 cid:350 cc:5733
  2. 1972 Buick Skylark Custom 5.7L V8 cid:350
  3. 1972 Pontiac LeMans 5.7L V8 cid:350
  4. 1972 Pontiac GTO 7.5L V8 cid:455 cc:7456
  5. 1972 Pontiac GTO 7.5L V8 cid:455
  6. 1972 Chevrolet Chevelle Base 7.4L V8 cid:454 cc:7441
  7. 1972 Chevrolet Chevelle Base 7.4L V8 cid:454 cc:7439
  8. 1972 Chevrolet Chevelle Base 7.4L V8 cid:454
  9. 1972 Chevrolet Chevelle Base 6.6L V8 cid:402 cc:6588
  10. 1972 Oldsmobile Cutlass 7.5L V8 cid:455
  11. 1972 Pontiac LeMans 5.7L V8 cid:350 cc:5733
  12. 1972 Pontiac LeMans 7.5L V8 cid:455 cc:7457
  13. 1972 Pontiac LeMans 7.5L V8 cid:455 cc:7456
  14. 1972 Pontiac LeMans 7.5L V8 cid:455
  15. 1972 Pontiac LeMans 6.6L V8 cid:400 cc:6555
  16. 1972 Pontiac GTO 6.6L V8 cid:400 cc:6555
  17. 1972 Pontiac GTO 6.6L V8 cid:400
  18. 1972 Pontiac Grand Prix
  19. 1972 Oldsmobile Cutlass Supreme 7.5L V8 cid:455 cc:7456
  20. 1972 Oldsmobile Cutlass Supreme 7.5L V8 cid:455
  21. 1972 Oldsmobile Cutlass Supreme 5.7L V8 cid:350
  22. 1972 Oldsmobile Cutlass 7.5L V8 cid:455 cc:7456
  23. 1972 Chevrolet El Camino 6.6L V8 cid:400
  24. 1972 Oldsmobile Cutlass 5.7L V8 cid:350
  25. 1972 Chevrolet Monte Carlo 7.4L V8 cid:454 cc:7441
  26. 1972 Chevrolet Monte Carlo 7.4L V8 cid:454 cc:7439
  27. 1972 Chevrolet Monte Carlo 7.4L V8 cid:454
  28. 1972 Chevrolet Monte Carlo 6.6L V8 cid:402 cc:6588
  29. 1972 Chevrolet Monte Carlo 6.6L V8 cid:400
  30. 1972 Chevrolet Monte Carlo 5.7L V8 cid:350
  31. 1972 Chevrolet El Camino 7.4L V8 cid:454 cc:7441
  32. 1972 Chevrolet El Camino 7.4L V8 cid:454 cc:7439
  33. 1972 Chevrolet El Camino 7.4L V8 cid:454
  34. 1972 Chevrolet El Camino 6.6L V8 cid:402 cc:6588
  35. 1972 Chevrolet Chevelle Malibu 5.7L V8 cid:350
  36. 1972 Chevrolet El Camino 5.7L V8 cid:350
  37. 1972 Chevrolet El Camino 5.0L V8 cid:307 cc:5031
  38. 1972 Chevrolet El Camino 5.0L V8 cid:307
  39. 1972 Chevrolet El Camino 4.1L L6 cid:250 cc:4098
  40. 1972 Chevrolet El Camino 4.1L L6 cid:250 cc:4097
  41. 1972 Chevrolet El Camino 4.1L L6 cid:250
  42. 1972 Chevrolet Chevelle Malibu 7.4L V8 cid:454 cc:7441
  43. 1972 Chevrolet Chevelle Malibu 7.4L V8 cid:454 cc:7439
  44. 1972 Chevrolet Chevelle Malibu 7.4L V8 cid:454
  45. 1972 Chevrolet Chevelle Malibu 6.6L V8 cid:402 cc:6588
  46. 1972 Chevrolet Chevelle Malibu 6.6L V8 cid:400
  47. 1972 Chevrolet Chevelle Base 6.6L V8 cid:400
  48. 1972 Chevrolet Chevelle Base 5.7L V8 cid:350
  49. 1972 Buick Skylark Base 5.7L V8 cid:350
  50. 1972 Buick Skylark 350 5.7L V8 cid:350
  51. 1971 Chevrolet El Camino SS 7.4L V8 cid:454
  52. 1971 Chevrolet El Camino Base 6.6L V8 cid:400
  53. 1971 Buick Skylark Base 7.5L V8 cid:455
  54. 1971 Buick Skylark Base 7.5L V8 cid:455 cc:7456
  55. 1971 Buick Skylark Custom 5.7L V8 cid:350
  56. 1971 Buick Skylark Custom 7.5L V8 cid:455
  57. 1971 Buick Skylark Custom 7.5L V8 cid:455 cc:7456
  58. 1971 Chevrolet Chevelle Malibu 5.7L V8 cid:350
  59. 1971 Chevrolet Chevelle Malibu 6.6L V8 cid:400
  60. 1971 Chevrolet Chevelle Malibu 6.6L V8 cid:402 cc:6588
  61. 1971 Chevrolet Chevelle Malibu 7.4L V8 cid:454
  62. 1971 Chevrolet Chevelle Malibu 7.4L V8 cid:454 cc:7439
  63. 1971 Chevrolet Chevelle Malibu 7.4L V8 cid:454 cc:7441
  64. 1971 Chevrolet Chevelle SS 6.6L V8 cid:400
  65. 1971 Chevrolet Chevelle Base 5.7L V8 cid:350
  66. 1971 Chevrolet Chevelle Base 7.4L V8 cid:454
  67. 1971 Chevrolet Chevelle Base 7.4L V8 cid:454 cc:7439
  68. 1971 Chevrolet Chevelle Base 7.4L V8 cid:454 cc:7441
  69. 1971 Chevrolet El Camino Base 4.1L L6 cid:250
  70. 1971 Chevrolet El Camino Base 4.1L L6 cid:250 cc:4097
  71. 1971 Chevrolet El Camino Base 4.1L L6 cid:250 cc:4098
  72. 1971 Chevrolet El Camino Base 6.6L V8 cid:402 cc:6588
  73. 1971 Chevrolet El Camino Base 7.4L V8 cid:454 cc:7439
  74. 1971 Chevrolet El Camino SS 5.7L V8 cid:350
  75. 1971 Chevrolet El Camino SS 6.6L V8 cid:400
  76. 1971 Chevrolet El Camino SS 6.6L V8 cid:402 cc:6588
  77. 1971 Buick Skylark Base 5.7L V8 cid:350
  78. 1971 Chevrolet El Camino SS 7.4L V8 cid:454 cc:7439
  79. 1971 Chevrolet El Camino SS 7.4L V8 cid:454 cc:7441
  80. 1971 Chevrolet Chevelle SS 6.6L V8 cid:402 cc:6588
  81. 1971 Chevrolet Monte Carlo 6.6L V8 cid:400
  82. 1971 Chevrolet Monte Carlo 6.6L V8 cid:402 cc:6588
  83. 1971 Chevrolet Monte Carlo 7.4L V8 cid:454
  84. 1971 Chevrolet Monte Carlo 7.4L V8 cid:454 cc:7439
  85. 1971 Chevrolet Monte Carlo 7.4L V8 cid:454 cc:7441
  86. 1971 Oldsmobile 442 7.5L V8 cid:455
  87. 1971 Oldsmobile 442 7.5L V8 cid:455 cc:7456
  88. 1971 Oldsmobile Cutlass 5.7L V8 cid:350
  89. 1971 Chevrolet Monte Carlo 5.7L V8 cid:350
  90. 1971 Oldsmobile Cutlass 7.5L V8 cid:455
  91. 1971 Oldsmobile Cutlass 7.5L V8 cid:455 cc:7456
  92. 1971 Oldsmobile Cutlass Supreme 5.7L V8 cid:350
  93. 1971 Oldsmobile Cutlass Supreme 7.5L V8 cid:455 cc:7456
  94. 1971 Pontiac Grand Prix
  95. 1971 Pontiac GTO 6.6L V8 cid:400
  96. 1971 Pontiac GTO 6.6L V8 cid:400 cc:6555
  97. 1971 Pontiac GTO 7.5L V8 cid:455
  98. 1971 Pontiac GTO 7.5L V8 cid:455 cc:7456
  99. 1971 Oldsmobile Cutlass Supreme 7.5L V8 cid:455
  100. 1971 Chevrolet El Camino Base 5.7L V8 cid:350
  101. 1971 Chevrolet El Camino Base 5.0L V8 cid:307 cc:5031
  102. 1971 Chevrolet El Camino Base 5.0L V8 cid:307
  103. 1970 Oldsmobile 442 7.5L V8 cid:455
  104. 1970 Oldsmobile 442 7.5L V8 cid:455 cc:7456
  105. 1970 Oldsmobile Cutlass 5.7L V8 cid:350
  106. 1970 Pontiac GTO 7.5L V8 cid:455
  107. 1970 Oldsmobile Cutlass 7.5L V8 cid:455
  108. 1970 Oldsmobile Cutlass 7.5L V8 cid:455 cc:7456
  109. 1970 Pontiac Grand Prix
  110. 1970 Pontiac GTO 6.6L V8 cid:400
  111. 1970 Pontiac GTO 6.6L V8 cid:400 cc:6555
  112. 1970 Pontiac GTO 7.5L V8 cid:455 cc:7456
  113. 1970 Chevrolet El Camino Base 6.6L V8 cid:400
  114. 1970 Chevrolet Monte Carlo 7.4L V8 cid:454 cc:7439
  115. 1970 Chevrolet Monte Carlo 7.4L V8 cid:454
  116. 1970 Chevrolet Monte Carlo 6.6L V8 cid:402 cc:6588
  117. 1970 Chevrolet Monte Carlo 6.6L V8 cid:400
  118. 1970 Chevrolet Monte Carlo 5.7L V8 cid:350
  119. 1970 Chevrolet El Camino Base 6.6L V8 cid:402 cc:6588
  120. 1970 Chevrolet Monte Carlo 7.4L V8 cid:454 cc:7441
  121. 1970 Chevrolet El Camino Base 6.5L V8 cid:396
  122. 1970 Chevrolet El Camino Base 5.7L V8 cid:350
  123. 1970 Chevrolet El Camino SS 7.4L V8 cid:454 cc:7441
  124. 1970 Chevrolet El Camino SS 7.4L V8 cid:454 cc:7439
  125. 1970 Chevrolet El Camino SS 6.6L V8 cid:402 cc:6588
  126. 1970 Chevrolet Chevelle Malibu 5.0L V8 cid:307 cc:5031
  127. 1970 Chevrolet Chevelle Malibu 5.7L V8 cid:350
  128. 1970 Chevrolet Chevelle Malibu 6.5L V8 cid:396
  129. 1970 Chevrolet Chevelle Malibu 6.6L V8 cid:400
  130. 1970 Chevrolet Chevelle Malibu 6.6L V8 cid:402 cc:6588
  131. 1970 Chevrolet Chevelle Malibu 7.4L V8 cid:454
  132. 1970 Chevrolet Chevelle Malibu 7.4L V8 cid:454 cc:7439
  133. 1970 Chevrolet Chevelle Malibu 7.4L V8 cid:454 cc:7441
  134. 1970 Chevrolet Chevelle SS 6.5L V8 cid:396
  135. 1970 Chevrolet El Camino Base 4.1L L6 cid:250
  136. 1970 Chevrolet Chevelle Base 6.6L V8 cid:400
  137. 1970 Chevrolet Chevelle Base 6.6L V8 cid:402 cc:6588
  138. 1970 Chevrolet Chevelle Malibu 5.0L V8 cid:307
  139. 1970 Chevrolet El Camino SS 6.6L V8 cid:400
  140. 1970 Chevrolet El Camino Base 7.4L V8 cid:454 cc:7441
  141. 1970 Chevrolet El Camino Base 7.4L V8 cid:454 cc:7439
  142. 1970 Chevrolet El Camino Base 7.4L V8 cid:454
  143. 1970 Chevrolet El Camino Base 5.0L V8 cid:307 cc:5031
  144. 1970 Buick Skylark 350 5.7L V8 cid:350
  145. 1970 Buick Skylark Base 5.7L V8 cid:350
  146. 1970 Chevrolet El Camino Base 5.0L V8 cid:307
  147. 1970 Chevrolet El Camino Base 4.1L L6 cid:250 cc:4098
  148. 1970 Buick Skylark Custom 7.5L V8 cid:455 cc:7456
  149. 1970 Chevrolet Chevelle Base 5.0L V8 cid:307
  150. 1970 Chevrolet Chevelle Base 5.0L V8 cid:307 cc:5031
  151. 1970 Chevrolet Chevelle Base 5.7L V8 cid:350
  152. 1970 Chevrolet El Camino Base 4.1L L6 cid:250 cc:4097
  153. 1970 Buick Skylark Custom 7.5L V8 cid:455
  154. 1970 Buick Skylark Custom 5.7L V8 cid:350
  155. 1969 Pontiac LeMans 6.6L V8 cid:400 cc:6555
  156. 1969 Chevrolet El Camino SS 6.5L V8 cid:396
  157. 1969 Oldsmobile 442 7.5L V8 cid:455
  158. 1969 Oldsmobile 442 7.5L V8 cid:455 cc:7456
  159. 1969 Oldsmobile Cutlass 5.7L V8 cid:350
  160. 1969 Chevrolet El Camino Base 6.5L V8 cid:396
  161. 1969 Chevrolet El Camino Base 6.5L V8 cid:396 cc:6489
  162. 1969 Chevrolet El Camino Base 4.1L L6 cid:250 cc:4098
  163. 1969 Chevrolet El Camino Base 5.0L V8 cid:307
  164. 1969 Pontiac Grand Prix 6.6L V8 cid:400
  165. 1969 Pontiac Grand Prix 6.6L V8 cid:400 cc:6555
  166. 1969 Chevrolet El Camino Base 5.7L V8 cid:350
  167. 1969 Chevrolet El Camino Base 5.3L V8 cid:327 cc:5358
  168. 1969 Pontiac GTO 6.6L V8 cid:400
  169. 1969 Chevrolet El Camino Base 5.0L V8 cid:307 cc:5031
  170. 1969 Oldsmobile 442 6.6L V8 cid:400
  171. 1969 Chevrolet El Camino SS 6.5L V8 cid:396 cc:6489
  172. 1969 Oldsmobile 442 6.6L V8 cid:400 cc:6555
  173. 1969 Pontiac LeMans 6.6L V8 cid:400
  174. 1969 Pontiac LeMans 5.7L V8 cid:350 cc:5733
  175. 1969 Pontiac LeMans 5.7L V8 cid:350
  176. 1969 Pontiac GTO 6.6L V8 cid:400 cc:6555
  177. 1969 Chevrolet El Camino Base 3.8L L6 cid:230 cc:3769
  178. 1969 Chevrolet El Camino Base 4.1L L6 cid:250
  179. 1969 Chevrolet El Camino Base 4.1L L6 cid:250 cc:4097
  180. 1969 Chevrolet Chevelle SS 6.5L V8 cid:396
  181. 1969 Chevrolet Chevelle SS 6.5L V8 cid:396 cc:6489
  182. 1969 Chevrolet El Camino Base 3.8L L6 cid:230
  183. 1969 Chevrolet Chevelle Malibu 5.7L V8 cid:350
  184. 1969 Chevrolet Chevelle Malibu 6.5L V8 cid:396 cc:6489
  185. 1969 Chevrolet Chevelle Malibu 5.0L V8 cid:307 cc:5031
  186. 1969 Buick Skylark 5.7L V8 cid:350
  187. 1969 Chevrolet Chevelle Malibu 5.0L V8 cid:307
  188. 1969 Chevrolet Chevelle Malibu 6.5L V8 cid:396
  189. 1968 Chevrolet El Camino Base 5.4L V8 cid:327
  190. 1968 Chevrolet El Camino Base 5.3L V8 cid:327 cc:5358
  191. 1968 Chevrolet El Camino Base 5.0L V8 cid:307 cc:5031
  192. 1968 Pontiac LeMans 5.7L V8 cid:350
  193. 1968 Oldsmobile 442 6.6L V8 cid:400
  194. 1968 Pontiac GTO 6.6L V8 cid:400 cc:6555
  195. 1968 Chevrolet El Camino Base 6.5L V8 cid:396 cc:6489
  196. 1968 Chevrolet El Camino Base 3.8L L6 cid:230 cc:3769
  197. 1968 Chevrolet El Camino Base 3.8L L6 cid:230
  198. 1968 Chevrolet Chevelle SS 6.5L V8 cid:396 cc:6489
  199. 1968 Chevrolet Chevelle SS 6.5L V8 cid:396
  200. 1968 Pontiac GTO 6.6L V8 cid:400
  201. 1968 Chevrolet El Camino Base 4.1L L6 cid:250 cc:4097
  202. 1968 Chevrolet El Camino Base 4.1L L6 cid:250
  203. 1968 Chevrolet El Camino Base 5.0L V8 cid:307
  204. 1968 Chevrolet El Camino Base 4.1L L6 cid:250 cc:4098
  205. 1968 Oldsmobile 442 7.5L V8 cid:455
  206. 1968 Oldsmobile 442 6.6L V8 cid:400 cc:6555
  207. 1968 Pontiac LeMans 6.6L V8 cid:400 cc:6555
  208. 1968 Pontiac LeMans 6.6L V8 cid:400
  209. 1968 Pontiac LeMans 5.7L V8 cid:350 cc:5733
  210. 1968 Oldsmobile Cutlass 6.6L V8 cid:400 cc:6555
  211. 1968 Oldsmobile Cutlass 6.6L V8 cid:400
  212. 1968 Oldsmobile Cutlass 5.7L V8 cid:350
  213. 1968 Oldsmobile 442 7.5L V8 cid:455 cc:7456
  214. 1968 Chevrolet El Camino Base 6.5L V8 cid:396
  215. 1968 Chevrolet El Camino Base 5.7L V8 cid:350
  216. 1968 Buick Skylark 6.6L V8 cid:400
  217. 1968 Chevrolet Chevelle Malibu 6.5L V8 cid:396 cc:6489
  218. 1968 Chevrolet Chevelle Malibu 6.5L V8 cid:396
  219. 1968 Chevrolet Chevelle Malibu 5.4L V8 cid:327
  220. 1968 Chevrolet Chevelle Malibu 5.3L V8 cid:327 cc:5358
  221. 1968 Chevrolet Chevelle Malibu 5.0L V8 cid:307 cc:5031
  222. 1968 Chevrolet Chevelle Malibu 5.0L V8 cid:307
  223. 1968 Buick Skylark 6.6L V8 cid:400 cc:6555
  224. 1968 Buick Skylark 5.7L V8 cid:350
  225. show all...
Authorized Dealer

About this product

Part #: 817200

For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. This system is mandrel bent for maximum performance and includes 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.

More Details

Exhaust SeriesAmerican Thunder
Exhaust TypeDual
Exit PositionDual Rear
Exit StyleStraight
Heat Shield AttachedNo
Inlet Diameter3.000 in.
MaterialStainless Steel
Muffler Count2
Muffler Part NumberKit Only
Muffler SeriesSuper 40 Series
Outlet Diameter3.000 in.
Outlet Outside Diameter3.000 in.
Single or DualDual
Sound LevelAggressive
System TypeHeader Back
Tail Pipe Diameter3.000 in.
Tip Quantity0
TitleFlowmaster 817200 Header-back System 409S - Dual Rear Exit - American Thunder - Aggressive Sound
Tubing Diameter3.000 in.
Additional Documents
  1. Certificate of Originpdf
  2. Installation Instructionspdf
  3. Warrantypdf

See what our community says about flowmaster products

product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Super 40'soft sound amazing...but drone makes them not family or neighbour friendly.
Is this your first time buying from this brand? Did you consider other brands?
Yes. I have used magna flow in the past, better for longer drives but not as nasty sounding...and I mean nasty in a good way!
View on Brett's build
CeJay Innes-Mammen

371

CeJay Innes-Mammen
2006 Dodge Charger
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Prior experience with these mufflers on other HEMI's
Is this your first time buying from this brand? Did you consider other brands?
Long time patron
View on CeJay's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Got these for a deal of a GT in the local junkyard. Cheap and had everything I needed to fit to my car.
Is this your first time buying from this brand? Did you consider other brands?
Yes, but my dad has had Flowmasters before so between that and their excellent reputation I knew they were for me.
Was it easy to install? Any installation tips that will help others?
Somewhat difficult. Passenger side pipe would not go in the car even after loosening the shock mounts and letting it droop from the control arms. It had to be cut and welded in the car
Once you've had a chance to use the product, did it meet your expectations?
Yes, sounded excellent especially for a V6
View on Joey's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Wanted to try the single chamber muffler out
Is this your first time buying from this brand? Did you consider other brands?
No as I've always purchased Flowmaster
Once you've had a chance to use the product, did it meet your expectations?
Priced as usual for Flowmaster and I must say it's something you must experience yourself
View on Steven's build
product page reviews icon 0product page reviews icon 1product page reviews icon 2product page reviews icon 3product page reviews icon 4
What made you choose this particular product?
Sounded the best in my opinion. Very nice burble with stock exhaust manifolds and reasonable volume when you wind out the car. Just had a great muscle car sound in my opinion.
View on Jeffrey's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

About Flowmaster

Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.

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