Dynomax 17658 Exhaust Muffler

Part Number
Thrush Welded Muffler; Oval; 4 in. x 9 1/2 in.; 2.25 in. Side ID/Center OD; 13 in. Shell Length; 19 in. Overall Length; Metallic Finish
In stock
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Thrush products have been a staple of hot rodders for over 40 years as these performance products bring together the power and the sound favored by true enthusiasts. Thrush products strike as much of an emotional resonance with todays fan as the sound itself.

BRAND: Dynomax


  • Thrush Welded Muffler
  • Thrush Welded Muffler
  • Revisable Design
  • 100% Aluminized For Long Life
  • Proudly Manufactured In The USA
  • Time Proven Spun-Locked Heads For Leak-Free Seal


Body Height4.000 in.
Body Length13.000 in.
Body Width9.500 in.
Inlet Inside Diameter2.250 in.
Inlet PositionOffset
Inlet TypeSingle Offset
Main Piping Diameter2.250 in.
MaterialMetallic Finish
Muffler Count1
Outlet Outside Diameter2.250 in.
Outlet PositionCenter
Outlet TypeSingle Center Outlet
Overall Length19.000 in.
Tip Quantity0
WARNING CA Proposition 65No


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