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Hooker Headers 21003 - Hooker Headers Universal Sidemounts

Hooker Headers 21003 - Hooker Headers Universal Sidemounts

Hooker Headers#520-21003

4'' Sidetube Slip-In Mufflers
  • Big Block Reverse Flow

    Hooker Headers 21003 - Hooker Headers Universal Sidemounts Details

    Slip-In Mufflers

  • Long Lasting
  • Easily Removed For Racing
  • Quieter Than Glasspack
  • High Level Of Sound Control
  • Will Not Restrict Engine Efficiency

  • Hooker Headers 21003 - Hooker Headers Universal Sidemounts

    Chrome-plated for show-quality looks, these sidemounts have mandrel bent 2.125" inlet and 4" outlet 16-gauge sidepipes that reduce backpressure for improved low-end torque, performance, and fuel economy. Their traditional 4-into-1 design gives the appearance of full fenderwell exit headers that flow into sidepipes with slip-in mufflers (mufflers sold separately).

    Features
  • Chrome-Plated 16-Gauge Sidepipes Reduce Backpressure
  • Improved Low-End Torque for Better Performance and Fuel Economy
  • Classic 4-into-1 Collectors (three are dummy tubes)
  • Slip-In Mufflers Available: Reverse Flow (quieter), Glasspack (performance), or Straight-Through (maximum flow)
  • Mufflers Can Be Easily Removed for Racing

  • Hooker Headers 520-21003

    Inlet Size (in.)
    4
    Outlet Size (in.)
    4
    Body Height (in.)
    N/A
    Length (in.)
    NA
    Shape
    Round
    Body Width (in.)
    N/A
    Body Length (in.)
    N/A
    Material
    N/A
    Position
    N/A
    Inlet Type
    OEM
    Outlet
    OEM
    Inlet Position
    OEM
    Outlet Position
    OEM
    Manufacturer's Part Number:
    21003HKR
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