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Hooker

Hooker Sidetube Slip-In Mufflers

Part # 21003HKR Be the first to write a review

4" Sidetube Slip-In Muffler; Sold In Pairs; All Metal Big Block Reverse Flow Design

Hooker Sidetube Slip-In Mufflers

Not Available

5

Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

See Emissions Details

Also Bought

For 4" sidetube sound control, Hooker builds long lasting slip-in mufflers. These mufflers are easily removed for racing purposes and are available in a performance style glasspack or our quieter all metal reverse flow style for small and big block applications. Hooker mufflers produce a high level of sound control without restricting engine efficiency. Sold in pairs.

Features:

  • Fits 4" Side Tube systems
  • Big Block Reverse Flow Design
  • Easily Removed For Racing
  • Efficient Design yet much Quieter than Glass Pack
  • High Level Of Sound Control
  • All Metal Construction

About Hooker

Hooker Headers & exhaust systems are engineered to increase horsepower and torque while improving throttle response. Shop the official site of Hooker at Holley.com.

Body Height4.00 IN
Body Length33.25 IN
Body MaterialAluminized Steel
Body Width4.00 IN
Brand Hooker
CategoryExhaust
Clamps IncludedNo
ColorRaw/Bare
Emission Code5
Exhaust Tip Quantity0
FinishNatural
Grade TypePerformance
Hanger IncludedNo
Heat Shield AttachedNo
Inlet ConnectionSlip-Fit
Inlet Gasket Quantity0
Inlet Inside Diameter4.00 IN
Inlet LocationCenter
Inlet Outside Diameter4.13
Inlet Quantity1
Inlet TypeSingle
Mount TypeUses New Hangers (Not Included)
Mounting TypeUses Factory Hangers
Muffler SeriesSide-Tube Slip-In
Muffler TypeSide-Tube Slip-In
Outlet ConnectionSlip-Fit
Outlet Gasket Quantity0
Outlet Inside Diameter4.00 IN
Outlet LocationCenter
Outlet Outside Diameter4.13
Outlet Quantity1
Outlet TypeSingle
Overall Length33.25 IN
Part TypeExhaust Muffler
Product TypeStreet Mufflers
ReversibleNo
ShapeRound
Sound LevelAggressive
Sub CategoryMufflers
TunableNo
Universal Or Specific FitUniversal
Vehicle TypeClassic Muscle Car
Street Rod
WarrantyManufacturer's Limited 90 Day Warranty
UPC700414029849
Part Number21003HKR
5

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Manufacturer's Limited 90 Day Warranty: See Details

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    *Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.