5405 - Mr. Gasket Header Reducer Kit - 3
5405 - Mr. Gasket Header Reducer Kit - 3

Mr. Gasket Header Reducer Kit - 3" To 2-1/2"

One Pair, 3-Bolt 3" to 2.5" pipe. Kit includes gaskets and all hardware needed for installation.

PART# 5405

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Ideal for connecting headers w/ 3-Bolt 3.0" flange to your 2.5" exhaust system.


  • Adapts 3.0" 3-Bolt Header Flange to 2-1/2" Exhaust
  • Complete Collector/Reducer Kit w/Reducers, Flanges, Gaskets & Hardware
  • Heavy Gauge Collector Ring
  • Grade 5 Bolts w/ Lock Nuts
  • Retail Packaging


BrandMr. Gasket
Emission Code5
Product TypeHeader Reducer
Type of ComponentHeader Reducer
Part Number5405


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.

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