null Skip to main content
Toggle menu
GUD Racing Parts
  • Hello! Sign in

    Your Account
      Access account and manage orders
    • Sign in
    • Register
    • Compare
    • Wishlist
  • My cart
    Item
    close
Categories
  • Category

    Category

    • Air and Fuel
    • Books Videos and Software
    • Brakes
    • Chassis Components
    • Drivetrain
    • Engines and Components
    • Exhaust
    • Exterior Components
    • Fasteners
    • Fittings Hoses and Valves
    • Gaskets and Seals
    • Gauges and Accessories
    • Heating and Cooling
    • Ignitions and Electrical
    • Interior and Accessories
    • Mobile Electronics
    • Oils, Fluids and Sealer
    • Paints and Finishing
    • Promotional Collectables and Apparel
    • Safety Equipment
    • Steering and Components
    • Suspension and Components
    • Tools
    • Towing Equipment
    • Wheels and Tires
  • pages
    • Super Sale
    • About Us
    • Technical Articles
    • Contact Us
    • GUD Drivers
    • Shipping & Returns
  • Sign in or Register
    • Facebook
    • Youtube
  • Super Sale
  • About Us
  • Technical Articles

Free Ground Shipping in USA

for orders over $100

Free Exchange

within 30 days of purchase

Amazing Selection

we stock all major brands

Safe Payments

trusted SSL protection

  1. Home
  2. Category
  3. Exhaust
  4. Headers, Manifolds and Components
  5. Header Reducers

Header Reducers

  • on sale!
    9% off
    3in Header Reducers , by TRANS-DAPT, Man. Part # 9374

    TRANS-DAPT

    3in Header Reducers , by TRANS-DAPT, Man. Part # 9374

    Collector Reducer - 3 in Inlet to 2.5 in Outlet - 3-Bolt Flange - Steel - Aluminized - Pair
    $28.34
    $30.99
    $30.99
    add to cart
  • Sold Out
    3in Oxygen Sensor Reducer, by HEDMAN, Man. Part # 21107

    HEDMAN

    3in Oxygen Sensor Reducer, by HEDMAN, Man. Part # 21107

    Collector Reducer - 3 in Inlet to 2.25 in OD Outlet - 3-Bolt Flange - O2 Sensor Bung / Gasket - Steel - Natural - Each
    $29.99
    out of stock
  • Sold Out
    3in To 2-1/2in Collector w/O2 Sensor Bung 3 Bolt, by HEDMAN, Man. Part # 21142

    HEDMAN

    3in To 2-1/2in Collector w/O2 Sensor Bung 3 Bolt, by HEDMAN, Man. Part # 21142

    Collector Reducer - 3 in Inlet to 2.5 in OD Outlet - 3-Bolt Flange - Hardware Included - O2 Bung - Steel - Black Paint - Each
    $24.99
    out of stock
  • on sale!
    5% off
    3in To 2-1/2in Collector W/O2 Sensor Bung B&S, by HEDMAN, Man. Part # 21143

    HEDMAN

    3in To 2-1/2in Collector W/O2 Sensor Bung B&S, by HEDMAN, Man. Part # 21143

    Collector Reducer - 3 in Inlet to 2.5 in OD Outlet - 3-Bolt Ball and Socket Flange - Hardware Included - O2 Bung - Steel - Black Paint - Each
    $22.79
    $23.99
    $23.99
    choose option
  • 3in To 2-1/8in Reducers (pair), by HOOKER, Man. Part # 11030HKR

    HOOKER

    3in To 2-1/8in Reducers (pair), by HOOKER, Man. Part # 11030HKR

    Collector Reducer - 3 in Inlet to 2.125 in Outlet - 3-Bolt Flange - Steel - Black Paint - Pair
    $67.25
    choose option
  • 3in To 2.125in Reducers (Pair), by FLOWTECH, Man. Part # 10007FLT

    FLOWTECH

    3in To 2.125in Reducers (Pair), by FLOWTECH, Man. Part # 10007FLT

    Collector Reducer - 3 in Inlet to 2.125 in Outlet - 3-Bolt Flange - Hardware Included - Steel - Kit
    $36.60
    add to cart
  • Previous
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • Next
!

Footer Start

  • Free Shipping

    over $100

  • Easy Return

    30 days free return available

  • Amazing Selection

    we stock all the major brands

  • Safe Payment

    secure SSL protection

Contect Us
20118A Stone Gate Court Tomball, TX 77377
8328632314
Navigate
  • Super Sale
  • About Us
  • Technical Articles
  • Contact Us
  • GUD Drivers
  • Shipping & Returns
  • Sitemap
Popular Brands
  • ALLSTAR PERFORMANCE
  • COMP CAMS
  • ARP
  • MOROSO
  • VIBRANT PERFORMANCE
  • HOLLEY
  • FIVESTAR
  • FRAGOLA
  • AUTOMETER
  • QUICKCAR RACING PRODUCTS
  • View All
Categories
  • Category
Subscribe to our email

Get the latest updates on new products and upcoming sales

  • Facebook
  • Youtube

© 2025 GUD Racing Parts

x
Compare

Item Successfully added to comparison list.

x
Compare

Item Successfully removed from comparison list.

x
Compare

At least 2 products are needed to make a valid comparison.