1966 GMC 2500 Header Reducers

93 products fit your

1966 GMC 2500

Add Engine

Show Direct Fit Parts

Select Flange Style

All

3-Bolt

3-Bolt Ball and Socket

2-Bolt

Universal Bolt-in Flange

93 products

Sort By:

Clear All

Fitment

1966 GMC 2500

Products

Hedman Hedders |

#41821110

Hedman Hedders 21110 3 Inch Header Reducers 2-1/2 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$45.48

/pair

Hedman Hedders |

#41821114

Hedman Hedders 21114 3 Inch Ball-Style Header Reducers 2-1/4 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt Ball and Socket

$33.39

/pair

Hedman Hedders |

#41821116

Hedman Hedders 21116 2-1/2 Inch Ball-Style Header Reducer 2 Inch

Sold in Quantity:

Each

Flange Style:

3-Bolt Ball and Socket

$25.12

/each

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.25-in

Speedway Motors |

#9302509

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.25-in

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$90.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5/2.0-in SS

Speedway Motors |

#9302512

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5/2.0-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$110.99

/pair

Installing a Gear Reduction Mini Starter - 1967 Chevelle

To keep this project moving forward, Jeff installs a gear reduction mini starter on his big block. See how to apply the mini starter on 153 or 168 tooth flexplates.

Lowering a 1967 Chevelle

In this Tech Tip, John offers some suggestions about lowering a 1967 Chevelle.

Replacing GM Rear End Spherical Bushings

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/2.5-in SS

Speedway Motors |

#9302515

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/2.5-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$124.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in

Speedway Motors |

#9302518

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$114.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in SS

Speedway Motors |

#9302519

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in SS

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$146.99

/pair

Hedman Hedders |

#41821155

Hedman Hedders 21155 2-1/2 Inch Header Collector Conversion Kit

Sold in Quantity:

Kit

Flange Style:

3-Bolt Ball and Socket

$199.99

/kit

-9%

Patriot Exhaust |

#447H7248

Patriot Exhaust H7248 Collector Reducers, 2.5" to 2.0" Outlet

Material Type:

Steel

Flange Style:

3-Bolt

$43.37

/pair

$47.71

Hedman Hedders |

#41821134

Hedman Hedders 21134 3 Inch Ball-Style Header Reducer 3 Inch

Sold in Quantity:

Each

Flange Style:

3-Bolt Ball and Socket

$25.57

/each

Spectre 4642 Header Reducer Kit, 2-1/2 Inlet, 2-1/4 Inch Outlet, Pair

Spectre Performance |

#4654642

Spectre 4642 Header Reducer Kit, 2-1/2 Inlet, 2-1/4 Inch Outlet, Pair

(2)

Material Type:

Steel

Flange Style:

3-Bolt

$34.99

/pair

Hedman Hedders |

#41821152

Hedman Hedders 21152 3 Inch Header Collector Conversion Kit

Sold in Quantity:

Kit

Flange Style:

3-Bolt Ball and Socket

$39.99

/kit

Hedman Hedders |

#41821104

Hedman Hedders 21104 3-1/2 Inch Steel Header Reducer 2-1/2 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$38.99

/pair

Hedman Hedders |

#41821103

Hedman Hedders 21103 3 Inch Steel Header Reducer 2-1/2 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$36.99

/pair

Patriot Exhaust |

#9307249

Patriot Exhaust H7249 Replacement Collector Reducer For H8014

Sold in Quantity:

Set

GTIN Code:

694342533175

$98.79

/pair

Patriot H7251 3" Diameter, 2 1/4" Outlet Collector Reducers

Patriot Exhaust |

#9307251

Patriot H7251 3" Diameter, 2 1/4" Outlet Collector Reducers

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$54.86

/pair

-9%

JBA 1650ST Stainless Steel 1650 Starter Tubes

JBA Headers |

#4471650ST

JBA 1650ST Stainless Steel 1650 Starter Tubes

(3)

Sold in Quantity:

Pair

Flange Style:

2-Bolt

$70.28

/set

$77.31

Hedman Hedders |

#41821122

Hedman Hedders 21122 3 Inch Ball-Style Header Reducers 2-1/4 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt Ball and Socket

$47.65

/pair

Hedman Hedders |

#41821156

Hedman Hedders 21156 3 Inch Header Collector Conversion Kit

Sold in Quantity:

Kit

Flange Style:

3-Bolt Ball and Socket

$165.26

/kit

-9%

Patriot Exhaust |

#447H7238

Patriot Exhaust H7238 Collector Reducers, 3 Inch

(2)

Material Type:

Steel

Flange Style:

3-Bolt

$49.37

/pair

$54.31

Hedman Hedders |

#41821119

Hedman Hedders 21119 3 Inch Ball-Style Header Reducers 3 Inch

(1)

Sold in Quantity:

Pair

Flange Style:

3-Bolt Ball and Socket

$38.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5-inch

Speedway Motors |

#9302501

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5-inch

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$69.99

/pair

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.5-in

Speedway Motors |

#9302510

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.5-in

(1)

Gasket(s) Included:

Yes

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$94.99

/pair

Hedman Hedders |

#41821143

Hedman Hedders 21143 3 Inch Ball-Style Header Reducer 2-1/2 Inch

Sold in Quantity:

Each

Flange Style:

3-Bolt Ball and Socket

$23.92

/each

Hedman Hedders |

#41821101

Hedman Hedders 21101 2-1/2 Inch Steel Header Reducer 2 Inch

Sold in Quantity:

Each

Flange Style:

3-Bolt

$33.99

/each

Hedman Hedders |

#41821106

Hedman Hedders 21106 2-1/2 Inch Header Reducer w/O2 Bung 2 Inch

Sold in Quantity:

Each

Flange Style:

3-Bolt

$34.99

/each

Hedman Hedders |

#41821107

Hedman Hedders 21107 3 Inch Header Reducer w/O2 Bung 2-1/4 Inch

Sold in Quantity:

Each

Flange Style:

3-Bolt

$30.12

/each

Hedman Hedders |

#41821109

Hedman Hedders 21109 2-1/2 Inch Header Reducers 2 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$42.59

/pair

Hedman Hedders |

#41821113

Hedman Hedders 21113 2-1/2 Inch Ball-Style Header Reducers 2 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt Ball and Socket

$30.99

/pair

Hedman Hedders |

#41821115

Hedman Hedders 21115 3 Inch Ball-Style Header Reducers 2-1/2 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt Ball and Socket

$33.99

/pair

Hedman Hedders |

#41821153

Hedman Hedders 21153 2-1/2 Inch Header Collector Conversion Kit

Sold in Quantity:

Kit

Flange Style:

3-Bolt Ball and Socket

$37.99

/kit

Hedman Hedders |

#41821142

Hedman Hedders 21142 3 Inch Header Reducer 2-1/2 Inch

Sold in Quantity:

Each

Flange Style:

3-Bolt

$27.99

/each

Hedman 22105 2-1/2 Inch Stainless Steel Header Reducers, Pair

Hedman Hedders |

#41822105

Hedman 22105 2-1/2 Inch Stainless Steel Header Reducers, Pair

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$178.99

/pair

Hedman Hedders |

#41822115

Hedman Hedders 22115 3 Inch Ball-Style Header Reducers 2-1/2 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt Ball and Socket

$167.97

/pair

Hedman Hedders |

#41822123

Hedman Hedders 22123 2-1/2 Inch Ball-Style Header Reducers 2 Inch

Sold in Quantity:

Pair

Flange Style:

3-Bolt Ball and Socket

$172.92

/pair

Showing 1 - 36 of 93 results

Shop Feedback:

Did you find what you are looking for?

1966 GMC 2500 Header Reducers

Flange Style

Brand

Availability

Discounts

Price

Customer Rating

Products

Hedman Hedders 21110 3 Inch Header Reducers 2-1/2 Inch

Hedman Hedders 21114 3 Inch Ball-Style Header Reducers 2-1/4 Inch

Hedman Hedders 21116 2-1/2 Inch Ball-Style Header Reducer 2 Inch

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.25-in

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5/2.0-in SS

Related Articles

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/2.5-in SS

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.5/3.0-in SS

Hedman Hedders 21155 2-1/2 Inch Header Collector Conversion Kit

Patriot Exhaust H7248 Collector Reducers, 2.5" to 2.0" Outlet

Hedman Hedders 21134 3 Inch Ball-Style Header Reducer 3 Inch

Spectre 4642 Header Reducer Kit, 2-1/2 Inlet, 2-1/4 Inch Outlet, Pair

Hedman Hedders 21152 3 Inch Header Collector Conversion Kit

Hedman Hedders 21104 3-1/2 Inch Steel Header Reducer 2-1/2 Inch

Hedman Hedders 21103 3 Inch Steel Header Reducer 2-1/2 Inch

Patriot Exhaust H7249 Replacement Collector Reducer For H8014

Patriot H7251 3" Diameter, 2 1/4" Outlet Collector Reducers

JBA 1650ST Stainless Steel 1650 Starter Tubes

Hedman Hedders 21122 3 Inch Ball-Style Header Reducers 2-1/4 Inch

Hedman Hedders 21156 3 Inch Header Collector Conversion Kit

Patriot Exhaust H7238 Collector Reducers, 3 Inch

Hedman Hedders 21119 3 Inch Ball-Style Header Reducers 3 Inch

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 2.5-inch

3-Bolt Exhaust Flange to V-Band Flange w/ O2 Bung, 3.0/2.5-in

Hedman Hedders 21143 3 Inch Ball-Style Header Reducer 2-1/2 Inch

Hedman Hedders 21101 2-1/2 Inch Steel Header Reducer 2 Inch

Hedman Hedders 21106 2-1/2 Inch Header Reducer w/O2 Bung 2 Inch

Hedman Hedders 21107 3 Inch Header Reducer w/O2 Bung 2-1/4 Inch

Hedman Hedders 21109 2-1/2 Inch Header Reducers 2 Inch

Hedman Hedders 21113 2-1/2 Inch Ball-Style Header Reducers 2 Inch

Hedman Hedders 21115 3 Inch Ball-Style Header Reducers 2-1/2 Inch

Hedman Hedders 21153 2-1/2 Inch Header Collector Conversion Kit

Hedman Hedders 21142 3 Inch Header Reducer 2-1/2 Inch

Hedman 22105 2-1/2 Inch Stainless Steel Header Reducers, Pair

Hedman Hedders 22115 3 Inch Ball-Style Header Reducers 2-1/2 Inch

Hedman Hedders 22123 2-1/2 Inch Ball-Style Header Reducers 2 Inch

Popular Parts