Shop by Year/Make/Model

Vehicle Not Listed? Let Us Know By Clicking Here!

Flange - GM

  • 49 Items
  • 1  of  3
244864
Stock Style BBC Header Flange - 3/8" Thick 304 Stainless -2-1/4" Primaries
View Details
SKU: 7041-S
Stock Style BBC Header Flange - 3/8" Thick 304 Stainless -2-1/4" Primaries
$40.23
Stock Style BBC Header Flange - 3/8" Thick 304 Stainless -2-3/8" Primaries
View Details
SKU: 7042-S
Stock Style BBC Header Flange - 3/8" Thick 304 Stainless -2-3/8" Primaries
$41.77
LSX Header Flange - 3/8" Thick Stainless. Round Port for 1-7/8" Primaries.
View Details
SKU: 7046-AS
LSX Header Flange - 3/8" Thick Stainless. Round Port for 1-7/8" Primaries.
$33.44
LSX Header Flange - 3/8" Thick Stainless. Round Port for 1-3/4" Primaries.
View Details
SKU: 7046-S
LSX Header Flange - 3/8" Thick Stainless. Round Port for 1-3/4" Primaries.
$35.40
LSX Header Flange - 3/8" Thick Stainless. Round Port for 2" Primaries.
View Details
SKU: 7046-S2
LSX Header Flange - 3/8" Thick Stainless. Round Port for 2" Primaries.
$35.63
23 Degree SBC Header Flange - 3/8" Thick Mild Steel - for 1-5/8" Primaries
View Details
SKU: 7030
23 Degree SBC Header Flange - 3/8" Thick Mild Steel - for 1-5/8" Primaries
$23.73
23 Degree SBC Header Flange - 5/16" Thick Mild Steel - for 1-3/4" Primaries
View Details
SKU: 7031
23 Degree SBC Header Flange - 5/16" Thick Mild Steel - for 1-3/4" Primaries
$23.10
23 Deg. SBC Adapter Plate - Stock Inline 6-Bolt pattern to Stahl 7-bolt pattern
View Details
SKU: 7032
23 Deg. SBC Adapter Plate - Stock Inline 6-Bolt pattern to Stahl 7-bolt pattern
$68.93
23 Degree SBC Stahl 7-Bolt Flange - 5/16" thick Mild Steel
View Details
SKU: 7034
23 Degree SBC Stahl 7-Bolt Flange - 5/16" thick Mild Steel
$26.33
18 Degree SBC Header Flange - 3/8" Thick Mild Steel. Ports for 1-7/8" Primaries
View Details
SKU: 7035
18 Degree SBC Header Flange - 3/8" Thick Mild Steel. Ports for 1-7/8" Primaries
$26.57
Stock Style BBC Flange Mild Steel Header Flange - 1-7/8" Primaries
View Details
SKU: 7039
Stock Style BBC Flange Mild Steel Header Flange - 1-7/8" Primaries
$29.63
Stock Style BBC Flange Mild Steel Header Flange - 2-1/8" Primaries
View Details
SKU: 7040
Stock Style BBC Flange Mild Steel Header Flange - 2-1/8" Primaries
$27.77
Stock Style BBC Flange Mild Steel Header Flange - 2-3/8" Primaries
View Details
SKU: 7042
Stock Style BBC Flange Mild Steel Header Flange - 2-3/8" Primaries
$30.67
LSX Mild Steel Header Flange. Round Port for 1-3/4" Primaries.
View Details
SKU: 7046
LSX Mild Steel Header Flange. Round Port for 1-3/4" Primaries.
$28.40
23 Degree SBC Mild Steel Header Flange. Ports for 1-1/2" Primaries.
View Details
SKU: 7071
23 Degree SBC Mild Steel Header Flange. Ports for 1-1/2" Primaries.
$21.67
GM GEN 5 LT1 Header Flange - 3/8" Thick SS. Ports for 1-3/4" Primaries.
View Details
SKU: 70-023
GM GEN 5 LT1 Header Flange - 3/8" Thick SS. Ports for 1-3/4" Primaries.
$32.13
GM GEN 5 LT1 Header Flange - 3/8" Thick Mild Steel. Ports for 1-3/4" Primaries.
View Details
SKU: 70-023-STEEL
GM GEN 5 LT1 Header Flange - 3/8" Thick Mild Steel. Ports for 1-3/4" Primaries.
$24.21
GM GEN 5 LT1 Header Flange - 3/8" Thick SS. Ports for 1-7/8" Primaries.
View Details
SKU: 70-024
GM GEN 5 LT1 Header Flange - 3/8" Thick SS. Ports for 1-7/8" Primaries.
$31.83
GM GEN 5 LT1 Header Flange - 3/8" Thick Mild Steel. Ports for 1-7/8" Primaries.
View Details
SKU: 70-024-STEEL
GM GEN 5 LT1 Header Flange - 3/8" Thick Mild Steel. Ports for 1-7/8" Primaries.
$24.25
GM GEN 5 LT1 Header Flange - 3/8" Thick SS. Ports for 2" Primaries.
View Details
SKU: 70-025
GM GEN 5 LT1 Header Flange - 3/8" Thick SS. Ports for 2" Primaries.
$32.30
F.B./LT1 SBC Header Flange - 3/8" Thick Mild Steel. Ports for 1-5/8" Primaries
View Details
SKU: 7030-FB
F.B./LT1 SBC Header Flange - 3/8" Thick Mild Steel. Ports for 1-5/8" Primaries
$24.33
HMS Enforcer SBC Header Flange - 3/8" Thick Mild Steel - for 1-5/8" Primaries
View Details
SKU: 7030-HE
HMS Enforcer SBC Header Flange - 3/8" Thick Mild Steel - for 1-5/8" Primaries
$25.43
23 Degree SBC Header Flange - 3/8" Thick Stainless - for 1-5/8" Primaries
View Details
SKU: 7030-S
23 Degree SBC Header Flange - 3/8" Thick Stainless - for 1-5/8" Primaries
$31.53
23 Degree SBC Header Flange - 3/8" Thick Mild Steel - for 1-7/8" Primaries
View Details
SKU: 7031-C
23 Degree SBC Header Flange - 3/8" Thick Mild Steel - for 1-7/8" Primaries
$28.77
  • 49 Items
  • 1  of  3
Warning / California (Proposition 65)

Proposition 65 requires businesses to provide warnings to Californians about significant exposures to chemicals that cause cancer, birth defects or other reproductive harm. These chemicals can be in the products that Californians purchase, in their homes or workplaces, or that are released into the environment. By requiring that this information be provided, Proposition 65 enables Californians to make informed decisions about their exposures to these chemicals. 

Proposition 65 also prohibits California businesses from knowingly discharging significant amounts of listed chemicals into sources of drinking water. 

Proposition 65 requires California to publish a list of chemicals known to cause cancer, birth defects or other reproductive harm. This list, which must be updated at least once a year, has grown to include approximately 900 chemicals since it was first published in 1987.

For more information, please visit www.p65warnings.ca.gov.

Warning / California (CARB)

California laws prohibit the use of any aftermarket exhaust part or system that modifies, removes or replaces original equipment catalysts unless the California Air Resources Board has issued an Executive Order regarding such part or system or unless the part or system is exempted by being used only on racing vehicles on closed courses. Neither Kooks Headers and Exhaust nor any of their subsidiaries make any representation that any of their parts or systems has received such an Executive Order or that any of their parts or systems conform with the racing vehicles exemption. The purchasers are entirely responsible for informing themselves of applicable California laws and to comply with those laws.

Unauthorized Vendors

Kooks products purchased through any unauthorized vendor (including but not limited to): Amazon and Maryland Speed will not be warrantied by Kooks. Likewise, returns from any unauthorized vendor will not be accepted by Kooks.