LS1 Chevy Header Flange Plates, Round Port, 1-3/4 Inch
LS1 Chevy Header Flange Plates, Round Port, 1-3/4 Inch
Speedway Motors

|

#41811018

LS1 Chevy Header Flange Plates, Round Port, 1-3/4 Inch

  • Made from heavy duty 5/16" thick steel with a natural finish
  • Specifically designed for headers that have round ports
  • Flanges have an inside diameter of 1.81" and a 1.75" hole diameter
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Tube Diameter Application:

1-3/4 Inch

1-5/8 Inch

$59.99

/pair

In Stock


Quantity

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Product Summary

Round Port Port Style, 1.81" Inside Diameter, Steel

  • Made from heavy duty 5/16" thick steel with a natural finish
  • Specifically designed for headers that have round ports
  • Flanges have an inside diameter of 1.81" and a 1.75" hole diameter
  • Each flange is precision CNC cut to ensure a proper fit
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Key Specs

MFG. Part #41811018
BrandSpeedway Motors
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Speedway Motors 41811018 Details

LS1 Chevy exhaust manifold flange plates for headers have round ports and are CNC cut from 5/16" thick mild steel.

  • Round Port
  • 5/16" Thick Mild Steel
  • Sold as a pair

Speedway Motors 41811018 Specifications

KEY SPECS
MFG. Part #41811018
BrandSpeedway Motors
GENERAL
Port StyleRound Port
Inside Diameter1.81"
Hole Diameter1.75"
Flange Thickness0.3125"
Material TypeSteel
FinishNatural
Hardware IncludedNo
Gasket(s) IncludedNo
Sold in QuantityPair

Ratings & Reviews

5

6 Reviews

Overall Assessment

Customers prize our flange sets for their affordability and quality, essential for building turbo log manifolds. They specifically highlight the product's perfect fitment and appropriateness for diverse applications, such as in creating spacers for OEM LS3 manifolds to clear 6-bolt heads. Most notably, its perfect machining to tolerance, with a flat surface and thick flanges, provides added value. Customers underscore that our flanges won't warp like other brands, ensuring the robustness and quality of the product. They expressed a desire for inclusion of header bolts in the set.

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5

6 reviews

5

6

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Quality product.

5.0

2 years ago

Bastardfords

Alabama

Verified

Quality stuff. Thicker than a bowl of Oatmeal!

Most affordable flange sets

5.0

2 years ago

D7 engines and fabrication

Manhattan, IL

Verified

I have been building turbo log manifolds and selling them on eBay and instagram they work well for my application

Would Recommend

Correct part sick flange perfectly flat and machine to toler

5.0

4 years ago

Art

37129

Verified

Thick flange with a flat service and machine to tolerance

Would Recommend

Fit excellent - Would buy again!

5.0

4 years ago

SuperDave

United States

Verified

Used as a spacer with oem ls3 manifolds to clear 6-bolt heads and fitment was great!

Would Recommend

Highly recommend

5.0

6 years ago

Edog

Lawrenceville Illinois

Verified

Good quality. Nice thick flanges, perfect fitment. Wont warp like other brands.

Would Recommend

great product

5.0

14 years ago

1954ford

omaha, ne

Verified

Works great, just wish they came with header bolts.

Would Recommend

Showing 6 of 6 reviews

Questions & Answers

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Fitment

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  • GM LQ9

  • 6.2 Chevy LS V8

  • GM LM7

  • GM LQ9

  • 6.2 Chevy LS V8

  • GM LM7

  • GM LQ9

  • 6.2 Chevy LS V8

  • GM L76

  • GM LC9

  • GM LMG

  • GM LY5

  • GM LY5

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • GM LS4

  • GM LS4

  • 4.8 Chevy LS V8

  • GM LM7

  • 4.8 Chevy LS V8

  • GM L20

  • GM LM7

  • GM LY2

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ9

  • GM LQ4

  • GM LM7

  • GM LQ4

  • GM LQ9

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LM4

  • GM LMG

  • GM LY5

  • GM LM7

  • GM L59

  • GM LM7

  • GM LC9

  • GM LMG

  • GM LY5

  • GM LC9

  • GM LMG

  • GM LMG

  • GM LY5

  • GM LQ4

  • GM LMG

  • GM LY5

  • 4.8 Chevy LS V8

  • GM L59

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LMG

  • GM LY5

  • 6.2 Chevy LS V8

  • GM LC9

  • GM LMG

  • GM LC9

  • GM LMG

  • GM LMG

  • GM LY5

  • GM LH6

  • GM LM4

  • GM LM4

  • GM LM4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LQ4

  • GM L20

  • GM LC9

  • GM LMG

  • GM L33

  • GM L59

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L20

  • GM LM7

  • GM LY2

  • GM LC9

  • GM LMG

  • GM LM7

  • GM L59

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • 6.2 Chevy LS V8

  • GM LH8

  • GM LH8

Customer Impersonation Script