Flowtech- 11539FLT LS Turbo Headers Polished


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LS Turbo Headers (Up and forward) 1-3/4" 304SS GM 4.8/5.3/6.0L V8 Polished Finish

Flowtech Headers are the perfect combination of quality and value. These "4 to 1" LS Turbo headers available in 1-3/4" and 1-7/8" tube diameters are an ideal design creating a compact package allowing a variety of configurations (Up and Forward, Down and Forward, or Down and Back) to be used as a universal fit Turbo header.


  • CNC Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increases the cylinder scavenging effect and improves engine breathing
  • Heavy duty 16-gauge 304SS (Polished Finish Only) and 409SS (Natural, Black Painted, and Ceramic Coated finishes) tubing for increased strength and durability
  • 1-3/4” and 1-7/8” tubing diameters available for increased exhaust flow increasing performance and improved throttle response
  • 3” collector for maximum strength and exhaust flow
  • 7/16” thick header flange for a leak-free seal and maximum strength
  • Premium aluminum header gaskets included
  • 3” V-Band Flanges and Clamps are included
  • Available in a total of four finishes (Natural, Black Painted, Ceramic Coated, and Polished)
Bolt Size M8 x 1.25 x 25mm
Brand Flowtech
CARB (California) Compliant No
Collector Diameter 3.00 inch
Emission Code 4
Engine GM Small Block Gen III/IV (LS Based)
Header Finish Polished
Header Style Turbo
Material 304 Stainless Steel
Primary Tube Dia. 1-3/4 inch
Product Type Headers
Tube Material 304 Stainless Steel
UPC 090127733066
Part Number 11539FLT

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