Rebate

Flowtech 11539FLT LS Turbo Headers, Polished, GM 4.8/5.3/6.0L V8

Rebate

Flowtech 11539FLT LS Turbo Headers, Polished, GM 4.8/5.3/6.0L V8
Flowtech Exhaust

|

#42511539FLT

Flowtech 11539FLT LS Turbo Headers, Polished, GM 4.8/5.3/6.0L V8

$425.95

/pair

Factory Shipped


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Product Summary

Turbo Header Tube Type, Standard Flange Style, Natural

    Rebates Available

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    Key Specs

    MFG. Part #11539FLT
    Header Tube TypeTurbo
    Flange StyleStandard
    Primary Tube Diameter1-3/4"
    Material TypeStainless Steel
    See more specs

    Need To Know

    Need help?

    855.313.9176
    View the Help Center

    Quick and Easy Returns

    Return Policy

    Flowtech Exhaust 11539FLT Details

    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.

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

    • 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)

    Rebates

    Holley October Promo 10% Off Select Parts Sale

    Holley October Promo 10% Off Select Parts SaleHolleyOctoberPromo10%OffSelectPartsSale

    Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.

    Guides & Documents

    Choosing the Right Headers

    CARB Warning

    For race/ off road use only

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
    CARB warning

    Flowtech Exhaust 11539FLT Specifications

    KEY SPECS
    MFG. Part #11539FLT
    BrandFlowtech Exhaust
    Header Tube TypeTurbo
    Flange StyleStandard
    Primary Tube Diameter1-3/4"
    Material TypeStainless Steel
    ColorNatural
    Weld-UpNo
    Collector Diameter3 Inch
    FinishPolished
    Hardware IncludedYes
    Gasket(s) IncludedYes
    Collector Reducers IncludedNo
    Collector Attachment TypeV-band
    GENERAL
    Sold in QuantityPair
    GTIN Code090127733066
    TunedNo
    Crossover Pipe IncludedNo
    Primary Tube Gauge16-gauge
    Gaskets IncludedYes
    Transmission Mount IncludedNo
    Cylinder Head Port ShapeRound
    Catalytic Converter(s) IncludedNo
    Motor Mounts IncludedNo
    Bolts Studs IncludedNo

    Questions & Answers

    Be the first to ask a question.

    Fitment

    • GM LM4

    • GM LS6

    • GM LS2

    • GM LSA

    • GM LM7

    • 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 LS1

    • GM LS3

    • GM LS1

    • GM LS1

    • GM LS6

    • GM LS2

    • GM LS3

    • 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 LS3

    • 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 LS2

    • 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

    • GM LS1

    • GM LS3

    • GM LS1

    • GM LS2

    Customer Impersonation Script