Rebate

Flowtech 11549FLT Shorty LT Headers, Polished, 2014-2015 Silverado

Rebate

Flowtech 11549FLT Shorty LT Headers, Polished, 2014-2015 Silverado
Flowtech Exhaust

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#42511549FLT

Flowtech 11549FLT Shorty LT Headers, Polished, 2014-2015 Silverado

  • Fits 2014-2015 Chevy/GMC Silverado/Tahoe/Yukon 5.3L & 6.2L V-8, 2WD/4WD models
  • Features mandrel-bent 409 stainless steel tubing
  • TIG-welded, machined 3/8” header flange
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$412.95

/each

Factory Shipped

$459.95

Save $47.00


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Product Summary

Shorty Header Tube Type, Standard Flange Style, Natural

  • Fits 2014-2015 Chevy/GMC Silverado/Tahoe/Yukon 5.3L & 6.2L V-8, 2WD/4WD models
  • Features mandrel-bent 409 stainless steel tubing
  • TIG-welded, machined 3/8” header flange
  • 1-5/8” diameter primary tubes are used for increased exhaust flow
  • OE style 2-1/2” ball and socket collector connects to factory exhaust

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Key Specs

MFG. Part #11549FLT
Header Tube TypeShorty
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeStainless Steel
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855.313.9176
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Flowtech Exhaust 11549FLT Details

Flowtech Headers are the perfect combination of quality and value. These shorty style headers fit the popular 2014-2015 Chevy/GMC Silverado/Tahoe/Yukon 5.3L & 6.2L V-8, 2WD/4WD models.

2014-15 Chevy/GMC Silverado/Tahoe/Yukon 1-5/8" Shorty Header for 5.3/6.2L LT Engines (2WD/4WD)

  • Mandrel-bent 409 Stainless Steel tubes provide consistent tubing diameters for smooth flow and increased exhaust velocity
  • Heavy duty 16-gauge tubing for increased strength and durability
  • Smooth transition, 1-5/8” diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response
  • OE style 2-1/2” ball and socket collector connects to factory exhaust head pipe with no cutting or welding
  • TIG-welded, machined 3/8” header flange for a leak-free seal and maximum strength
  • Premium aluminum header gaskets included
  • Available finishes include Natural, Polished, High Temp Black paint, and Ceramic Coated finishes
  • Popular shorty header for LT-Swaps
  • Headers are a must upgrade if you are using a cold air intake, cat-back exhaust system or tuner

Charts

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.

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 11549FLT Specifications

KEY SPECS
MFG. Part #11549FLT
BrandFlowtech Exhaust
Header Tube TypeShorty
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeStainless Steel
ColorNatural
Weld-UpNo
Collector Diameter2-1/2 Inch
FinishPolished
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Reducers IncludedNo
Collector Attachment TypeStock flange
GENERAL
Sold in QuantityPair
GTIN Code090127739501
TunedNo
Crossover Pipe IncludedNo
Primary Tube Gauge16-gauge
Gaskets IncludedYes
Transmission Mount IncludedNo
Cylinder Head Port ShapeOval
Catalytic Converter(s) IncludedNo
Bolts Studs IncludedYes
Motor Mounts IncludedNo

Questions & Answers

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Fitment

  • 6.2 Chevy LT V8

  • 6.2 Chevy LT V8

  • 6.2 Chevy LT V8

  • Chevy LT V8 Gen V 6.2 LT1

  • Chevy LT V8 Gen V 6.2 LT4

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

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