Flowmaster Block Hugger Header GMC SIERRA 2500


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Part #: 814123
Notes: Block Hugger Header
MSRP: $802.59
Your Price: $613.98
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Specs

Attachment Method Stock Flange
Automotive Item Grade High Performance Part
Bolts/Studs Included Yes
CARB (California) Compliant Yes
Collector Included Yes
Color/Finish Silver Ceramic
Header Flange Thickness (in) 0.375
Header Series Scavenger Series Elite
Header Style 4-1 One-Piece
Inlet Port Shape Round
Material Stainless Steel
Outlet Diameter (in) 2.5
Primary Tube Diameter (in) 1.625
Reducers Included No
SEMA Emissions Code 1
Title Flowmaster 814123 Header 409S - Block Hugger - 2.50 in. Stock Flange Outlet - Pair
Tube Gauge 16
Tube Lengths Unequal Length

All Fitments

CADILLAC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2002 - 2005 ESCALADE ALL V8 5.3 ALL ALL ALL
2009 - 2009 ESCALADE ALL V8 6.0 ALL ALL ALL
2007 - 2009 ESCALADE ESV ALL V8 6.2 ALL ALL ALL
CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2007 - 2009 AVALANCHE ALL V8 5.3 ALL ALL ALL
2002 - 2013 SILVERADO 1500 ALL V8 4.8 ALL ALL ALL
2006 - 2013 SILVERADO 1500 ALL V8 5.3 ALL ALL ALL
2007 - 2009 SILVERADO 1500 ALL V8 6.0 ALL ALL ALL
2006 - 2009 SUBURBAN 1500 ALL V8 5.3 ALL ALL ALL
2007 - 2009 SUBURBAN 1500 ALL V8 6.0 ALL ALL ALL
2002 - 2009 TAHOE ALL V8 4.8 ALL ALL ALL
2006 - 2009 TAHOE ALL V8 5.3 ALL ALL ALL
GMC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2002 - 2013 SIERRA 1500 ALL V8 4.8 ALL ALL ALL
2006 - 2013 SIERRA 1500 ALL V8 5.3 ALL ALL ALL
2007 - 2009 SIERRA 1500 ALL V8 6.0 ALL ALL ALL
2002 - 2004 SIERRA 2500 ALL V8 6.0 ALL ALL ALL
2002 - 2009 YUKON ALL V8 4.8 ALL ALL ALL
2005 - 2009 YUKON ALL V8 5.3 ALL ALL ALL
2006 - 2009 YUKON XL 1500 ALL V8 5.3 ALL ALL ALL
2007 - 2009 YUKON XL 1500 ALL V8 6.0 ALL ALL ALL
2007 - 2009 YUKON XL 2500 ALL V8 6.0 ALL ALL ALL
HUMMER
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2007 - 2007 H2 ALL V8 6.0 ALL ALL ALL
2008 - 2009 H2 ALL V8 6.2 ALL ALL ALL

Product Description

Flowmaster’s Scavenger Series Elite long tube headers are designed to replace the restrictive factory cast iron manifolds. These high quality headers are manufactured from stainless steel and are ceramic coated for maximum durability. They feature 2 in. primary tubes, 3/8 in. thick flanges and incorporate Flowmaster’s popular 3-1/2 in. ball flange collector connections ensuring a leak free installation. Scavenger Series long tube headers deliver maximum performance and are suited to the enthusiast who wants the best. Like all Flowmaster products the benefits include improved throttle response, power and engine efficiency. Designed for an easy fit, these headers include gaskets and necessary hardware for easy installation. Note 1- big block frame stands and motor mounts must be used to ensure proper engine location and header fit. Note 2 -this product is legal only for off highway use (except in California or states that have adopted California emission standards), racing use or for use on pre-emission controlled motor vehicles/motor vehicle engines (pre-1966 domestic vehicles certified to California standards, pre-1968 domestic vehicles certified to federal standards and all pre-1968 foreign vehicles), per the application guide.

  • Stainless steel construction
  • Ball & socket collector connections
  • Dyno tuned for maximum performance
  • High temperature ceramic coated
  • 0.375 thick laser cut flanges
  • Premium Flowmaster quality

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