Flowmaster Scavenger Series Elite Header 814123 - Modern Day Muffler

Flowmaster Scavenger Series Elite Header 814123

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Flowmaster's Scavenger Series Elite shorty headers are designed to replace the restrictive factory manifolds. These high quality headers are manufactured from stainless steel and are ceramic coated for maximum durability. They feature 1-5/8 in. primary tubes, 3/8 in. thick laser cut flanges and factory collector connections, ensuring a direct-fit, leak free installation. 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: this product has been granted a California Air Resources Board (CARB) exemption, an E.O. number, or is a direct or consolidated replacement part. It is 50-state legal, per the application guide. CARB EO# D-698-1.


  • 3/8in. Thick Laser Cut Flanges
  • Dyno tuned for maximum performance
  • High Temperature Ceramic Coating
  • Stainless Steel Construction


  • Fits 02-14 Silverado/Sierra 4.8L/5.3L, 02-09 Suburban/Yukon XL 5.3L, 07-09 Suburban/Yukon XL 6.0L, 02-09 Tahoe/Yukon/Denali 4.8L/5.3L, 07-09 Yukon/Denali 6.0L, 02-09 Avalanche 5.3L, 02-09 Escalade/ESV/EXV 4.8L/5.3L, 07-09 Escalade/ESV/EXV 6.0L/6.2L, 0
Attachment Method Stock Flange
Automotive Item Grade High Performance Part
Bolts/Studs Included Yes
Brand Flowmaster
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
California Proposition 65 Chemical Name Nickel (Metallic)
California Proposition 65 Required Yes
CARB (California) Compliant Yes
CARB EO# D-698-1
Collector Included Yes
Color/Finish Silver Ceramic
Emission Code 1
Engine GM LS
Header Finish Silver Ceramic
Header Flange Thickness (in) 3/8 inch
Header Series Scavenger Series Elite
Header Style Shorty
Inlet Port Shape Round
Material Stainless Steel
Outlet Diameter (in) 2.5
Primary Tube Diameter (in) 1.625
Product Type Headers
Reducers Included No
Tube Gauge 16
Tube Lengths Unequal Length
Warning California Proposition 65