Hedman Hedders 66681 99-03 GM Truck Headers, HTC
Hedman Hedders 66681 99-03 GM Truck Headers, HTC
Hedman Hedders

|

#41866681

Hedman Hedders 66681 99-03 GM Truck Headers, HTC

  • Standard-Duty Headers
  • 1999-2004 Chevy/GMc 1/2-1 Ton Trucks/Suvs
  • 4.8, 5.3, 6.0L LS Engine With A.I.R. System
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$564.99

/set

Factory Shipped


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Product Summary

Shorty Header Tube Type, Round Exhaust Port Shape

  • Standard-Duty Headers
  • 1999-2004 Chevy/GMc 1/2-1 Ton Trucks/Suvs
  • 4.8, 5.3, 6.0L LS Engine With A.I.R. System
  • 1-5/8 In. Short Tubes
  • 50 State Legal
See more details

Key Specs

MFG. Part #66681
Header Tube TypeShorty
Exhaust Port ShapeRound
Flange StyleStandard
Primary Tube Diameter1-5/8"
See more specs

Need To Know

Made to Order

This custom item will ship when completed

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Hedman Hedders 66681 Details

Hedman Hedders has been manufacturing quality headers in the USA since 1954, and classic musclecars is their specialty. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows you to bolt up, even if it is not perfectly aligned with the header collectors.

Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.

Features

  • Standard-Duty Headers
  • 1999-2004 Chevy/GMc 1/2-1 Ton Trucks/Suvs
  • 4.8, 5.3, 6.0L LS Engine With A.I.R. System
  • 1-5/8 In. Short Tubes
  • 50 State Legal
  • 1 Cone & 1 Flat Collector- HTC Polished Silver Ceramic Coated

Application

  • 2002-2003 Cadillac Escalade 5.3 Liter RWD
  • 2002-2003 Cadillac Escalade 6.0 Liter RWD
  • 2002-2003 Chevrolet Avalanche 1500 5.3 Liter 4WD
  • 1999-2003 Chevrolet Silverado 1500 4.8 Liter 4WD
  • 1999-2003 Chevrolet Silverado 1500 5.3 Liter 4WD
  • 1999-2000 Chevrolet Silverado 2500 5.3 Liter 4WD
  • 1999-2003 Chevrolet Silverado 2500 6.0 Liter 4WD
  • 2001-2003 Chevrolet Silverado 3500 6.0 Liter 4WD
  • 2001-2003 Chevrolet Silverado 3500 6.0 Liter RWD
  • 2000-2003 Chevrolet Suburban 1500 5.3 Liter 4WD
  • 2000-2003 Chevrolet Suburban 1500 5.3 Liter RWD
  • 2000-2003 Chevrolet Suburban 2500 6.0 Liter RWD
  • 2000-2003 Chevrolet Tahoe 4.8 Liter 4WD
  • 2000-2003 Chevrolet Tahoe 4.8 Liter RWD
  • 2000-2003 Chevrolet Tahoe 5.3 Liter 4WD
  • 2000-2003 Chevrolet Tahoe 5.3 Liter RWD
  • 1999-2003 GMC Sierra 1500 4.8 Liter 4WD
  • 1999-2003 GMC Sierra 1500 5.3 Liter 4WD
  • 1999-2000 GMC Sierra 2500 5.3 Liter 4WD
  • 1999-2003 GMC Sierra 2500 6.0 Liter 4WD
  • 2001-2003 GMC Sierra 3500 6.0 Liter 4WD
  • 2001-2003 GMC Sierra 3500 6.0 Liter RWD
  • 2000-2003 GMC Yukon 4.8 Liter 4WD
  • 2000-2003 GMC Yukon 4.8 Liter RWD
  • 2000-2003 GMC Yukon 5.3 Liter 4WD
  • 2000-2003 GMC Yukon 5.3 Liter RWD
  • 2000-2003 GMC Yukon XL 1500 5.3 Liter 4WD
  • 2000-2003 GMC Yukon XL 1500 5.3 Liter RWD
  • 2000-2003 GMC Yukon XL 2500 6.0 Liter RWD

Specs

Manufacturer Specs:

TUBE DIAMETER1-5/8 in.
TUBE STYLEShorty
AIR CONDITIONINGYes
AUTOMATIC TRANSMISSION - COLUMNYes
AUTOMATIC TRANSMISSION - FLOORYes
MANUAL TRANSMISSION - COLUMNYes
MANUAL TRANSMISSION - FLOORYes
POWER STEERINGYes
COLLECTOR ATTACHMENTStock
COLLECTOR DIAMETERStock
COLLECTOR SIZEStock
COLLECTOR STYLEThere are 2 factory Collector designs. INSPECT STOCK CONNECTION BEFORE ORDERING!
REDUCER OUTLET SIZEStock
EXHAUST SYSTEM DIAFactory hookup
CONTENTSheaders, gaskets (when applicable), mounting bolts
FINISHHTC Polished Silver Ceramic-Metallic
FINISH TYPEHTC SILVER (polished) Ceramic-metallic Coating
FLANGE STYLEStandard
FLANGE THICKNESS0.375 in.
HEADER STYLEShort Tube
MATERIALMild Steel
TUBE DESIGNStandard
TUBE LENGTHShort Tubes
TUBE MATERIAL THICKNESS14g
TUBE SIZE1-5/8 in.
WITH AIR SYSTEMYes
WITH EGRYes
EOYes
EO #EO# D167-31
WELD-UPNo
TUNEDNo
BOLTS/STUDS INCLUDEDYes
CATALYTIC CONVERTERS INCLUDEDNo
CROSSOVER PIPE INCLUDEDNo
GASKET OR SEAL INCLUDEDYes
HEADER FASTENERS INCLUDEDYes
INSTALLATION HARDWARE INCLUDEDYes
MOTOR MOUNTS INCLUDEDNo
MOUNTING HARDWARE INCLUDEDYes
REDUCERS INCLUDEDNo
Y-PIPE INCLUDEDNo
QUANTITYSold as a pair.
PRIMARY TUBE GAUGE14g
PRIMARY TUBE DIAMETER IN1.625 in.
PACKAGE CONTENTSSet of Headers, mounting hardware and gaskets
HEADER MATERIALMild Steel
HEADER FINISHHTC Polished Silver Ceramic-Metallic
CYLINDER HEAD PORT SHAPERound
CYLINDER HEADStock Profile Heads
HEADER CONSTRUCTIONMILD STEEL- Standard-Duty
REPLACEMENT GASKET41827500
REPLACEMENT HEAD FLANGE GASKET41827500
HEADER PORT SHAPERound Port
PORT SHAPERound
COLLECTOR BOLTS INCLUDEDYes
AIR CONDITIONING NOTESWith A.I.R., EGR

Hedman Hedders 66681 Specifications

D-167-33
KEY SPECS
MFG. Part #66681
BrandHedman Hedders
Header Tube TypeShorty
Exhaust Port ShapeRound
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeMild Steel
ColorSilver
Weld-UpNo
Collector DiameterStandard
FinishPolished
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Reducers IncludedNo
CARB EO#
GENERAL
Sold in QuantitySet
Flange Thickness0.375"
TunedNo
Crossover Pipe IncludedNo
Primary Tube Gauge14-gauge
CARB EO NumberEO# D167-31

Questions & Answers

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Fitment

  • GM LM4

  • GM LS2

  • GM LM7

  • GM LQ9

  • GM LM7

  • GM LQ9

  • GM LM7

  • GM LQ9

  • GM L76

  • GM LC9

  • GM LMG

  • GM LY5

  • GM LY5

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • GM LS2

  • 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 L98

  • GM LM7

  • GM LQ4

  • GM L98

  • GM LQ9

  • GM L98

  • GM LQ4

  • GM L98

  • GM LQ4

  • GM LQ4

  • GM L98

  • GM L98

  • GM LQ4

  • GM LQ4

  • GM L98

  • GM LZ1

  • GM LM4

  • GM L77

  • 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 L96

  • GM LMG

  • GM LY5

  • 4.8 Chevy LS V8

  • GM L59

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LMG

  • GM LY5

  • GM LC9

  • GM LMG

  • GM LZ1

  • 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 LZ1

  • GM L33

  • GM L59

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM L96

  • GM L96

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L20

  • GM LM7

  • GM LY2

  • 4.8 Chevy LS V8

  • GM L20

  • GM LM7

  • GM LY2

  • GM LZ1

  • GM LC9

  • GM LMG

  • GM LZ1

  • GM LM7

  • GM L59

  • GM LM7

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM LH8

  • GM LH9

  • GM LH8

  • GM LH9

  • GM LS2

Customer Impersonation Script