Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededHEDMANPART NUMBER: 500-66447
Standard Duty HTC Coated Full-Length Headers 1987-91 Chevy Corvette 283-400
$53299
Ships on 09/11/2026
Lowest Price GuaranteeGM Cars
- Standard Duty HTC Coated Full-Length Headers
- 1987-91 Chevy Corvette 283-400
- 1-5/8" Tube, 3" Collector
- Will fit angle plug heads (Chevy aluminum only)
- Must modify rotary A/C bracket
- With EGR
- Includes parts necessary to retain 50-state emission devices
- Not legal for sale or use in California
- With A.I.R. system
- Modification to stock exhaust required to retain catalytic converter
- Not applicable or intended for street or highway use (legal only for racing vehicles which may never be used on a highway)
Part TypeHeader
BrandHEDMAN
Package Height9.5
Package Width18.5
Package Length39.0
Weight27.0 PG
Part CategoryPerformance Parts
Header FinishSilver ceramic coated
Tube DirectionDown Swept
QuantitySold as a pair
Bolts/Studs IncludedYes
Cylinder Head Port ShapeOval
Transmission Mount IncludedNo
Header MaterialSteel
Gaskets IncludedYes
Weld-UpNo
Collector AttachmentBall and socket flange
Flange StyleStandard
TunedNo
Collector Diameter3 in (76.2 mm)
Motor Mounts IncludedNo
Part FitmentSemi Universal
Reducers IncludedYes
ApplicationAutomotive
Primary Tube Gauge18-gauge
Header StyleFull-length
Cross Over Pipe IncludedNo
Catalytic Converter(S) IncludedNo
Primary Tube Diameter1.625 in (41.3 mm)
Vendor Part Number66447
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Spark Plug Wire Boot Guards, Silver [Set of 8]](https://www.jegs.com/images/mini_200/500/555/555-40310.jpg)
![Spark Plug Wire Boot Guards, Black [Set of 8]](https://www.jegs.com/images/mini_200/500/555/555-40300.jpg)
![Spark Plug Wire Boot Guards, Red [Set of 8]](https://www.jegs.com/images/mini_200/500/555/555-40302.jpg)
![Spark Plug Wire Boot Guards, Blue [Set of 8]](https://www.jegs.com/images/mini_200/500/555/555-40304.jpg)
JEGS
Exhaust & Header Wrap 1 in. x 50 ft. x 1/16 in. Thick
Part Number : 555-32062
$2799$30.79
You Save$2.80
JEGS
Exhaust & Header Wrap 2 in. x 50 ft. x 1/16 in. Thick
Part Number : 555-32057
$4899$53.99
You Save$5.00
ITEM YOU MAY ALSO CONSIDER
HEDMAN
Standard Duty Uncoated Full Length Headers 1987-91 Corvette 283-400
Part Number : 500-68447
$53499
HEDMAN
Elite Ultra-Duty HTC Coated Full Length Headers 1987-91 Corvette 283-400
Part Number : 500-68487
$79499
HEDMAN
Part Number : 500-68447
$53499
HEDMAN
Part Number : 500-68487
$79499
Some parts are not legal for use in California or other states with similar laws / regulations
