Product Summary

  • Blemished
  • Item has cosmetic imperfections such as scuffs, dents, bends, or similar marks. The item functions as originally intended but is discounted due to these blemishes. Please review the photos and description for more information
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Key Specs

Garage Sale TypeBlemished
Header Tube TypeLong Tube
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
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Need To Know

Ineligible for Return

Contains items that cannot be returned

Doug's Headers D350 Details

Garage Sale Product

This is Garage Sale priced because it is a factory shipped part that we do not sell "in house". This part has cosmetic imperfections that do not effect functionality of part. Please refer to the photos for more details on imperfections and blemishes. SCRATCHED ON OPEN HEADER.

NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

Doug's PASSENGER CAR HEADERS Long Tube Metallic Ceramic CoatedHeader development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

  • 3/8" Thick machined flanges... no warping
  • CNC mandrel bent tubes... accurate fit & better flow
  • Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
  • Heavy 16 gauge tubing... longer life
  • Tubes are pre-polished to remove scratches and the header isfinished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees
  • Doug's Headers D350 1 5/8" 4-Tube Full Length Header Chevrolet Corvette Small Block Chevrolet 63-74 Metallic Ceramic Coating
  • Ceramic Coated
  • Collector: 3
  • Port: OVL
  • Primary: 1 5/8
  • exc. states w/Calif. emission stds
  • Fits D-Port heads
  • req. left side AC bracket H7608
  • removal or modification of locking steering column reqd.
  • with Floor Shifter
  • with A/C
  • For Off-Road Use Only
  • Doug's Headers D350 1 5/8" 4-Tube Full Length Header Chevrolet Corvette Small Block Chevrolet 63-74 Metallic Ceramic Coating
  • Ceramic Coated
  • Collector: 3
  • Port: OVL
  • Primary: 1 5/8
  • exc. states w/Calif. emission stds
  • Fits D-Port heads
  • req. left side AC bracket H7608
  • removal or modification of locking steering column reqd.
  • with Floor Shifter
  • with A/C
  • For Off-Road Use Only

Application

1963-1968 Chevrolet Corvette 5.3L/327 V8
1969-1974 Chevrolet Corvette 5.7L/350 V8

Charts

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++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.

Doug's Headers D350 Specifications

KEY SPECS
MFG. Part #D350
BrandDoug's Headers
Garage Sale TypeBlemished
Header Tube TypeLong Tube
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeSteel
ColorSilver
Weld-UpNo
Collector Diameter3 Inch
FinishCeramic Coated
Hardware IncludedYes
Gasket(s) IncludedYes
GENERAL
Sold in QuantityPair

Questions & Answers

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