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Doug's Headers D743 Full Length Header, 1-7/8 In, 65-75 Cutlass, CC
Doug's Headers D743 Full Length Header, 1-7/8 In, 65-75 Cutlass, CC

Doug's Headers D743 Full Length Header, 1-7/8 In, 65-75 Cutlass, CC

455 Oldsmobile V8, Full-length Header Tube Type, Ceramic Coated, Standard Flange Style, Steel

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Doug's Headers D743 Full Length Header, 1-7/8 In, 65-75 Cutlass, CC
Doug's Headers D743 Full Length Header, 1-7/8 In, 65-75 Cutlass, CC
Doug's Headers D743 Full Length Header, 1-7/8 In, 65-75 Cutlass, CC
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Doug's Headers D743 Full Length Header, 1-7/8 In, 65-75 Cutlass, CC
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We estimate this item will ship on or before May 10th.
Part # 447D743
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Details

Header Tube Type:
Full-length
Finish:
Ceramic Coated
Flange Style:
Standard
Primary Tube Diameter:
1-7/8"
Material Type:
Steel
Color:
Silver
Weld-Up:
No
MFG. Part #:
D743
Collector Diameter:
3-1/2 Inch
Hardware Included:
Yes
Gasket(s) Included:
Yes
Sold in Quantity:
Pair
GTIN Code:
694342519384

Info

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

Application

1968-1969 Oldsmobile 442 6.6L/400 V8
1968-1971 Oldsmobile 442 7.5L/455 V8
1975 Oldsmobile Cutlass Salon 7.5L/455 V8
1968-1969 Oldsmobile Cutlass 6.6L/400 V8
1968-1974 Oldsmobile Cutlass 7.5L/455 V8
1975 Oldsmobile Delta 88 6.6L/400 V8
1971-1975 Oldsmobile Delta 88 7.5L/455 V8
1968-1969 Oldsmobile Vista Cruiser 6.6L/400 V8
1970-1974 Oldsmobile Vista Cruiser 7.5L/455 V8

Notes

  • Doug's Headers D743 1 7/8" 4-Tube Full Length Header Olsmobile Cutlass 455 65-75 Metallic Ceramic Coating
  • Ceramic Coated
  • Collector: 3 1/2
  • Port Shape: SAP
  • Primary Tube: 1 7/8
  • emissions code: legal only for off-highway use (except in California or states that have adopted California emission standards)
  • with A/C
  • with Floor Shifter

Charts

Installation Instructions (PDF)

Important Messages

  • This item ships directly from the manufacturer. It may take an additional 15 business days for Dougs Headers to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
Some parts are not legal for use in California or other states with similar laws/regulations

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Videos & Articles
  • Watch our video on the ceramic coating process for Armor Hot Coating. Headers coated with Armor Hot Coating protect your car without sacrificing looks.
  • Maintaining your headers is an important part of any hot rod. Pat gives some tips and demonstrates how well Purple Metal Polish works for keeping your headers looking great.
  • Jeremy explains the different options of headers that Speedway Motors offers for Demolition Derby cars. Watch this video to see a variety of options and the benefits of certain headers.
  • Hooker headers are installed in a 1967 Pontiac Firebird for increased power and a boost in performance. See how to work through fitment of the steering box, clutch Z bar and starter.

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