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Doug's Headers D522-R Full Length Header, 2 In, 68-72 GTO, Raw
Doug's Headers D522-R Full Length Header, 2 In, 68-72 GTO, Raw

Doug's Headers D522-R Full Length Header, 2 In, 68-72 GTO, Raw

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Doug's Headers D522-R Full Length Header, 2 In, 68-72 GTO, Raw
Doug's Headers D522-R Full Length Header, 2 In, 68-72 GTO, Raw
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We estimate this item will ship on or before March 20th.
Part # 447D522R
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 2 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.


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Doug's PASSENGER CAR HEADERS Long Tube Raw Steel Header 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 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 is left unfinished (raw steel) for individual customizing


1968-1971 Pontiac GTO 6.6L/400 V8
1970-1972 Pontiac GTO 7.5L/455 V8
1968-1971 Pontiac LeMans 5.7L/350 V8
1968-1971 Pontiac LeMans 6.6L/400 V8
1970-1971 Pontiac LeMans 7.5L/455 V8
1968-1969 Pontiac LeMans 7L/428 V8
1968-1970 Pontiac Tempest 5.7L/350 V8
1968-1970 Pontiac Tempest 6.6L/400 V8
1969 Pontiac Tempest 7L/428 V8


  • Doug's Headers D522-R 2" 4-Tube Full Length Header Pontiac GTO 400-455 68-72 Raw Steel
  • Raw Steel
  • Collector: 3 1/2
  • Port Shape: RD
  • Primary Tube: 2
  • legal for off-highway use (exc. in Calif. or states using Calif. emission standards)
  • Fits Edelbrock Performer
  • RAM-Air
  • Super Duty and H.O. heads only
  • HO/SD engine
  • with A/C
  • with Floor Shifter
Some parts are not legal for use in California or other states with similar laws/regulations

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