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Doug's Headers D590

Metallic Ceramic Coated Headers 1968-1972 Pontiac 326-455 1-3/4" Tube Diameter

Doug's Headers D590

776-D590

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Estimated to ship directly from the manufacturer on 05/31/18
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Doug's Headers D590 Metallic Ceramic Coated Headers 1968-1972 Pontiac 326-455 1-3/4" Tube Diameter $687.99
Metallic Ceramic Coated Headers
  • 1968-1972 Pontiac 326-455
  • 1-3/4'' Tube Diameter
  • 3'' Collector
  • D-Port Port Shape

  • Doug's Headers D590 Details

    Pontiac - 1-3/4'' Tube Diameter

    Fits:

    • 1968-1972 GTO, Le Mans, Tempest

    Notes:

    • Requires removal or modification of locking steering columns if equipped.
    • Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing.

    Emission Code:

    • The product accompanying this document is legal only for off-highway use (except in California or states that have adopted California emission standards), racing use or for use on pre-emission-controlled motor vehicles/motor vehicle engines (pre-1974 domestic vehicles certified to California standards, pre-1974 domestic vehicles certified to federal standards and all pre-1974 foreign vehicles), per the manufacturer's application guide.
    AutomaticManual
    A/CP/BP/SColumnFloorColumnFloor
    Y Y Y N Y N Y

    Specifications:

    Position
    N/A
    Gaskets Included
    Yes
    Collector Diameter (in.)
    3
    Steering System
    Power
    Brake System
    Power
    Bolts/Studs Included
    Yes
    Catalytic Converter(s) Included
    No
    Collector Attachment
    3-bolt flange
    Cross Over Pipe Included
    No
    Cylinder Head Port Shape
    D-port
    Header Finish
    Silver ceramic coated
    Header Material
    Steel
    Header Style
    Full-length
    Motor Mounts Included
    No
    Primary Tube Diameter (in.)
    1 3/4
    Primary Tube Gauge
    16-gauge
    Quantity
    Sold as a pair
    Reducers Included
    Yes
    Transmission Mount Included
    No
    Tuned
    No
    Weld-Up
    No
    Flange Style
    Standard
    Manufacturer's Part Number:
    D590

    Every Doug's Header is Tuned with the Proper Tube Size & Length to Efficiently Remove Exhaust Gasses from Each Cylinder

    Headers feature 3/8'' flanges and 16-gauge tubing on passenger car applications. They include all necessary mounting hardware, collector reducers or connection pipes, premium gaskets and detailed instructions. Headers are available in either a Metallic Ceramic Thermal Barrier Coating or a uncoated raw finish. The Metallic Ceramic Thermal Barrier Coating will withstand up to 1400 degree temperatures! This coating is polished which increases corrosion resistance over 60%!

    Features:
  • Thick Flanges Prevent Warping
  • Stitch Welded Ports for Added Strength
  • Machined Sealing Bead Eliminates Leaks
  • Heavy Gauge Tubing for Longer Life
  • Precision-Formed Collectors Reduce Back Pressure
  • CNC Mandrel-Bent Tubing Provides Accurate Fit & Better Flow

    See More Info for Applications Listing

  • Does Doug's Headers D590 fit your vehicle?

    Narrow Results

    1968-1969 PONTIAC GTO

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971 PONTIAC LEMANS

    • CC: 6555
    • Liter: 6.6
    • SubModel: T37
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970 PONTIAC TEMPEST

    • CC: 5733
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1969 PONTIAC TEMPEST

    • CC: 5733
    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969 PONTIAC TEMPEST

    • CC: 5733
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969-1970 PONTIAC LEMANS

    • CC: 5733
    • Liter: 5.7
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969-1970 PONTIAC LEMANS

    • CC: 6555
    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970-1971 PONTIAC LEMANS

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970-1971 PONTIAC LEMANS

    • CC: 6555
    • Liter: 6.6
    • SubModel: SPORT
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971-1972 PONTIAC GTO

    • CC: 7456
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1970 PONTIAC LEMANS

    • CC: 7456
    • Liter: 7.5
    • SubModel: SAFARI
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1968-1970 PONTIAC TEMPEST

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970-1971 PONTIAC LEMANS

    • CC: 7456
    • Liter: 7.5
    • SubModel: SPORT
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1968 PONTIAC TEMPEST

    • CC: 5733
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970 PONTIAC GTO

    • EngineType: ALL
    • SubModel: ALL

    1971 PONTIAC GTO

    • EngineType: ALL
    • SubModel: THE JUDGE

    1968-1971 PONTIAC LEMANS

    • CC: 5733
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1971 PONTIAC LEMANS

    • CC: 5733
    • Liter: 5.7
    • SubModel: SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971-1972 PONTIAC GTO

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971 PONTIAC LEMANS

    • CC: 5733
    • Liter: 5.7
    • SubModel: T37
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1971 PONTIAC LEMANS

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971 PONTIAC LEMANS

    • CC: 7456
    • Liter: 7.5
    • SubModel: T37
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1968-1969 PONTIAC TEMPEST

    • CC: 6555
    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968-1969 PONTIAC TEMPEST

    • CC: 6555
    • Liter: 6.6
    • SubModel: CUSTOM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968-1969 PONTIAC TEMPEST

    • CC: 5733
    • Liter: 5.7
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969 PONTIAC TEMPEST

    • CC: 5733
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )
    D590 - Doug's Headers for GM Passenger Cars is rated 4.0 out of 5 by 1.
    Rated 4 out of 5 by from Nice set of headers Bought as a direct fit for a 1969 GTO and the left side header required a slight modification to add enough clearance
    Date published: 2018-04-28
    • y_2018, m_5, d_20, h_7
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
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    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations