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Doug's Headers Metallic Ceramic Coated Headers 1973-1978 Oldsmobile 403-455

Doug's Headers D755Y


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Doug's Headers Metallic Ceramic Coated Headers 1973-1978 Oldsmobile 403-455 $606.99
Metallic Ceramic Coated Headers
  • 1973-1978 Oldsmobile 403-455
  • 1-3/4'' to 2'' Tube Diameter
  • 3'' Collector
  • SAP Port Shape
  • Tri-Y Design

  • Doug's Headers D755Y Details

    Oldsmobile 403-455

  • Fits 1973-1978 Chevrolet chassis (Class A)
  • Front wheel drive only

    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.

    Y Y Y Y Y N N

  • Specifications:

    Manufacturer's Part Number:

    Chevrolet Chassis Class A Motorhome Headers

    Every Doug's Header is tuned with the proper tube size and length to efficiently remove exhaust gas from each cylinder. Necessary mounting hardware, gaskets, and collector reducers or connection pipes included.

  • Heavy-gauge, mandrel-bent tubing offers accurate fit, better flow, and longer life
  • Thick flanges eliminate warping
  • Stitch-welded ports add strength
  • Machined sealing bead prevents leaks
  • Precision-formed collectors reduce backpressure
  • Available uncoated (raw) or with a metallic ceramic thermal barrier
  • Metallic coating withstands up to 1400° and is polished to increase corrosion resistance over 60%

  • Is the headers for the 1973-78 GMC motorhome with the 455 and later 403 Olds engines and the Th425 front wheel drive transmission ? I ask as your description is kind of confusing, Chevrolet never made the chassis for those RVs it was built by GMC

    Asked by: Loffen
    Yes, that is what these were designed for, they are using Chevy and GMC interchangeably.
    Answered by: Rusty B
    Date published: 2017-11-10
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    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations