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Cadillac 12558512 Engine Exhaust Manifold Assembly

2000-2003 Cadillac

Customer Questions & Expert Answers (2)
12558512 GM Engine Exhaust Manifold Assembly Illustration 1 of 1
  • Part Description
    Manifold Assembly, Exhaust ; Manifold, Engine Exhaust Manifold
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Cadillac
    Manufacturer Part Number12558512
    Part DescriptionManifold Assembly, Exhaust ; Manifold, Engine Exhaust Manifold
    Other NamesExhaust Manifold, Manifold
    Item Dimensions14.9 x 8.3 x 3.8 inches
    Item Weight9.00 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12558512
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2000-2003 Cadillac Deville8 Cyl 4.6LDEVILLE, HIGH LUXURY, SEVILLE, SLS, STS, TOURING 4 DOOR
    2000-2003 Cadillac Seville8 Cyl 4.6LDEVILLE, HIGH LUXURY, SEVILLE, SLS, STS, TOURING 4 DOOR
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 12558512 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What is the process for removing the rear Exhaust Manifold for the 2003 Cadillac Deville? Posted by Traian N.
    A:
    Disconnect the rear oxygen sensor harness connector, raise the vehicle, and support it securely on jackstands. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Jun 24, 2025

Genuine GM Part 12558512, the Right Choice

To ensure reliability, purchase GM part # 12558512 Engine Exhaust Manifold Assembly. It is sometimes referred to as Cadillac Exhaust Manifold. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Cadillac Deville, Seville models.

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