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Buick 25043526 Valve,Crankcase Vent

1982-1985 Buick

Customer Questions & Expert Answers (3)
25043526 GM Valve,Crankcase Vent Illustration 1 of 1
  • Part Description
    REGULATOR, Engine Crankcase
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Buick
    Manufacturer Part Number25043526
    Part DescriptionREGULATOR, Engine Crankcase
    Item Dimensions4.1 x 3.9 x 4.0 inches
    Item Weight0.70 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU25043526
    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
    1982-1985 Buick Century6 Cyl 4.3L DieselCUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR
    1985 Buick Electra6 Cyl 4.3L Diesel2 DOOR, 4 DOOR, COUPE 2 DOOR, SEDAN 4 DOOR, T-TYPE COUPE 2 DOOR, T-TYPE SEDAN 4 DOOR
  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you.
    A:
    You can Select Your Vehicle to check if 25043526 fits your vehicle.
    Posted and answered by GM Parts Specialist Henry
    Q:
    How does the EGR Valve function in the 1982 Buick Century? Posted by Almir C.
    A:
    The EGA valve, controlled by carburetor vacuum, opens and closes to mix exhaust gases with the fuel/air mixture, maintaining the right proportions to prevent misfire or pinging at part throttle. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Apr 21, 2026
    Q:
    How does the system, including the EGR Valve, mitigate peak temperatures and NOx formation for the 1982 Oldsmobile Cutlass? Posted by Nevan B.
    A:
    A small amount of exhaust gas is recirculated back into the combustion cycle through additional passages integrated into the intake manifold, keeping most routing components concealed. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Aug 27, 2025

Genuine GM Part 25043526, the Right Choice

To ensure reliability, purchase GM part # 25043526 Valve,Crankcase Vent. It is sometimes referred to as Buick EGR Valve, Buick PCV Valve. 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 Buick Century, Electra models.

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