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GM 25056381 Catalytic Convertor

1982-1985 GM

Customer Questions & Expert Answers (4)
GM 25056381 Catalytic Convertor
  • Part Description
    Converter, Catalytic Converter
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number25056381
    Part DescriptionConverter, Catalytic Converter
    Other NamesCatalytic Converter
    Item Dimensions26.6 x 9.1 x 4.8 inches
    Item Weight15.10 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU25056381
    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
    1983-1984 Chevrolet Camaro8 Cyl 5.0L2 DOOR
    1982-1985 Chevrolet Caprice6 Cyl 3.8L, 8 Cyl 5.0L4 DOOR, CLASSIC 2 DOOR, CLASSIC 4 DOOR, CLASSIC STATION WAGON
    1984 Chevrolet El Camino6 Cyl 3.8LEL CAMINO, MONTE CARLO
    1982-1985 Chevrolet Impala6 Cyl 3.8L, 8 Cyl 5.0L4 DOOR, CLASSIC 2 DOOR, CLASSIC 4 DOOR, CLASSIC STATION WAGON
    1984 Chevrolet Monte Carlo6 Cyl 3.8LEL CAMINO, MONTE CARLO
    1984 Pontiac Bonneville6 Cyl 3.8L, 8 Cyl 5.0L2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, LE 2 DOOR
    1983-1984 Pontiac Firebird8 Cyl 5.0L2 DOOR
    1984 Pontiac Grand Prix6 Cyl 3.8L, 8 Cyl 5.0L2 DOOR, 4 DOOR, BROUGHAM 2 DOOR, LE 2 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. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 25056381 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace a catalytic converter on Chevrolet Caprice? Posted by Customer
    A:
    The catalytic converter is an emission control device that reduces hydrocarbon and carbon monoxide pollutants in the exhaust system. It contains beads coated with platinum and palladium, and it is important to use only unleaded gasoline to prevent lead contamination and reduce combustion chamber deposits and corrosion. While periodic maintenance is not required, it is advisable to inspect the converter and related exhaust components during other service. If the converter is ineffective, it can be replaced or the coated beads can be drained and replaced. Caution should be exercised when working near the converter due to its high temperatures, and proper lifting pads should be used to avoid damage. There are no functional tests for the home mechanic to determine if the converter is working properly. In the rare event that the converter needs to be replaced, the car should be raised and supported securely, and the converter should be disconnected at the front and rear using penetrating oil if necessary. The inlet and outlet converter flanges can then be separated from the exhaust pipes, and the converter can be removed from under the vehicle. Installation is the reverse of the removal process, using new nuts and bolts. There are two types of catalytic converters, and if the monolith converter fails, it must be replaced entirely. The catalyst in bead type converters can be changed by draining and filling the beads through a plug at the bottom of the converter. This process is best done by a dealer with specialized equipment, but it can also be done with the converter removed from the car. To fill the converter with new beads, it should be raised at a 45-degree angle and the beads should be poured in while tapping lightly on the converter belt. A special service fill plug is required to replace the stock one, and it should be installed according to the provided instructions. Finally, the converter should be installed, the engine started, and checked for leaks.
    Posted by GMPartsGiant Specialist
    Q:
    What is the function of the catalytic converter, and what materials does it contain of the 1984 Chevrolet El Camino? Posted by Customer
    A:
    The catalytic converter is an emission control device that reduces hydrocarbon and carbon monoxide pollutants in the exhaust system. It contains beads coated with platinum and palladium.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Catalytic Converter
    Q:
    What is the process for removing the tailpipe for the 1983 Pontiac Firebird? Posted by Customer
    A:
    The tailpipe is part of the muffler assembly. To remove it, take out the bolts and nuts connecting the muffler to the intermediate exhaust pipe. Then, remove the muffler/tailpipe assembly rear hanger bolts to separate it from the vehicle, ensuring to use new nuts and bolts during reinstallation.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Catalytic Converter
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 25056381, the Right Choice

To ensure reliability, purchase GM part # 25056381 Catalytic Convertor. It is sometimes referred to as GM Catalytic Converter. 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 Chevrolet Camaro, Caprice, Impala models. It fits Pontiac Bonneville, Firebird, Grand Prix.

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