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Buick 8999642 Catalytic Convertor

1982-1985 Buick

Customer Questions & Expert Answers (6)
GM 8999642 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 Buick
    Manufacturer Part Number8999642
    Part DescriptionConverter, Catalytic Converter
    Other NamesCatalytic Converter, Converter, Pipe
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU8999642
    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 Estate Wagon6 Cyl 3.8LCUSTOM 2 DOOR, CUSTOM 4 DOOR, ELECTRA ESTATE WAGON, ESTATE WAGON, LIMITED 2 DOOR, LIMITED 2 DOOR COLLECT SP EDIT, LIMITED 4 DOOR, LIMITED 4 DOOR COLLECT SP EDIT
    1982-1985 Buick Lesabre6 Cyl 3.8LCUSTOM 2 DOOR, CUSTOM 4 DOOR, ELECTRA ESTATE WAGON, ESTATE WAGON, LIMITED 2 DOOR, LIMITED 2 DOOR COLLECT SP EDIT, LIMITED 4 DOOR, LIMITED 4 DOOR COLLECT SP EDIT
    1982-1983 Buick Regal6 Cyl 3.8L, 6 Cyl 4.1L, 6 Cyl 4.3L Diesel, 8 Cyl 5.7L Diesel2 DOOR, 4 DOOR, STATION WAGON
  • Customer Questions & Expert Answers

    Q:
    Do these parts fit my vehicle? Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 8999642 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to maintain a catalytic converter on 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, and it is important to use unleaded gasoline to prevent lead contamination and corrosion. While periodic maintenance is not required, it is advisable to inspect the converter 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 on the converter due to its high temperatures. The removal process involves disconnecting the converter from the exhaust pipes and gently separating the flanges. Installation is the reverse of removal, using new nuts and bolts. There are two types of catalytic converters, and the monolith converter must be replaced entirely if it fails. The catalyst in bead-type converters can be changed by draining and filling the beads. This process is best done by a dealer with specialized equipment. To fill the converter with new beads, it should be raised at an angle and tapped lightly while pouring in the beads. A special service fill plug is required for installation. Once installed, the engine should be started and checked for leaks.
    Posted by GMPartsGiant Specialist
    Q:
    What is the purpose of a catalytic converter and how should it be maintained on Oldsmobile Cutlass? Posted by Customer
    A:
    The catalytic converter is an exhaust system component used to control emission of hydrocarbon and carbon monoxide pollutants; the beads used in the current invention are coated with platinum and palladium. It is advisable to use unleaded gasoline only for vehicles fitted with this converter in order to reduce combustion chamber deposit and avoid lead poisoning of the catalyst. In general, there is no demand for frequent maintenance, but it is suggested to check the converter and other linkages of exhaust during other servicing work. Should an official inspection prove the converter to be ineffectual, then it may be replaced or the coated beads may be drained and replaced; and physical damage, or inadvertently using leaded fuel as possible causes of malfunction. Due to the working temperature the converter can generate, any work should only be done after allowing it to cool down while when lifting the vehicle care should be taken not to damage this part. It is unusual to remove it but if it is necessary the car has to be raised securely enough and the catalytic converter has to be cooled, it is then disconnected at the front and the rear section while if the fasteners are frozen they can be cut off. Removal is done in the exact process using new nuts and bolts after loosening them appropriately. There are two types of converters: monolith converters which if break have to be replaced while bead type converters that have a bead replacement plug. Bead replacement is commonly done with the converter disconnected, whereby the fill plug is unscrewed, the previous beads are drained and replaced with new beads and the system tapped to allow the beads to settle down. A reinstallation fill plug is used in a special operation as there are steps that require to be taken to ensure the seal of the speaker. After installation of the exhaust, engine should be started for the purpose of checking leakage.
    Posted by GMPartsGiant Specialist
    Q:
    What is the location and composition of the catalytic converter in the 1981 Buick Century? Posted by Customer
    A:
    The catalytic converter is located midway in the exhaust system and is made of stainless steel with an aluminized steel cover and a ceramic felt blanket for insulation from the floor-pan.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Catalytic Converter
    Q:
    What needs to be done to remove the catalyst for the 1982 Buick Regal? Posted by Customer
    A:
    Remove bolts at the flange at the rear end, loosen nuts, remove U-clamp, and slide the catalyst out of the outlet pipe.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Catalytic Converter
    Q:
    How can a catalytic converter be replaced if necessary of the 1983 Chevrolet Caprice? Posted by Customer
    A:
    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.
    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 8999642, the Right Choice

To ensure reliability, purchase GM part # 8999642 Catalytic Convertor. It is sometimes referred to as Buick 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 Buick Estate Wagon, Lesabre, Regal models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 8999642 Catalytic Convertor. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed Buick parts information, click here.

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