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GM 25312171 3-Way Catalytic Convertor Assembly

1998-1999 GM

Customer Questions & Expert Answers (3)
GM 25312171 3-Way Catalytic Convertor Assembly
  • Part Description
    Converter Asm,3Way Catalytic
  • 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 Number25312171
    Part DescriptionConverter Asm,3Way Catalytic
    Other NamesConverter
    Item Dimensions30.9 x 8.9 x 5.8 inches
    Item Weight23.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU25312171
    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
    1998-1999 Chevrolet C15008 Cyl 5.0LC1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX
    1998 Chevrolet C25008 Cyl 5.0LC2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB
    1998-1999 Chevrolet K15008 Cyl 5.0LK1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX
    1998-1999 GMC C15008 Cyl 5.0LC1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX
    1998 GMC C25008 Cyl 5.0LC2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB
    1998-1999 GMC K15008 Cyl 5.0LK1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX
  • 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 25312171 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How can you check if a catalytic converter is restricted or plugged, and what are the steps involved in this diagnostic process for the 1998 Chevrolet C1500? Posted by Customer
    A:
    To check if a catalytic converter is restricted, you can use a vacuum gauge to diagnose the effect of a blocked exhaust on intake vacuum. Here are the steps: Connect a vacuum gauge to an intake manifold vacuum source. Warm the engine to operating temperature and place the transmission in Park with the parking brake applied. Note and record the vacuum reading at idle. Open the throttle until the engine speed reaches about 2000 rpm. Quickly release the throttle and record the vacuum reading. Perform this test three more times, recording the reading after each test. If the reading after the fourth test is more than one inch of mercury (in-Hg) lower than the idle reading, it may indicate a clogged or restricted catalytic converter, muffler, or exhaust pipes.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Catalytic Converter
    Q:
    What is the purpose of a catalytic converter in 1999 Chevrolet K1500 exhaust system, and what type of catalyst is typically used in its design? Posted by Customer
    A:
    The catalytic converter is an emission control device that reduces pollutants in the exhaust gas stream. It typically uses a three-way catalyst design with a catalytic coating containing platinum and rhodium. This design helps lower the levels of oxides of nitrogen (NOx), hydrocarbons (HC), and carbon monoxide (CO).
    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 25312171, the Right Choice

To ensure reliability, purchase GM part # 25312171 3-Way Catalytic Convertor Assembly. 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 C1500, C2500, K1500 models. It fits GMC C1500, C2500, K1500.

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