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Buick 7843451 Ignition Switch

1982-1991 Buick

Customer Questions & Expert Answers (3)
7843451 GM Ignition Switch Illustration 1 of 1
  • Part Description
    Switch, Ignition Switch
  • 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 Number7843451
    Part DescriptionIgnition Switch; Switch, Ignition Switch
    Item Dimensions7.2 x 4.5 x 4.6 inches
    Item Weight0.90 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU7843451
    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
    1982-1990 Buick Century4 Cyl 2.5L, 6 Cyl 2.8L, 6 Cyl 3.0L, 6 Cyl 3.3L, 6 Cyl 3.8L, 6 Cyl 4.3L DieselCUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR
    1987-1990 Buick Electra6 Cyl 3.8L, 8 Cyl 5.0LCOUPE 2 DOOR, LIMITED 2 DOOR, LIMITED 4 DOOR, SEDAN 4 DOOR, T-TYPE COUPE 2 DOOR, T-TYPE SEDAN 4 DOOR, ULTRA SEDAN 4 DOOR
    1987-1990 Buick Lesabre6 Cyl 3.8L2 DOOR, 4 DOOR, CUSTOM 2 DOOR, CUSTOM 4 DOOR, LIMITED 2 DOOR, LIMITED 4 DOOR
    1982-1987 Buick Regal6 Cyl 3.8L, 6 Cyl 4.1L, 6 Cyl 4.3L Diesel, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel2 DOOR, 4 DOOR, REGAL, STATION WAGON
    1984-1989 Buick Skyhawk4 Cyl 1.8L, 4 Cyl 2.0L2 DOOR, 4 DOOR, CUSTOM 2 DOOR, CUSTOM 2 DOOR NOTCHBACK, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR, LIMITED WAGON, SPORT 2 DOOR, STATION WAGON, T-TYPE 2 DOOR
    1984-1991 Buick Skylark4 Cyl 2.3L, 4 Cyl 2.5L, 6 Cyl 2.8L, 6 Cyl 3.0L, 6 Cyl 3.3L2 DOOR, 4 DOOR, CUSTOM, CUSTOM 2 DOOR, CUSTOM 4 DOOR, GRAN SPORT 2 DOOR, LIMITED, LIMITED 2 DOOR, LIMITED 4 DOOR, LUXURY EDITION 4 DOOR, SKYLARK, SOMERSET, T-TYPE
    1985-1987 Buick Somerset4 Cyl 2.5L, 6 Cyl 3.0L2 DOOR, CUSTOM, LIMITED, LIMITED 2 DOOR, LIMITED 4 DOOR, REGAL, REGAL LIMITED, SOMERSET, T-TYPE
  • Customer Questions & Expert Answers

    Q:
    Will this part number fit my car?
    A:
    You can Select Your Vehicle to check if 7843451 fits your vehicle.
    Posted and answered by GM Parts Specialist Syed
    Q:
    In what position should the Ignition Switch be set before removal for the 1984 Buick Century? Posted by Zheer J.
    A:
    The switch should be placed in the OFF, unlocked position, which is two detents from the top, while the rod is in the lock position next to the uppermost detent. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Fernando / Oct 01, 2025
    Q:
    How can the Ignition Switch be removed in the 1985 Oldsmobile Cutlass? Posted by Tayla M.
    A:
    The ignition switch can be removed by unscrewing two screws after setting it to the 'LOCK' position. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Xavier / Dec 07, 2023

Genuine GM Part 7843451, the Right Choice

To ensure reliability, purchase GM part # 7843451 Ignition Switch. It is sometimes referred to as Buick Ignition Switch. 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, Lesabre, Regal models.

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