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GM 84178161 Control Arm

2010-2019 GM

Customer Questions & Expert Answers (3)
84178161 GM Control Arm Illustration 1 of 1
  • Part Description
    Arm, Rear Axle Control Arm
  • Position
    Rear Upper
  • Replaces
    13230593, 22830018
  • Manufacturer
    General Motors
Make sure this part fits
$99.70 MSRP: $170.50
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number84178161
    Part DescriptionControl Arm; Arm, Rear Axle Control Arm
    Item Dimensions19.2 x 6.4 x 3.1 inches
    Item Weight7.10 Pounds
    PositionRear Upper
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces13230593, 22830018
    ManufacturerGeneral Motors
    SKU84178161
    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
    2010-2015 Buick Allure4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.6LCXL 4 DOOR SEDAN, CXS 4 DOOR SEDAN, SPS 4 DOOR SEDAN
    2010-2016 Buick LaCrosse4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.6LCXL 4 DOOR SEDAN, CXS 4 DOOR SEDAN, SPS 4 DOOR SEDAN
    2014-2017 Buick Regal4 Cyl 2.0L, 4 Cyl 2.4LCX 4 DOOR SEDAN, CXL 4 DOOR SEDAN, CXS 4 DOOR SEDAN
    2013-2019 Cadillac XTS6 Cyl 3.6L4 DOOR NOTCHBACK, LUXURY 4 DOOR NOTCHBACK, PLATINUM 4 DOOR NOTCHBACK, PREMIUM 4 DOOR NOTCHBACK
  • Customer Questions & Expert Answers

    Q:
    Do these parts fit my vehicle?
    A:
    You can Select Your Vehicle to check if 84178161 fits your vehicle.
    Posted and answered by GM Parts Specialist Raul
    Q:
    How do you install the lower control arm and Trailing Arm of the 2011 Buick LaCrosse? Posted by Patti K.
    A:
    Raise the outer end of the control arm with a floor jack to simulate normal ride height and tighten the fasteners to their torque specifications. Install the wheel and lug nuts, lower the vehicle, and tighten the lug nuts to the specified torque. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Julian / Jan 17, 2022
    Q:
    How is the installation of the Control Arm done on these 2010 Buick LaCrosses? Posted by Shameeka B.
    A:
    Installation follows the reverse of the removal process with new fasteners and proper tightening. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Feb 24, 2026

Genuine GM Part 84178161, the Right Choice

To ensure reliability, purchase GM part # 84178161 Control Arm. It is sometimes referred to as GM Control Arm, GM Trailing Arm. 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 Allure, LaCrosse, Regal models. It fits Cadillac XTS.

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