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GM 20921540 Mount Insulator

2010-2017 GM

Customer Questions & Expert Answers (3)
20921540 GM Mount Insulator Illustration 1 of 1
  • Part Description
    Insulator, Engine Mount Dampening
  • Manufacturer
    General Motors
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number20921540
    Part DescriptionMount Insulator; Insulator, Engine Mount Dampening
    Item Dimensions4.9 x 1.8 x 0.1 inches
    Item Weight3.90 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU20921540
    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
    2012-2015 Chevrolet Captiva Sport4 Cyl 2.4LSPORT LS FWD, SPORT LT FWD
    2010-2017 Chevrolet Equinox4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.6LLS SUV, LT SUV, LTZ SUV
    2010-2017 GMC Terrain4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.6LSLE1 SUV, SLE2 SUV, SLT SUV
  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you.
    A:
    You can Select Your Vehicle to check if 20921540 fits your vehicle.
    Posted and answered by GM Parts Specialist Henry
    Q:
    What is the next step after disconnecting the front Engine Mount for the 2010 Chevrolet Equinox? Posted by Katrina D.
    A:
    Remove the bolts from the transmission and then take out the mount. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Fernando / May 14, 2025
    Q:
    What is the procedure for replacing Engine Mounts for the 2014 GMC Terrain? Posted by Akinwale T.
    A:
    For replacement, ensure the engine transaxle assembly is balanced in weight distribution among the powertrain mounts before tightening the mounting bolts. Loosen all mount bolts, shake the engine side to side and front to rear to settle it, and then tighten the mounts in a specific order. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Nov 03, 2025

Genuine GM Part 20921540, the Right Choice

To ensure reliability, purchase GM part # 20921540 Mount Insulator. It is sometimes referred to as GM Engine Mount. 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 Captiva Sport, Equinox models. It fits GMC Terrain.

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