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Make sure this part fits

Lexus 12371-31440 Engine Mounting Insulator

2016-2022 Lexus 1237131440

Customer Questions & Expert Answers (3)
12371-31440 Lexus Engine Mounting Insulator Illustration 1 of 1
12371-31440 Lexus Engine Mounting Insulator Illustration 1 of 1
  • Part Description
    Insulator, Engine Mounting, Rear
  • Part Name Code
    12371A
  • Position
    Rear
  • Replaced By
    12371-0P320
  • Manufacturer
    Lexus
Make sure this part fits
$124.22 MSRP: $167.98
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  • Specifications
  • Fitment
  • Q&A

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  • Product Specifications

    BrandGenuine Lexus
    Part Name Code12371A
    Manufacturer Part Number12371-31440
    Part DescriptionInsulator, Engine Mounting, Rear
    Other NamesRear Mount
    PositionRear
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerLexus
    SKU12371-31440
    WarrantyThis genuine Lexus part is guaranteed by Lexus's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65

  • Vehicle Fitment

    Year Make Model Trim & Engine Important vehicle option details
    2016-2022 Lexus RX350STD|6 Cyl 3.5L2GRFXS; GYL25L-AWXGBA
    2018-2022 Lexus RX350L6 Cyl 3.5L2GRFXS; GYL26L-ARXGBA
    2016-2022 Lexus RX450hSTD|6 Cyl 3.5L2GRFXS; GYL25L-AWXGBA
    2018-2022 Lexus RX450hL6 Cyl 3.5L2GRFXS; GYL26L-ARXGBA

  • Customer Questions & Expert Answers

    Q:
    I just want to confirm that this is the part I need to replace.
    A:
    You can Select Your Vehicle to check if 12371-31440 fits your vehicle.
    Posted and answered by Lexus Parts Specialist Bernardo
    Q:
    What should be done if movement is noted in the Engine Mounts for the 2016 Lexus RX350? Posted by Logan V.
    A:
    If movement is noted, lower the engine and tighten the mount fasteners. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Lexus Parts Specialist Tommy / Nov 13, 2025
    Q:
    Are there any additional steps for clearance during removal of the Engine Mount for the 2018 Lexus RX350? Posted by Mohit M.
    A:
    Yes, it will be necessary to loosen the mounting nuts on the other powertrain mounts at the subframe to allow the engine to be raised enough for clearance for the driver side mount removal. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Lexus Parts Specialist Steven / Sep 14, 2025

Genuine Lexus Part 12371-31440, the Right Choice

Getting part # 12371-31440 Engine Mounting Insulator helps restore factory performance. It is also referred to as Engine Mount. This part works with 2016-2022 RX350, 2016-2022 RX450h, 2018-2022 RX350L, 2018-2022 RX450hL. Purchasing OEM parts for your vehicle should be your top priority. Manufactured by Lexus, they are built to meet high standards and utilize only top-notch materials for decent reliability and durability.

LexusPartsNow.com offers dependable parts and accessories including 1237131440 Engine Mounting Insulator. Visit our website for the most preferential OEM parts online. Each part is backed by the OEM manufacturer warranty, confirming its high level of quality. We deliver all our parts fast and they come with a straightforward return policy.
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