2018 Cadillac CTS Left Hand Engine Mount Insulator Used OEM 23340399 Genuine Cadillac OEM Engine Mount Insulator (part number 23340399). This component is a…
Product description
2018 Cadillac CTS Left Hand Engine Mount Insulator Used OEM 23340399
Genuine Cadillac OEM Engine Mount Insulator (part number 23340399). This component is a critical isolation element in the engine mounting system, situated between the engine's mounting bracket and the vehicle's frame. Its primary function is to dampen engine noise and vibrations for a smoother ride. This specific mount is for the Left Hand (Driver's Side) and is confirmed to be compatible with your 3.6L V6 (LGX) engine.
Details:
VIN: 1G6A85SX2K0104094
Part Number: 23340399 (OE 23340399).
Compatibility: Confirmed compatible with your 2018 Cadillac CTS 3.6L V6 (LGX) engine.
Function: Dampens engine vibration and supports the engine's weight.
Position: Left Hand (Driver's Side).
Condition: Used OEM, tested and in good working condition
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Always buy OEM!
OEM parts are built to factory specifications, ensuring the right fit, performance, and safety compared to aftermarket alternatives. We sell parts pulled from the vehicles. They are 100% compatible with original part numbers incase if you are looking to substitute part, please check with your car's part number and catalog.
⚠️ Fitment Note: Please verify compatibility with your vehicle’s VIN before purchase.
Vehicle compatibility
Verified fitment — high-confidence structured evidence
Compatibility table8 vehicles
Compatibility is expanded from the OE number’s donor vehicle to the matching MVL chassis generation (all listed trims/engines/years). When in doubt, match the OE number against your vehicle’s parts catalog or ask our team.
Technical details
- Category
- Engine Mounts
- Brand
- Cadillac
- Manufacturer part number
- 23340399
- Condition
- Used
- Part source
- OEM
- Position
- Left
- Placement
- Left
- Brand type
- Cadillac
- Country of origin
- United States
Photos show the actual item where provided by the seller. Report inaccurate listings to our team.

