Description
Product Overview
The ACDelco Transmission Mount is a precision‑engineered component designed to replace the original equipment part in GM vehicles. Featuring a robust black machined exterior, this mount is built from high‑strength steel and includes a rubber isolator to absorb vibrations. Key specifications include an 8‑inch depth, 3.95‑pound weight, and a vehicle‑specific fit that aligns with surrounding components for optimal performance.
Usage

This mount is ideal for daily commuters, fleet vehicles, and performance‑oriented drivers who demand a stable drivetrain. Install it during routine transmission service or when replacing a worn mount to restore ride comfort and protect the drivetrain from harsh impacts.
Why Choose Us
ACDelco delivers GM‑approved quality, matching OEM specifications for durability and fit. Our mounts undergo rigorous testing to ensure they meet or exceed original part performance, providing peace of mind and long‑term reliability.
Key Features
- Black machined steel construction for superior strength
- Integrated rubber isolator reduces drivetrain vibration
- Vehicle‑specific design ensures perfect alignment with GM models
- OEM part number 20839834 guarantees direct factory replacement
- Lightweight (3.95 lb) yet robust for demanding driving conditions
FAQ
Is this mount compatible with all GM vehicles?
The mount is engineered for specific GM models as indicated by the OEM part number 20839834. Verify your vehicle’s compatibility using the fit guide or VIN lookup.
Can I install the mount myself?
Yes, with basic hand tools and a service manual. However, professional installation is recommended to ensure proper torque and alignment.
What warranty does ACDelco provide?
ACDelco offers a limited warranty covering defects in material and workmanship for a period specified in the product documentation.
How does this mount improve ride quality?
The built‑in rubber isolator dampens vibrations from the transmission, resulting in a smoother, quieter ride and reduced wear on surrounding components.
Will this mount affect fuel efficiency?
By maintaining proper transmission alignment and reducing vibration, the mount can help the engine run more efficiently, potentially offering a modest improvement in fuel economy.




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