Looking for a low profile transmission mount that reduces vibration without sacrificing durability? This guide highlights five top options aligned with common GM rear-wheel-drive setups and popular trucks. Each pick targets a different use case—from street performance to drag-ready builds—so you can choose the best fit for your vehicle and driving style. The selections cover polyurethane and aluminum constructions, balancing rigidity and weight. Use the quick table below to compare key notes at a glance.
| Product | Best For | Material | Notes |
|---|---|---|---|
| Energy Suspension 3.1158G Gm Transmission Mount – Short | Street performance, OEM-like fit | Polyurethane | High quality, professional-grade |
| 3.1158G Universal Transmission Mount Short Mount Fits for Jeep Wrangler YJ, Buick, Chevrolet, GMC, Oldsmobile & Pontiac | Versatile GM rear-drives, mixed applications | Polyurethane | Wide compatibility |
| Bruce & Shark Aluminum Transmission Mount 551404 | High torque, drag and performance builds | Aluminum | Broad GM compatibility |
| 3.1108G General Transmission Mount Performance Polyurethane Mounts | High-performance street and race | Polyurethane | Strong bracket |
| Solid Aluminum Transmission Mount for GM 551404 | Drag racing, power transfer | Aluminum | Includes mounting bolts |
Energy Suspension 3.1158G Gm Transmission Mount – Short
The Energy Suspension 3.1158G is a short, low-profile transmission mount designed for GM rear-wheel-drive layouts. Best for drivers seeking high performance with durable polyurethane and professional-grade construction. It aligns well with street-driven setups that require reduced vibrations without expanding the mounting footprint. A potential limitation is that this style may not fit all factory brackets; verify compatibility with your specific GM transmission and vehicle year before purchase.
3.1158G Universal Transmission Mount Short Mount Fits for Jeep Wrangler YJ, Buick, Chevrolet, GMC, Oldsmobile & Pontiac
This universal 3.1158G mount is designed for a broad set of GM rear-drive transmissions and several popular models (Jeep Wrangler YJ and more). It uses upgraded polyurethane for better torque handling and vibration control, with a zinc-plated steel backing for durability. Choose this if you need a versatile fit across multiple vehicles. Caution: installation may require checking stud spacing and bracket clearance on older chassis to ensure a proper fit.
Bruce & Shark Aluminum Transmission Mount 551404
The Bruce & Shark 551404 aluminum transmission mount is built for high rigidity and torque handling, making it suitable for drag racing and heavy-duty applications. It supports a wide GM transmission range and emphasizes reduced flex under hard launches. Best for performance-focused builds where weight savings and strength are critical. Limitation: aluminum mounts can be noisier than polyurethane in some driving conditions, and ensure compatibility with your specific transmission model and vehicle year.
3.1108G General Transmission Mount Performance Polyurethane Mounts Bracket Set
This 3.1108G set is designed for GM cars and trucks using TH350, TH400, 700R4, and similar transmissions. It emphasizes performance under torque and vibration from street and racing use, featuring a strong zinc-plated steel bracket for added durability. Best for users who want a ready-to-install, durable polyurethane option with broad GM compatibility. Limitation: may require brackets to align precisely with your vehicle’s chassis and transmission alignment.
Solid Aluminum Transmission Mount for GM 551404 (JomGorg)
The JomGorg solid aluminum mount is designed for GM transmissions including TH350, TH400, 4L60E, 4L80E, 6L80E, and more. It aims to support drag racing and power transfer with a rigid aluminum construction. Best for high-torque, performance-oriented builds where precise power transfer is critical. Caution: aluminum mounts can be more susceptible to vibration under daily driving compared to polyurethane options.
Buying Guide
Key considerations when choosing a low profile transmission mount:
- Material: Polyurethane offers good vibration damping and cost efficiency; aluminum provides greater rigidity and weight savings for high-torque setups.
- Application: Confirm transmission type (TH350, TH400, 700R4, 4L60E, etc.) and vehicle model/year to ensure fitment.
- Durability: Look for mounts with corrosion-resistant finishes and robust brackets for long-term service.
- Installation: Some sets include bolts and hardware; verify if your vehicle needs additional brackets or spacers.
- Driving style: Street-driven cars benefit from polyurethane for balanced comfort and performance, while drag or track-focused builds may favor aluminum for maximum rigidity.
- Fitment notes: Some universal mounts require checking bolt pattern, stud placement, and engine/transmission alignment to avoid rubbing or misalignment.
FAQ
- What is a low profile transmission mount?
A low profile mount is designed to take up less vertical space, helping maintain clearance under the vehicle while still supporting the transmission. - Which material is best for daily driving?
Polyurethane mounts are generally a good balance of stiffness and vibration dampening for daily use. - Do universal mounts fit multiple models?
They offer broad compatibility but always verify exact transmission type, year, and mounting dimensions. - Can aluminum mounts be used for street driving?
Yes, but they may transmit more engine vibrations compared to polyurethane; consider your tolerance and ride quality needs. - Are mounting bolts included?
Some products include bolts; check the product listing to confirm hardware included or required. - How do I know which mount fits my GM transmission?
Identify your transmission model (e.g., TH350, TH400, 700R4, 4L60E) and compare with the mount’s listed compatibility and bracket design.