Hihitomorrow 3.1108G General Transmission Mount – Polyurethane Bracket Set for GM TH350/TH400/700R4

Overview

Upgrade your GM rear transmission mounting with the Hihitomorrow 3.1108G General Transmission Mount. Built from high performance polyurethane and paired with a zinc plated steel bracket, this mount is designed to manage torque and vibration for everyday driving and spirited street use. It aims to deliver a firmer, more controlled road feel without resorting to an overly rigid setup, offering a balanced upgrade over older rubber mounts.

Compatibility at a glance

Engineered for a wide array of GM rear mounts TH350, TH400 and 700R4 transmissions, this bracket set suits classic and late GM platforms alike. It works across numerous models spanning 1963–2001 for Chevrolet transmissions and 1973–2001 GM transmissions, plus compatible Buick, Oldsmobile, Pontiac and Jeep Wrangler applications from era specific lines.

• Fits All GM Rear Mount TH350, TH400 and 700R4 transmissions (the most common configurations).
• Designed to handle the torque and vibration typical of spirited driving and performance use.
• Includes a strong zinc plated steel bracket for added durability in demanding installations.
• Crafted from superior steel and high performance polyurethane for dependable support.
• Package includes 1 mount, 1 zinc plated bracket, 2 bolts, 2 lock washers, and 4 flat washers.

Why polyurethane matters

Polyurethane provides a firmer response than standard rubber while retaining enough give to reduce harshness. In practice, this can help maintain drivetrain alignment under load and minimize unwanted movement when the engine roars to life or when torque peaks occur.

• Improved load handling can contribute to steadier shifts and more predictable throttle response.
• Better resistance to wear than softer rubber makes it suitable for longer service life under demanding use.
• Durable construction supports consistent performance across a range of driving conditions.

Real‑world use and quick notes

In daily driving, expect a steadier feel and reduced transmission shudder as the mount dampens drivetrain movement. For enthusiasts, the setup offers potential for more confident throttle response and controlled vibrations during spirited runs.

Easy installation is supported by included hardware and bracket designed to fit common GM transmissions. Always verify fitment for your specific year and model before ordering.

Customer assurance

Hihitomorrow backs this mount with a 100% satisfaction guarantee. If you have questions or need support, feel free to reach out for assistance.