Gearstar GSTH350L4 TH350 Level 4 4x4 Transmission

The Gearstar TH350 Level 4 4x4 Transmission is a heavy-duty performance automatic transmission built for Chevrolet and GM four-wheel-drive applications that demand exceptional strength and reliability. Based on the legendary Turbo Hydra-Matic 350 platform, this Level 4 transmission is engineered with premium internal upgrades to withstand substantial horsepower and torque increases while delivering dependable performance in the most demanding environments.

Designed for high-performance street trucks, off-road vehicles, towing applications, and custom builds, the Level 4 package features enhanced clutch capacity, strengthened hard parts, and performance-tuned shift characteristics for consistent power delivery and improved durability. Professionally assembled and thoroughly tested, this transmission offers the confidence and reliability needed for serious enthusiasts pushing their drivetrain to the limit.

• Heavy-duty TH350 Level 4 automatic transmission engineered for demanding GM 4x4 applications
• Upgraded internal components provide increased strength and durability for high-horsepower builds
• Enhanced clutch capacity and performance-calibrated shift characteristics deliver consistent operation under load
• Ideal for performance street trucks, towing applications, off-road vehicles, and custom 4x4 projects
• Professionally assembled and tested to ensure reliable power transfer and long-term performance in extreme conditions