Sonnax 74574-HD Heavy Duty Overrun Clutch Hub for 4L60-E 4L65-E 4L70-E Transmissions

The Sonnax 74574-HD heavy duty overrun clutch hub features high strength steel and thicker material for trouble-free performance when applying deceleration engine braking in D3, D2 or D1 ranges. Manufactured from high-strength 4140 chromoly steel, this upgraded component is engineered to prevent common failure points in performance and heavy-duty transmission applications.

Key Features:

• 2X thicker than OE clutch hubs to prevent cracking and breaking in critical areas that engage the input sprag inner race
• High-strength 4140 chromoly steel construction for maximum durability
• Direct replacement design for easy installation
• Prevents hub failure in performance applications and heavy-duty use

Application:

This hub is a direct replacement for '95-later 4L60-E, 4L65-E, 4L70-E hubs and can be installed in a 4L60 (700-R4) when a 95-up sprag assembly is retrofitted. Ideal for performance vehicles, towing applications, and transmissions subject to frequent engine braking.