Speedmaster GM TH400 Direct Clutch Assembly with Hub STD PCE623.1022.01

The Speedmaster GM TH400 Direct Clutch Assembly with Direct Clutch Hub (STD, model PCE623.1022.01) is a precision replacement component designed for GM TH400 automatic transmission rebuild and repair applications. This assembly includes the direct clutch hub and is engineered to restore proper engagement and power delivery in transmissions that have experienced wear or failure of the original clutch pack.

This direct clutch assembly is essential for DIY and professional transmission rebuilders who need reliable OEM-specification parts. The standard (STD) configuration ensures compatibility with stock TH400 transmissions across a wide range of GM vehicles. Proper installation of this clutch assembly restores smooth shift quality, eliminates clutch slippage, and extends transmission lifespan. Whether you're performing a full rebuild or replacing a failed clutch pack, this Speedmaster component delivers the quality and fit needed for dependable performance.

Key Features & Benefits

• GM TH400 Compatibility: Engineered for direct fit into GM TH400 automatic transmissions without modification.
• Includes Direct Clutch Hub: Complete assembly contains the clutch hub, reducing the need to source multiple components separately.
• Standard Configuration: STD specification ensures compatibility with original equipment design parameters.
• Transmission Rebuild Essential: Critical replacement part for restoring clutch engagement and power delivery in worn or failed transmissions.
• Professional Grade Quality: Speedmaster brand delivers precision engineering for reliable transmission performance.

Specifications

Ideal Applications

• GM TH400 automatic transmission full rebuild and repair
• Replacement of worn or slipping direct clutch pack in existing TH400 transmissions
• DIY and professional transmission restoration projects
• Custom and classic vehicle transmission restoration