Speedmaster GM TH400 Forward Clutch and Direct Clutch Assembly PCE623.1018.01

The Speedmaster GM TH400 Forward Clutch and Direct Clutch Assembly (PCE623.1018.01) is a transmission component designed for General Motors TH400 automatic transmissions. This assembly houses the forward and direct clutch mechanisms and is supplied without the individual clutch friction and steel plates, making it ideal for builders and shops that source clutch packs separately or require replacement of the assembly housing itself.

This standard-duty assembly is essential for TH400 transmission rebuilding and repair work. The part number PCE623.1018.01 ensures direct fitment to OEM specifications, delivering reliable performance in street, strip, and racing applications where transmission durability and shift quality are critical. Whether you're performing a complete rebuild or replacing a worn or damaged clutch assembly, this Speedmaster component provides the foundation for a solid transmission platform.

Key Features & Benefits

• TH400 Transmission Fit: Engineered specifically for General Motors TH400 automatic transmissions.
• Without Clutches: Supplied as housing assembly only; clutch friction and steel plates sold separately.
• Standard Duty Rating: Built to factory specifications for reliable performance in typical driving conditions.
• OEM Part Compatibility: Direct replacement meeting GM TH400 transmission rebuild requirements.

Specifications

Ideal Applications

• TH400 transmission complete rebuild and restoration
• Transmission repair and clutch assembly replacement
• Street and performance transmission applications
• Racing and high-performance transmission builds