Speedmaster GM TH400 Billet Aluminum Intermediate Piston PCE676.1012

The Speedmaster GM TH400 Billet Aluminum Intermediate Piston (model PCE676.1012) is a precision-engineered replacement component designed for GM TH400 automatic transmissions. This billet aluminum piston delivers superior durability and strength compared to stock cast alternatives, making it ideal for high-performance and heavy-duty applications where transmission reliability is critical.

Constructed from billet aluminum, this intermediate piston provides excellent heat dissipation and fatigue resistance, reducing wear during extended operation or aggressive driving. It is a direct OEM-compatible replacement that maintains proper fit and function within the TH400 transmission assembly, ensuring smooth shift quality and consistent performance.

Key Features & Benefits

• Billet Aluminum Construction: Engineered from billet aluminum for superior strength, durability, and heat dissipation compared to cast pistons.
• OEM-Compatible Design: Direct replacement for GM TH400 transmissions with precise engineering to factory specifications.
• Intermediate Piston Application: Designed specifically for the intermediate piston position within the TH400 transmission assembly.
• High-Performance Grade: Ideal for performance builds, racing, and heavy-duty transmission applications requiring enhanced reliability.

Specifications

Ideal Applications

• Performance and racing transmission builds
• Heavy-duty vehicle transmission service and repair
• High-output engine conversions requiring transmission upgrades
• Transmission overhaul and restoration projects