Speedmaster®
GM Turbo TH400 Billet Aluminum Piston Direct Forward
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Product Information
Overview
This lightweight billet aluminum replacement for the hard to find OEM replacement isn't only a more cost effective way to go but also adds a performance advantage. The piston weighs approximately 55% less than the OEM counterparts and designed to hold up to 6 clutches. Utilizes a 34 element Sprag Assembly.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE623.1006 |
| Part Type: | Automatic Transmission Drum |
| Transmission Piston Material: | 7075-T6 Billet Aluminum |
| Sprag Assembly Included: | No |
| Height (in.): | 1.477 in. |
| Quantity: | Sold individually |
| Notes: | Takes a 34 element high performance sprag. Will work with forward or direct drum. |
Warranty Information
12-Month Limited Worldwide Warranty
Prop 65 Warning
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Installation Guide
Our AI assistant generates a step-by-step guide for this product — covering installation, maintenance, and troubleshooting.
This AI-generated guide is for general reference only and does not constitute official Speedmaster product documentation. Always verify fitment, torque specifications, and safety requirements before installation.