Speedmaster®
Turbo 400 TH400 Standard Length Output Shaft and Tail Housing Combo
Product Information
Overview
These Speedmaster tailshaft housings are designed to fit the stock Turbo 400 transmissions. They are five times stronger and more ridged than stock because they are made from aircraft grade aluminum alloy. Featuring thicker walls and more gusseting than any other manufacturer.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE598.1006.04 |
| Part Type: | Automatic Transmission Tailhousing |
| Tailshaft Material: | Aluminum |
| Tailshaft Finish: | Natural |
| Hardware Included: | No |
| Tailshaft Housing Bushing Included: | No |
| Tailshaft Housing Seal Included: | No |
| Output Shaft Material: | 8620 Steel |
| Output Shaft Length: | Standard (6.0in.) |
| Supports Speedometer: | Yes |
| Supports Governor: | Yes |
| Quantity: | Sold as a kit |
| Notes: | Designed to Convert 4x4 Core Into a 6" Tail Core |
Description
Speedmaster one-piece 8620 Steel output shafts are the perfect upgrade to improve the performance of your automatic transmission. These durable output shafts can withstand power level increases in high-horsepower vehicles.
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.


