Speedmaster GM 4L80 Stock Spline Automatic Transmission 300M Input Shaft PCE602.1009

The Speedmaster GM 4L80 Stock Spline Automatic Transmission 300M Input Shaft (PCE602.1009) is a high-strength replacement input shaft designed for GM 4L80 transmission builds and rebuilds. The 300M material construction provides superior durability and reliability for both stock and modified engine applications, making it an essential component for transmission shops and performance builders.

This stock spline input shaft is engineered to OEM specifications and is commonly used in transmission overhauls, restorations, and performance upgrades. The 300M alloy steel construction delivers the strength needed to handle increased torque loads while maintaining compatibility with factory 4L80 transmission housings. Whether you're rebuilding a stock transmission or upgrading a performance vehicle, this input shaft offers the dependability required for long-term operation.

Key Features & Benefits

• 300M Material Construction: High-strength 300M alloy steel provides superior durability and load-carrying capacity for transmission applications.
• GM 4L80 Compatibility: Engineered to OEM specifications and designed specifically for GM 4L80 automatic transmission builds and rebuilds.
• Stock Spline Design: Factory-style stock spline pattern ensures proper engagement and reliable power delivery in standard 4L80 transmissions.
• Transmission Rebuild Applications: Ideal for transmission overhauls, restorations, and performance upgrades requiring a quality replacement input shaft.

Specifications

Ideal Applications

• Transmission rebuild and overhaul projects
• Performance engine and transmission upgrades
• Stock transmission restoration and repair
• Torque converter and driveline assembly