Speedmaster 5/16" Shaft Mount Rocker Pushrod Lash Adjuster Screw PCE256.1001

The Speedmaster PCE256.1001 is a 5/16" shaft mount rocker pushrod lash adjuster screw designed for engine valve train assembly and maintenance. This fastener is engineered to mount securely on rocker shafts and facilitate precise lash adjustment in pushrod-style valve train systems, ensuring proper valve clearance and optimal engine performance.

This lash adjuster screw is essential for small-block and performance engine builds where accurate valve timing and clearance are critical to combustion efficiency and component longevity. The 5/16" shaft mount design provides a reliable mechanical interface for rocker arm assemblies, making it ideal for both stock rebuild applications and high-performance racing engines. Manufactured by Speedmaster, a trusted name in engine components, this adjuster screw delivers the precision fitment and durability required in demanding automotive powerplant applications.

Key Features & Benefits

• 5/16" Shaft Mount: Designed to fit standard 5/16" rocker shafts for secure mechanical attachment.
• Pushrod Lash Adjustment: Enables precise valve clearance tuning in pushrod-based engine valve train systems.
• Engine Performance: Critical component for maintaining proper valve timing and combustion efficiency.
• Rocker Arm Compatible: Works with rocker arm assemblies in small-block and performance engine configurations.

Specifications

Ideal Applications

• Small-block engine rebuild and assembly
• Valve train lash adjustment and tuning
• High-performance racing engine builds
• Pushrod-style engine maintenance and restoration