Speedmaster 4.250" Bore Piston Oil Ring Rail Spacer Support 0.030" Thick Set of 8 PCE308.1003

The Speedmaster PCE308.1003 is a set of eight piston oil ring rail spacer supports designed for 4.250" bore engines. These precision components, each 0.030" thick, provide critical support and proper spacing for piston oil ring rails during engine assembly and rebuild operations. They ensure correct ring positioning and oil control within the combustion chamber.

These spacer supports are essential for maintaining proper ring gap clearance and preventing ring binding or rotation during engine operation. The set of eight accommodates a full engine build or replacement of worn spacers. Machined to exact specifications for reliable fitment and performance, these Speedmaster parts are a trusted choice for engine builders and restoration professionals seeking OEM-quality components.

Key Features & Benefits

• 4.250" Bore Fit: Engineered for 4.250" bore engines.
• 0.030" Thickness: Precise 0.030" thickness specification for accurate ring rail spacing.
• Set of Eight: Complete set of eight spacer supports per package.
• Engine Rebuild Component: Essential part for piston ring assembly during engine rebuild and restoration.

Specifications

Ideal Applications

• Engine rebuild and restoration
• Piston ring assembly and replacement
• Engine block machining and preparation
• Performance engine build