Filler Neck Block-Off Plate

The Filler Neck Block-Off Plate from MOROSO is a precision aluminum component designed for Chevy V6 and V8 engine builders who need to seal or eliminate water neck openings during engine modifications or custom cooling system configurations. This block-off plate is essential for stroker builds, engine swaps, or systems running alternative cooling architectures.

Manufactured from high-quality aluminum in a natural finish, the Filler Neck Block-Off Plate offers corrosion resistance and lightweight performance, which are critical in engine bays where thermal cycling and coolant exposure occur regularly. The plate's robust structural integrity ensures a reliable seal throughout extended engine operation.

Engine builders, hot rod enthusiasts, and performance shops rely on this block-off plate when fabricating custom cooling systems or closing unnecessary factory passages. It integrates seamlessly into high-performance builds where every detail impacts reliability and performance.