Storage Block Off Exh. Plates - Honda/Acura

The MOROSO Storage Block Off Exhaust Plates for Honda and Acura B-Series engines provide a clean, professional solution for sealing unused exhaust ports when running a modified exhaust configuration. These plates are designed specifically for Honda B-Series engines, making them ideal for engine builders, street tuners, and track enthusiasts.

Fabricated from lightweight aluminum in a natural finish, this pair of blockoff plates eliminates the appearance of open ports while maintaining engine bay aesthetics and preventing unwanted air ingestion into sealed exhaust passages. The aluminum construction resists corrosion and oxidation, ensuring durability while remaining lightweight enough to have no meaningful impact on engine weight distribution.

By sealing unused ports, these plates prevent exhaust leaks that can compromise scavenging efficiency and introduce unmetered air into the system. This solution is standard practice in competition engine builds and modified street vehicles where port configuration changes are necessary. Each pair is ready for installation with no additional modification required.