SPEED 12XZ PUC Dust Cover Set for Intake Protection - OS21682950 by O.S. Engine  [OS21682950]

PUC intake protector for SPEED 12XZ

The O.S. Engine OS21682950 PUC Dust Cover Set is an intake protection accessory created for SPEED 12XZ engine use. It reduces dust and particulate ingress at the intake opening to help maintain consistent running over multiple sessions.

Compatibility is specific to the SPEED 12XZ designation cited in the product name, so confirm your engine code prior to fitting. The PUC cover sits over the intake area as a barrier against grit and track debris and is not designed to change core engine timing or fuel delivery when installed correctly.

Installation is aimed at experienced RC technicians: remove any existing intake components as needed, align the PUC cover with the intake opening, and secure it with the engine's original fasteners. Verify clearances around the carburettor and cooling head to prevent interference with throttle linkage or airflow.

For maintenance and tuning: the cover helps keep the intake path cleaner between runs, which preserves carburettor response and reduces the need for deep cleans. It is a protective maintenance accessory rather than a power upgrade, and it supports reliable engine behaviour during regular track use.