O.S. Engine Carburetor Dust Cap Set OS22884250 for 21RG,21RZ-V99,21VZB Intake Seal  [OS22884250]

Protective carburetor caps for 21-series engines

This dust cap set is an accessory for O.S. glow engines that shields the carburetor intake from dust and foreign particles. Its purpose is straightforward protection during storage or moving the model, prioritising secure fit and robustness over performance changes.

Compatibility only covers the model codes noted in the product name, so confirm your engine code before attempting to fit. To install, hand-locate the cap over the carburetor intake until it seats; do not force it onto a mismatched opening to avoid damaging either part.

The caps are intended purely as maintenance and storage aids and will not modify engine tuning. Keep them clean and inspect for signs of wear before reuse to ensure a consistent seal.