Set of 3 ‘O’ Rings to suit both NA & TT Intake Manifolds.
An easy way to ensure sufficient sealing when the Balance Tube is removed from intake manifold, for sparkplug replacement, intake manifold removal, motor teardown etc.
Often these ‘O’ Rings are either reused to failure or replaced with copious amounts of silicone, this is an easy way to prevent wayward engine idle & operations is to replace with new units