Replacement vaccum tube for the UMS 7-360cc, the seven-cylinder 360cc four-stroke radial from UMS.
Function: it is the vacuum tubing for the induction and crankcase pressure system.
The reason this ends up on an order: tubing hardens and cracks with heat and age, and a split vacuum tube makes the engine run inconsistently. Supplied as a pack of 5, which is how these small parts are normally bought — you rarely need just one.
Fitting note: Route the tube away from hot surfaces and check it reaches the nipple fully.
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