Drain Plug - Valve - QuickSilver Brand 22-16951Q-1

Fits MerCruiser engines with metal cylinder block drain fittings, engine blocks and exhaust manifolds.

Includes one brass plug and petcock assembly. Used to drain your engine block and manifold on all of the older MerCruiser engine manifolds and blocks from the 70's, 80's and early 90's.

The threads are 1/4"

Quicksilver Drain Plug Fits MerCruiser, OMC and Volvo Cylinder Blocks and Exhaust Manifolds