Mercury Quicksilver, Flush Kit, 22-861932A1. This Mercury flushing system fits MCM/MIE 4.3L, 5.0L, & 5.7L (Gen +) engines with drainable circulating pump hose.
This product is the only known 'non-engine running' method of flushing an engine while actually clearing out both sides of the thermostat: exhaust manifolds and engine block. Most 'non-running' engine flush setup will only flush out the manifolds due to the thermostat closing once cold water is introduced which prevents flushing of the block itself. If your engine does not have the 3 piece circulating pump hose including the 'blue' drain fitting, you will need to order a hose setup to allow use of this flush system.
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