Mercury Water Pump Impeller Housing Kit 8M0139981

Mercury Water Pump Impeller Housing Kit 8M0139981 is an OEM replacement kit for select MerCruiser engine cooling system applications. The kit is used as part of the engine-driven seawater pump system, which supplies cooling water to help maintain proper engine operating temperature.

Compatible with select MerCruiser applications including:

• MerCruiser 4.3L MPI Alpha EC engines
• Select MCM 4.3L applications using this seawater pump configuration
• Applications using Mercury closed cooling systems where this pump kit is specified

Mercury's current accessory guide specifically identifies 8M0139981 for MCM 4.3L EC Alpha engines and notes that it is used in conjunction with the applicable closed cooling kit.

Because MerCruiser cooling system configurations vary by engine model and production range, compatibility should be confirmed before ordering.

Supersedes/Replaces: 8M0063542, 8M0122653, 8M0137212.

To Confirm Compatibility: Contact our team with your engine serial number at (727) 596-5929 before ordering.

Replaces / supersedes Mercury part numbers: 8M0118063.