Mercury Marine front crankshaft oil seal 26-888779 is a genuine OEM oil seal for the crankshaft opening in the engine's front/timing cover. The seal fits around the crankshaft and prevents engine oil from leaking from the front cover.
The oil seal is cataloged as part of the front cover and circulation pump assembly on selected MerCruiser 4.3L V6 engines with carburetor or MPI and Alpha or Bravo drives. Documented applications include specific serial number ranges from 0M300000 to 1A063239, depending on engine model and fuel system.
The OEM part number is 26-888779, and the Mercury Marine core part number is 888779. The seal is also identified as a component in engine overhaul gasket kit 27-807756A01 and longblock assembly 864256A2.
Compatibility depends on the exact engine model and engine serial number. Therefore, always check the existing part number and serial number range before ordering.
Key featuresGenuine Mercury Marine OEM part
Part number: 26-888779
Type: Front crankshaft oil seal
Location: Front/timing cover
For selected MerCruiser 4.3L V6 Carb and MPI engines
Documented for Alpha and Bravo configurations
Check engine model and serial number before purchase
