Description
Mercury 8M0142979 Gearcase Seal Kit
Genuine Mercury gearcase seal kit for select 3.4L V6 and 4.6L V8 outboards. Use this kit when servicing compatible lower units to replace the specified gearcase seals with factory parts.
Verified applications
- Select Mercury 200 and 225 HP 3.4L V6 outboards
- Select Mercury 225, 250 and 300 HP 4.6L V8 outboards, including Pro XS, SeaPro and Verado applications
- Select Mercury Racing 300R applications
- Used on specified 4.80- and 5.44-inch torpedo gearcases and select Torque Master or Sport Master configurations
Package information
- Mercury part number: 8M0142979
- UPC: 745061236417
- Package weight: 0.57 lb
- Package dimensions: 7.63 x 5.63 x 1.50 in
Fitment note: Gearcase configuration and rotation vary. Confirm the engine serial number and the applicable Mercury parts diagram before ordering.

