Sierra's™ full synthetic lower unit gear lube optimizes gear life by reducing friction while providing wear protection in severe operating conditions.
- Sierra™ full synthetic gear lube
 - Engineered to protect gears, bearings, and internal gearcase components of outboards and stern drives under high load operating conditions
 - Formulated for use in freshwater or saltwater marine applications
 - Unique lubricant is shear stable and resists oxidation to ensure high performance over a wide range of ambient operating temperatures
 - 1 quart bottle
 - 75W-90 weight
 - API GL-5 / MIL-L-210E
 - Gold color
 - Optional gear lube pump P/N 18-9781 – sold separately
 - Replaces Volvo Penta 1141679
 - Replaces Bel-Ray 99741-BT1
 
