Description
Sierra 18-9779 Universal Gear Lube Pump
The Sierra 18-9779 is a heavy-duty manual pump designed for the clean and efficient transfer of marine gear lubricant from standard quart bottles into your lower unit. Engineered for versatility, this pump features a universal threaded fitment that simplifies the maintenance process for a wide range of outboard and sterndrive models. The high-stroke volume allows for rapid filling, while the clear delivery tube lets you monitor the flow of lubricant to prevent air pockets.
Applications
- Universal Compatibility: Fits standard 32 fl. oz. (Quart) marine gear lube bottles.
- Engine Fitment: Includes adapters for use with most Mercury, Mariner, Johnson, Evinrude, Yamaha, Suzuki, and Honda outboards.
- Sterndrive Support: Compatible with MerCruiser, OMC Cobra, and Volvo Penta SX drives.
Shipping & Returns
In-stock maintenance tools ship quickly to help you complete your seasonal gear lube change. For our full return policy, please visit /policies/refund-policy.
Key Facts
Brand: Sierra Marine
Part ID: 18-9779
Bottle Size: Standard 1 Quart (32 oz)
Adapter Sizes: 3/8"-16 and M8 x 1.25 threads included
What’s Included
Pump: (1) Manual plunger-style quart bottle pump
Tubing: (1) Flexible transparent delivery hose
Adapters: (1) Metric adapter and (1) Standard threaded adapter
Service Notes
Always fill your gearcase from the bottom drain hole until lubricant appears at the top vent hole to ensure all air is purged from the system. After use, flush the pump with a small amount of clean lubricant or wipe the pickup tube to prevent cross-contamination with different gear lube weights in future services. Service Notes must be last.
Frequently Asked Questions
Will this fit the 5-gallon pails of gear lube?
No, this specific model (18-9779) is designed exclusively for 1-quart bottles. For 5-gallon pails, a larger diameter pump is required.
Does it include the metric adapter for Japanese outboards?
Yes, the kit includes the M8 metric adapter necessary for Suzuki, Yamaha, and Honda engines.
Is the hose long enough for high-mounted drain plugs?
The flexible tubing provides ample length to reach from a bottle on the ground to the drain plug on most standard mid-section outboards.