Star Brite 28402 Lower Unit Gear Lube Adapter Fitting with Flexible Hose
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Star Brite 28402 Lower Unit Gear Lube Adapter Fitting
Make lower unit gear lube changes cleaner, faster, and less frustrating. The Star Brite 28402 adapter fitting attaches to standard 8 fl. oz. and 10 fl. oz. gear lube squeeze tubes, adding a flexible hose that reaches fill plugs in tight, hard-to-access locations — no more awkward angles or spilled lube.
What's Included
- Metal threaded adapter fitting
- Flexible extension hose for reaching recessed fill ports
Compatible Engines
The metal threaded fitting is designed to work with a wide range of outboard and sterndrive lower units, including:
- MerCruiser
- OMC, Evinrude & Johnson
- Honda (70 hp and up)
- Volvo Penta
- Force
- Mercury (US-origin models)
- Gamefisher
Always confirm the correct thread size in your engine's owner's manual before use. An additional adapter may be required for some engine models.
Best Use Case
This fitting is the right choice for boaters who perform their own lower unit maintenance using squeeze-tube gear lube. It's especially useful on engines where the fill plug is recessed or surrounded by tight bodywork, making a straight-tube application messy or impossible. Pair it with compatible gear lube squeeze tubes for a complete, no-mess service setup — see the Star Brite Lower Unit Quart Pump for higher-volume applications, or the Sea-Dog Lower Unit Adapter (8mm-1.25) and Sea-Dog Lower Unit Standard Pump for pump-style alternatives.
Parts Desk Insights
This is a high-attachment add-on for any customer buying gear lube in squeeze-tube format. Best use case is outboard owners doing seasonal lower unit service — particularly those with Honda, Evinrude, or OMC units where plug access is tight. Confirm thread compatibility before recommending; customers with Yamaha or metric-thread engines will need the metric adapter instead. Stock alongside gear lube tubes for easy bundling at point of sale.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.