Sierra 96507 Hi-Performance Lower Unit Gear Lube, 55-Gallon Drum
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Sierra 96507 Hi-Performance Lower Unit Gear Lube – 55-Gallon Drum
Engineered to exceed the performance of OEM hi-performance gear lubricants, Sierra 96507 is a premium conventional gear lube formulated specifically for the high-load, high-RPM demands of outboard and sterndrive (I/O) lower units. It delivers superior friction reduction, wear protection, and gear case component longevity — in the highest-volume format available for commercial and fleet operations.
The 55-gallon drum is the right choice for marina service departments, commercial marine operators, and high-volume shops that perform regular lower unit services across a large fleet and need a reliable, cost-effective bulk supply.
Key Features
- Hi-performance formulation — engineered to meet or exceed OEM hi-performance gear lube specifications for outboard and I/O lower units
- Friction reduction — reduces operating friction for improved gear efficiency and lower operating temperatures
- Superior wear protection — protects gears, bearings, and gear case components under high-load and high-RPM conditions
- Broad compatibility — suitable for both outboard and sterndrive (I/O) lower units in high-performance and heavy-load applications
- API GL-5 rated — meets the demanding gear lube service classification for hypoid and spiral bevel gears
Specifications
- Base stock: Conventional (mineral)
- API service: GL-5
- Application: Outboard and sterndrive (I/O) lower units
- Volume: 55 US gallons (208 L)
- Part number: 96507 | SKU: 47-96507
Best Use Case
The 96507 drum is the highest-volume option in the Sierra hi-performance gear lube range — ideal for marinas, commercial fleets, and service shops doing 50+ lower unit services per season. Buying in drum quantity delivers the strongest cost-per-service value and eliminates the logistics of frequent reordering during peak season.
For smaller-volume needs, this same hi-performance formulation is available in a 5-Gallon Pail (96505), a 1-Quart with Pump Kit (96502QP), and a 1-Quart (96502). For operations requiring full synthetic protection, see the Sierra 96805 Full Synthetic Gear Lube, 5-Gallon Pail or the Sierra 96802 Full Synthetic Gear Lube, 1 Quart.
To dispense cleanly from this drum, pair with the Gear Lube Pump or the Sierra 9788 Lube Pump.
Parts Desk Insights
Best use case is high-volume marina shops and commercial operators running regular lower unit service programs on outboard and I/O fleets. The 96507 drum offers the best cost-per-litre value in the Sierra gear lube lineup and is the practical choice for any operation doing 50 or more lower unit services per season. Lead with the OEM-surpassing performance claim and the cost-per-service advantage when positioning against smaller packaging. For customers who want full synthetic protection — particularly for high-HP performance outboards or extended drain intervals — redirect to the 96805 full synthetic pail. Always recommend a dedicated drum pump for clean dispensing. Confirm lower unit capacity and OEM gear lube specification with the customer before recommending — some manufacturers specify proprietary formulations.
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.