Gear Lube Monitor
Shipping information
Same-day shipping on orders placed before 11 AM Eastern Time.
Free shipping on orders of $150 and over.
Oils and fluids: an additional $10.99 shipping fee applies to each oil and fluid item.
30-day returns on eligible items
Unused, uninstalled items in original packaging. Special-order items: 20 days, 25% restocking fee.
Compatible Applications
| Brand | Drive | Application Notes |
|---|---|---|
| MerCruiser | Alpha One Gen II & Bravo | 1991–1998; confirm fitment with your serial number |
Product Details
| Specification | Value |
|---|---|
| Part Number | 86193 |
| Manufacturer | Mercury Marine |
| Part Type | Gear Lube Monitor |
What This Product is Used For
The gear lube monitor is a reservoir mounted in the engine compartment that keeps the sterndrive topped up and lets you check drive lubricant level at a glance. A dropping level or milky lubricant can be an early sign of a seal leak or water intrusion.
Key Features and Benefits
- Gear lube monitor for MerCruiser Alpha One Gen II and Bravo drives
- Lets you check drive lube level without pulling the drive plug
- Helps you spot leaks or water intrusion early
FAQ
Does this include gear lube?
No. Gear lube is sold separately.
Do you sell just the bottle?
Yes. The replacement reservoir bottle is available separately (Gear Lube Bottle, Square, 8M0075709).
Will this fit my drive?
It's listed for 1991–1998 Alpha One Gen II and Bravo drives. Confirm fitment with your serial number before ordering.
Returns & warranty
Most standard items may be returned within 30 days of purchase if unused, uninstalled, complete, and in original packaging. Request a Return Authorization (RMA) before sending anything back. Shipping costs are non-refundable.
Special-order items may be returned within 20 days, subject to a 25% restocking fee.
Warranty claims follow the manufacturer's warranty policy. Contact us and we'll help with the process.