







⚓ Keep your MerCruiser running smooth — don’t let gear oil leaks slow your adventure!
The 18920A1 Dribble Gear Oil Reservoir Valve by NorthBoat is a precision-engineered replacement part designed for MerCruiser Alpha 1 Gen 2 and Bravo series stern drives. Featuring OEM-quality construction, it includes two durable O-rings for a secure seal, ensuring reliable gear oil circulation and leak prevention. Compact and easy to install with NPT connections, this valve guarantees optimal performance and peace of mind on every marine journey.



| Material | Plastic, Rubber |
| Brand | NorthBoat |
| Item dimensions L x W x H | 2.36 x 0.51 x 0.51 inches |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Outlet Connection Type | NPT |
| Number of Ports | 2 |
| Outlet Connection Size | 0.13 Inches |
| Specification Met | Alpha out drive oil vale, MerCruiser alpha one gen 2 gear oil drippler, MerCruiser dribble gear oil reservoir valve, MerCruiser outdrive rebuild kit, northboat 18920a1 valve assembly mercruiser # 18920a1 |
| Manufacturer | North Boat Marine |
| UPC | 788934534661 |
| Part Number | 18920A1 |
| Item Weight | 0.317 ounces |
| Product Dimensions | 2.36 x 0.51 x 0.51 inches |
| Item model number | MerCruiser Alpha 1 Gen 2 Dribble Valves |
| Size | 2.36 inches |
| Color | Black |
| Included Components | 1 X MerCruiser Dribble Gear Oil Reservoir Valve, 2 X O-Rings |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 90 days |
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