Description
Mercury Black Max Aluminum Propeller 10.375" x 12" RH, Rubber Hub (19639A40)
Deliver confident acceleration and smooth cruising with the Mercury Black Max aluminum propeller. Built from Mercalloy for strength with ductility and finished in corrosion-resistant Phantom Black enamel, this 10.375" × 12" right-hand propeller features a rubber-bushed hub to help absorb vibration and protect the drivetrain from minor impact loads.
Applications
- For Mercury & Mariner 9.9 hp and 15 hp FourStroke BigFoot (1999–2004)
- For 20–25 hp TwoStroke Classic (1980–2006)
- For 25 hp SeaPro/Marathon outboards
- Confirm diameter/pitch, rotation, gearcase, and hub style in your owner’s/service manual
Shipping & Returns
Fast shipping from Wisconsin with reliable carriers. Need help confirming fit by engine model/serial and gearcase? We’re happy to assist. Returns are easy—see our Return Policy.
Key Facts
- Brand: Mercury Propeller
- Series: Black Max
- Part #: 19639A40
- Material: Mercalloy aluminum (engineered strength with ductility for minor impacts)
- Finish: Phantom Black glossy enamel (corrosion-resistant)
- Blades: 3
- Diameter × Pitch: 10.375" × 12"
- Rotation: Right-Hand
- Hub System: Rubber-bushed hub (vibration & impact damping)
- Fits: 9.9–15 hp FourStroke BigFoot (1999–2004); 20–25 hp TwoStroke Classic (1980–2006); 25 hp SeaPro/Marathon
- UPC: 745061020245
- Country of Origin: US
- Category: Propellers > Black Max
- Prop 65: Cancer
What’s Included
- 1 × Mercury Black Max 3-Blade Aluminum Propeller, 10.375" × 12" RH (19639A40) with rubber-bushed hub
Service Notes
- Verify hub style and hardware for your model; use the correct thrust washer, nut, and cotter per the service manual
- Hand-align on the shaft, torque to spec, and confirm smooth rotation and blade clearance before launch
- Inspect blades and hub periodically; repair nicks promptly to reduce vibration
- Rinse after salt/brackish use; include propeller checks in routine maintenance