Upgrade to Extreme Thrust: 4-Blade High-Performance Aluminum Propeller

When a standard 3-blade prop just isn't enough to move your heavy load, it is time to upgrade to our High-Thrust 4-Blade series. Specifically engineered for small outboards (6-9.9 HP) that need extra "bite" in the water, this propeller provides significantly more low-end torque, better reverse handling, and improved control for heavy vessels, sailboats, and fully loaded inflatables.

[ TARGETED ENGINE COMPATIBILITY ]
Designed for outboards with a 2.5" Gearcase and a 12 Spline Tooth prop shaft.
Perfectly fits the following models:

TOHATSU / NISSAN MODELS:
MFS6B (4-Stroke) & M6B (2-Stroke)
8 HP (2-Stroke) - All Years
8 HP MFS8 / NSF8 (4-Stroke) - All Years
9.8 HP (2-Stroke) - All Years
9.8 HP MFS9.8 / NSF9.8 (4-Stroke) - All Years
9.9 HP (4-Stroke) - All Years

[ WHY CHOOSE A 4-BLADE HIGH THRUST PROP? ]
Standard propellers are built for speed; our 4-blade props are built for POWER. By adding a fourth blade, we increase the blade surface area, which results in:

MAXIMUM TORQUE: Faster "hole shot" to get heavy boats on plane more quickly.
KICKER MOTOR EXCELLENCE: The ideal choice for sailboat owners using their outboard as a kicker or auxiliary motor. Provides the steady, strong push needed against wind and currents.
SUPERIOR MANEUVERABILITY: Experience better control when docking and significantly improved stopping power when in reverse.
REDUCED VIBRATION: The 4-blade design offers a more balanced, smoother rotation compared to traditional 3-blade models.

[ CORE TECHNICAL SPECIFICATIONS ]
Material: Heavy-Duty Marine-Grade Aluminum Alloy
Diameter: 8.7 Inches
Spline Tooth: 12
Gearcase: 2.5 Inches
Rotation: Right Hand (RH)
Hub System: Factory-installed shock-absorbing rubber hub (Protects your lower unit drivetrain from impacts)

[ FIND YOUR PERFECT PITCH ]
5" Pitch (3B2B645110): Maximum Thrust. Best for very heavy displacements, sailboats, or pushing heavy work barges at low speeds.
7" Pitch (3B2B645120): The Balanced Heavy-Lifter. Ideal for pontoon boats and heavily loaded 4-person inflatables.
9" Pitch (3B2B645130): Performance Thrust. For users who want the handling of a 4-blade prop without sacrificing too much top-end cruising speed.

[ INSTALLATION NOTE ]
Direct drop-in replacement. Use your existing thrust washer, nut, and cotter pin. We strongly recommend applying marine grease to the prop shaft during installation to prevent seizing in saltwater environments. Please verify your OEM part number and spline count before purchase.