Stainless Steel Propellers for 25–30 HP Tohatsu Outboard Boat Motor
Selecting the perfect propeller for your 25–30 HP Tohatsu outboard means balancing acceleration, top‐end speed, and load capacity. Our marine-grade stainless steel options are precision-engineered for 3″, 10-spline gearcases on both two-stroke (1985–2001) and four-stroke (2002 & newer) models. No branding pretensions here—we simply design props that fit Tohatsu, Yamaha, Mercury and similar engines flawlessly.
Engine & Gearcase Compatibility
-
Horsepower Range:
-
25 HP (1986–2001)
-
30 HP (1985–2001)
-
25 HP & 30 HP four-stroke (2002 & newer)
-
MFS 25/30, NSF 25/30
-
-
Gearcase Specs:
-
Diameter: 3″
-
Splines: 10-tooth
-
Rotation: Right-hand only
-
Propeller Specifications
Below is the complete lineup of blade counts, diameters, pitches, and OEM cross-references where available. Blank OEM entries indicate universal aftermarket fitments.
| OEM # | Blades | Diameter | Pitch | Rotation |
|---|---|---|---|---|
| — | 3 | 9.9″ | 9″ | R |
| — | 3 | 9.9″ | 10″ | R |
| — | 3 | 9.9″ | 11″ | R |
| 3R0B64525-1 | 3 | 9.9″ | 12″ | R |
| 3R0B64527-1 | 3 | 9.9″ | 13″ | R |
| — | 3 | 9.9″ | 14″ | R |
| — | 3 | 10″ | 15″ | R |
| — | 3 | 10″ | 11″ | R |
| — | 3 | 10″ | 12″ | R |
| — | 3 | 10″ | 13″ | R |
| — | 3 | 10″ | 14″ | R |
| — | 3 | 10.25″ | 9″ | R |
| — | 3 | 10.25″ | 10″ | R |
| — | 3 | 10.25″ | 11″ | R |
| — | 3 | 10.25″ | 12″ | R |
| — | 3 | 10.25″ | 13″ | R |
| — | 3 | 10.25″ | 14″ | R |
| — | 3 | 10.25″ | 15″ | R |
| — | 4 | 9.9″ | 9″ | R |
| — | 4 | 9.9″ | 10″ | R |
Understanding Blade Count
-
Three-Blade Designs
Offer quick planing and lighter steering feel—ideal for solo runs, day cruising, or light-load fishing outings. -
Four-Blade Options
Deliver extra bite in the water, enhancing low-speed thrust. Perfect if you tow skiers, carry heavy gear, or fish in choppy conditions.
Choosing the Right Pitch
Pitch determines how far the propeller “bites” on each revolution:
-
9″–11″ Pitch
– Best for heavy loads or precise trolling speeds.
– Keeps prop torque high for dragging downriggers or pulling tubes. -
12″–14″ Pitch
– Strikes a balance between hole-shot and top speed.
– Favored by anglers who need quick plane-up plus a respectable cruise. -
15″ Pitch
– Suited to solo or light-load runs when maximum speed is the goal.
– May sacrifice low-end grunt under heavy load.
Real-World Insights
“On my 25 HP four-stroke, switching from a 9.9″×10″ three-blade to a 10.25″×12″ model shaved half a second off planing time with two anglers onboard—and still reached 24 MPH.”
—Seasoned inshore guide
-
Sea-Trial Multiple Options. Never rely on specs alone; test two or three pitches to find that sweet spot.
-
Inspect Spline Engagement. A snug fit prevents vibration and uneven blade wear.
-
Match Prop to Mission. If you tow or carry heavy gear regularly, err toward a lower pitch and/or four-blade variant.
Installation & Maintenance Tips
-
Torque to Spec. Always tighten the prop nut to manufacturer recommendations—too loose invites wobble, too tight stresses the hub.
-
Flush After Use. Rinse with fresh water to remove salt and sand.
-
Visual Checks. Inspect blades for nicks; minor damage can cause cavitation and wear.
By tailoring blade count, diameter, and pitch to your boat’s weight and intended use, a stainless steel propeller transforms your 25–30 HP Tohatsu into an agile, responsive powerhouse—every outing, no compromise. Explore our complete lineup and experience smoother acceleration, tighter turns, and efficient cruising today.