Stainless Steel Propellers for 60–140 HP Tohatsu Outboard Boat Motor
Whether you’re carving wakes behind a towed skiff or cruising a glassy inland lake, the right propeller can redefine your on-water experience. Our stainless steel propellers, engineered for 60–140 HP Tohatsu outboards with a 4-1/4″ gearcase and 15-spline shaft, deliver instantaneous throttle response, long-lasting durability, and measurable fuel savings. Although these props fit many Yamaha and Mercury engines, we’re not affiliated with those brands—we simply craft high-strength alternatives that meet or exceed factory specifications.
Why Stainless Steel Matters
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Sharper Thrust
Stainless steel keeps its edge much longer than aluminum, so you enjoy crisp acceleration every time you hit the throttle. -
Corrosion Combatant
Marine-grade alloy battles salt spray, gravel, and general wear, reducing the need for frequent replacements. -
Efficiency Gains
By fine-tuning diameter and pitch combinations, you’ll often see improved miles-per-gallon on extended runs.
Decoding Key Dimensions
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Blade Count (B)
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3-Blade: A classic design balancing speed and handling.
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4-Blade: Extra bite for heavy loads, sharp turns, or water-sport towing.
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Diameter (D)
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The circle swept by the blades, measured in inches.
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Smaller diameters spin faster; larger diameters push more water per rotation.
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Pitch (P)
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The theoretical distance a prop moves forward in one full revolution.
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Lower pitches (13″–17″) help boats plane quickly; higher pitches (19″–23″) enhance top-end speed.
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Rotation (R)
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Right-Hand (R) or Left-Hand (L): Match your engine’s rotation for balanced steering.
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OEM Number
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A dash (–) indicates a universal fit.
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Specific codes (e.g., 3431-130-21) denote direct Tohatsu replacements.
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Complete Propeller Lineup
| OEM Number | Blades | Diameter (D) | Pitch (P) | Rotation |
|---|---|---|---|---|
| – | 3 | 13″ | 17″ | R |
| – | 3 | 13″ | 19″ | R |
| – | 3 | 13″ | 19″ | L |
| 3431-130-21 | 3 | 13″ | 21″ | R |
| 3441-133-17 | 3 | 13¼″ | 17″ | R |
| – | 3 | 13¼″ | 17″ | L |
| – | 3 | 13½″ | 14″ | R |
| – | 3 | 13½″ | 15″ | R |
| – | 3 | 13½″ | 15″ | L |
| – | 3 | 13½″ | 16″ | R |
| – | 3 | 13½″ | 17″ | R |
| – | 3 | 13½″ | 18″ | R |
| – | 3 | 13½″ | 19″ | R |
| – | 3 | 13½″ | 20″ | R |
| – | 3 | 13½″ | 21″ | R |
| – | 3 | 13½″ | 22″ | R |
| 3431-138-13 | 3 | 13¾″ | 13″ | R |
| 3441-138-15 | 3 | 13⅞″ | 15″ | R |
| – | 3 | 13⅞″ | 17″ | R |
| – | 3 | 13⅞″ | 19″ | R |
| – | 3 | 13⅞″ | 21″ | R |
| – | 3 | 14″ | 15″ | R |
| – | 3 | 14″ | 17″ | R |
| – | 3 | 14″ | 17″ | L |
| – | 3 | 14″ | 19″ | R |
| – | 3 | 14″ | 19″ | L |
| – | 3 | 14″ | 21″ | R |
| – | 3 | 14″ | 21″ | L |
| – | 3 | 14″ | 23″ | R |
| – | 3 | 14″ | 23″ | L |
| – | 4 | 13″ | 17″ | R |
| – | 4 | 13″ | 17″ | L |
| – | 4 | 13″ | 19″ | R |
| – | 4 | 13″ | 19″ | L |
| 3453-130-21 | 4 | 13″ | 21″ | R |
| – | 4 | 13″ | 21″ | L |
| 3453-133-15 | 4 | 13¼″ | 15″ | R |
| – | 4 | 13¼″ | 15″ | L |
| 3453-135-13 | 4 | 13½″ | 13″ | R |
| – | 4 | 13½″ | 13″ | L |
| – | 4 | 13½″ | 14″ | R |
| – | 4 | 13½″ | 14″ | L |
Expert Tips for Selection
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Quick Plane
If your boat struggles to get on plane, start with a 3-blade, 13″/17″ setup. It offers dependable lift at lower speeds. -
Heavy Loads & Tows
A 4-blade, 13″/19″ prop affixes extra grip under load, delivering tighter handling when towing or carrying full gear. -
Fine-Tuning
Swapping pitch by just one inch can make a surprising difference. Don’t hesitate to experiment, and always monitor your tachometer to stay in the optimal RPM range.
Real-World Insights
An offshore charter captain once told me his crew shaved three seconds off their plane-time with a 13½″/19″ three-blade prop, critical when chasing billfish at first light. On a long fuel-economy run, one owner logged an extra mile per gallon simply by switching to a 14″/21″ configuration. These aren’t hypothetical gains; they translate into earlier starts, longer days, and more peace of mind.
Choosing the perfect stainless steel propeller means understanding blade count, diameter, pitch, and rotation in relation to your boat’s weight and mission profile. With this comprehensive lineup and our expert guidance, you’re ready to make an informed decision that will keep you smiling with every knot you cover.