The Turning Point Express Mach3 OS 31511720 is a premium stainless steel propeller engineered for large horsepower applications ranging from 150-300+ hp engines with 4.75" gearcases. This 15.6" diameter, 17-pitch, 3-blade left-hand rotation propeller represents the evolution of Turning Point's popular larger diameter design philosophy, delivering exceptional performance for bay boats, offshore center consoles, and high-performance pontoons and tri-toons.
Advanced Design Features:
- Optimized cup, leading and trailing edges with aggressive progressive rake and blade geometry for superior water flow
- Excellent hole shot acceleration gets you on plane quickly
- Impressive bow lift for improved ride quality and handling
- Class-leading cornering performance maintains speed and control through turns
- Large diameter 3-blade design delivers outstanding mid-range fuel economy
- Performance-tuned pitch, rake angles, and exhaust vents optimize all-around performance
TP17™ Proprietary Stainless Steel Construction:
- 20% higher chromium content than competitive propellers for superior shine and corrosion resistance
- Nearly 250% stronger than standard stainless steel alloys
- 5X more durable for extended service life
- Precision casting technology enables radical blade designs for maximum performance
Enhanced Exhaust Flow System:
Turning Point's propeller hub features massive exhaust pathways with 40% more flow area than competitive products. This increased exhaust flow reduces backpressure and helps generate more usable horsepower, functioning like performance headers for your marine engine.
Universal Compatibility:
Compatible with 90hp and larger outboards with 4.75" gearcases from all major manufacturers including COX, Evinrude, Honda, Johnson, Mariner, Mercury, MerCruiser, Nissan, OMC, OXE, Parsun, Suzuki, Tohatsu, Volvo Penta, and Yamaha. Also fits Mercury Alpha One and Bravo One, and Volvo Penta SX sterndrives. Requires 500-series installation/hub kit for applications under 200hp or 700-series kit for engines 200hp and above (sold separately).
