Turning Point Propellers 31512510 Express Mach3 OS 15.6x25 3-Blade Stainless Steel Propeller

The Turning Point Express Mach3 OS 31512510 is a high-performance 3-blade stainless steel propeller designed for large horsepower marine applications. This 15.6-inch diameter, 25-pitch right-hand rotation propeller represents the evolution of Turning Point's popular larger diameter VO series, featuring advanced engineering refinements that deliver superior on-water performance.

Advanced Design Features:

• Proprietary TP17™ stainless steel construction with 20% higher chromium content for enhanced corrosion resistance and superior durability
• Refined cup design with optimized leading and trailing edges for improved water flow
• Aggressive progressive rake and blade geometry for exceptional handling characteristics
• Large free-flowing exhaust ports with 40% more exhaust flow area than competitive propellers
• Performance-tuned pitch and rake angles for optimized all-around performance

Performance Benefits:

• Excellent hole shot acceleration gets you on plane quickly
• Impressive bow lift improves boat attitude and visibility
• Class-leading cornering ability for confident maneuvering
• Outstanding mid-range fuel economy extends your cruise range
• Superior durability compared to aluminum propellers

Application:

• Designed for 150-300+hp engines with 4.75-inch gearcases
• Ideal for large horsepower bay boats, offshore center consoles, and high-performance pontoons/tri-toons
• Compatible with outboards from COX, Evinrude, Honda, Johnson, Mariner, Mercury, Nissan, OMC, OXE, Parsun, Suzuki, Tohatsu, Volvo Penta, and Yamaha
• Fits Mercury Alpha One and Bravo One, and Volvo Penta SX sterndrives
• Requires 500-series installation/hub kit (under 200hp) or 700-series kit (200+hp) - sold separately

The TP17 stainless steel alloy is nearly 250% stronger than standard stainless steel, allowing for aggressive blade designs that maximize performance while maintaining exceptional durability. The increased exhaust flow reduces backpressure and helps generate more usable horsepower, similar to performance headers for your marine engine.