31511320 - Turning Point Propellers Turning Point Express® Mach3™ OS™ - Left Hand - Stainless Steel Propeller - OS-

Express® Mach3™ OS™ - Left Hand - Stainless Steel Propeller - OS-1613-L - 3-Blade - 15.625" x 13 Pitch

The Express Mach3 OS Series of Stainless Steel Propellers are the next step in the evolution of our very popular larger diameter VO series. Our Engineers and Propeller Experts made improvements to the cup, leading and trailing edges, and the aggressive progressive rake and blade geometry that are Turning Point hallmarks. These modifications have produced a propeller with excellent hole shot, impressive bow lift, and class leading cornering. 

The Express Mach3 OS is perfectly matched to large horsepower bay boats, offshore center consoles, and high horsepower pontoons/tri-toons. It will fit all 90hp and  larger 4.75" gearcase outboards from all engine manufacturers, and Mercury® Alpha One™ and Bravo One™, and Volvo® Penta® SX sterndrives. Large diameter three blade propellers offer great mid-range fuel economy in many applications. Whether you are looking to maximize your time on the water, extend your cruise range, or just stretch your fuel dollars, the Express Mach3 OS is a great choice to get the most out of your boat.

Proprietary Stainless Steel, TP17™

Formulated to meet the exacting requirements of the New Express Mach3 and Mach4 designs. 20% higher chromium content than the competition - more shine, better corrosion resistance. Almost 250% Stronger and 5X more durable than run-of-the-mill stainless steel. This new material allows Turning Point's Engineers and Designers the freedom to produce radical new designs that will help you wring the most performance out of your boat.

Large Free Flowing Exhaust Ports

Turning Point's Propeller Housings have massive Exhaust flow pathways. Their Propellers have 40% more exhaust flow Area versus competitive product. More exhaust flow and less backpressure can generate more horsepower. Like headers for your boat.

Turning Point manufactures Express propellers to fit 9.9(bigfoot)-300+hp Evinrude®, Force®, Honda®, Johnson®, Mariner®, Mercruiser®, Mercury®, Nissan®, OMC®, Parsun®, Suzuki®, Tohatsu®, Volvo® Penta®, and Yamaha® Outboards and Sterndrives. Choose one of our Lifetime Warranty MasterGuard Installation Kits to fit your engine, then choose the propeller that matches your boating requirements. There are 3 and 4 blade, left and right rotation prop models with a variety of diameter and pitch options available for almost all boat types. Turning Point's Props Run Faster, Pull Harder, and Handle Better.

Note: A Hub Kit is required for installation of this propeller. See the Turning Point Selection Chart or the Prop Wizard™ for hub kit selection.

WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

The Turning Point Express Mach3 OS-1613-L is a left-hand, 3-blade stainless steel propeller designed for marine applications. This propeller, identified by part number 31511320, features a 15.625-inch diameter and 13 pitch. It is engineered for large horsepower bay boats, offshore center consoles, and high horsepower pontoons/tri-toons. The design incorporates improvements to the cup, leading and trailing edges, and blade geometry, which contribute to enhanced hole shot, bow lift, and cornering capabilities. Constructed from TP17 proprietary stainless steel, it offers increased chromium content for improved corrosion resistance and durability compared to standard stainless steel. The propeller housing includes large free-flowing exhaust ports, designed to reduce backpressure and potentially improve horsepower output. It is compatible with all 90hp and larger 4.75" gearcase outboards from various manufacturers, as well as Mercury Alpha One and Bravo One, and Volvo Penta SX sterndrives. A hub kit is required for installation, which must be selected separately.