{"product_id":"turning-point-propellers-31431512-express-mach3-propeller-13-75x15-3-blade-stainless-steel-rh-rotation-standard-708-31431512","title":"Express Mach3 Propeller 13.75x15 – 3-Blade Stainless Steel, RH Rotation | 40–150hp (4.25\" Gearcase)","description":"\u003ch2\u003eExpress Mach3 Propeller — 13.75 x 15, 3-Blade Stainless Steel, Right-Hand Rotation\u003c\/h2\u003e\n\u003cp\u003eThe Express Mach3 is a premium 3-blade stainless steel propeller built on nearly 40 years of race boat and high-performance prop design expertise. Machined from proprietary TP17™ stainless steel and engineered with aggressive pitch angles, radical blade geometry, and sharp cup profiles, it delivers best-in-class speed, handling, and acceleration for mid-range outboards and sterndrives from 40 to 150hp with 4.25-inch gearcases.\u003c\/p\u003e\n\n\u003ch3\u003eBest Use Case\u003c\/h3\u003e\n\u003cp\u003eThe Mach3 in 13.75 x 15 pitch is an excellent all-around stainless upgrade for mid-horsepower outboards and sterndrives running 40–150hp engines with 4.25\" gearcases. The 15-pitch delivers a strong balance of hole shot and top-end speed, making it well-suited to mid-weight fishing boats, bay boats, and runabouts where you want noticeably better performance than a stock aluminum prop — sharper acceleration, better fuel economy at cruise, and more confident handling. It’s also an ideal upgrade over older OEM stainless designs.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Upgrade to Stainless Steel?\u003c\/h3\u003e\n\u003cp\u003eStainless steel propellers are significantly more durable than aluminum and deliver better all-around performance. The Mach3 runs within 0.5–1 mph of the equivalent Hustler aluminum design under most conditions, but holds that performance more consistently over time, resists flex under load, and outperforms competitive OEM and aftermarket stainless designs. In many cases, the fuel economy gains alone can offset the cost of the upgrade within a season or two.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTP17™ Proprietary Stainless Steel\u003c\/strong\u003e — Formulated specifically for the Mach3 and Mach4 series. 20% higher chromium content than standard stainless for better corrosion resistance and a higher-gloss finish. Nearly 250% stronger and 5x more durable than conventional stainless steel alloys.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance-Tuned Geometry\u003c\/strong\u003e — Aggressive pitch angles, optimized rake, and sharp cup profiles engineered for maximum speed, acceleration, and handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTuned Exhaust Vents\u003c\/strong\u003e — Performance-optimized exhaust flow pathways reduce back-pressure and improve hole shot and top-end output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace-Proven Finish\u003c\/strong\u003e — State-of-the-art casting and finishing processes drawn from race boat prop development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Engine Compatibility\u003c\/strong\u003e — Fits Evinrude, Honda, Johnson, Mariner, Mercury, MerCruiser, Nissan, OMC, Parsun, Suzuki, Tohatsu, and Yamaha outboards and sterndrives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 31431512\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter x Pitch:\u003c\/strong\u003e 13.75\" x 15\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlades:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e TP17™ Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Right-Hand (Standard)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGearcase:\u003c\/strong\u003e 4.25\" (mid-large)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine Range:\u003c\/strong\u003e 40–150hp outboards \u0026amp; sterndrives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHub System:\u003c\/strong\u003e 500-Series hub kit required (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHub kit required — not included.\u003c\/strong\u003e This propeller uses the 500-Series interchangeable hub system. Confirm your engine make, model, and year against the application chart to select the correct kit before ordering.\u003c\/p\u003e\n\u003cp\u003eThe 15-pitch is a mid-range choice for this gearcase family — a strong all-around starting point. If your engine is over-revving at wide-open throttle, step up to a higher pitch. If you’re struggling to reach your engine’s recommended RPM range, drop down to a lower pitch for more bite. Browse the Mach3 lineup for this gearcase:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/turning-point-propellers-31431712-express-mach3-propeller-13-25x17-3-blade-stainless-steel-rh-rotation-standard-708-31431712\"\u003eExpress Mach3 13.25 x 17 — 3-Blade SS, RH\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/turning-point-propellers-31431912-express-mach3-propeller-13-25x19-3-blade-stainless-steel-rh-rotation-standard-708-31431912\"\u003eExpress Mach3 13.25 x 19 — 3-Blade SS, RH\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/turning-point-propellers-31431530-express-mach4-propeller-13-5x15-4-blade-stainless-steel-rh-rotation-standard-708-31431530\"\u003eExpress Mach4 13.5 x 15 — 4-Blade SS, RH\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/turning-point-propellers-31431730-express-mach4-propeller-13-25x17-4-blade-stainless-steel-rh-rotation-standard-708-31431730\"\u003eExpress Mach4 13.25 x 17 — 4-Blade SS, RH\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/turning-point-propellers-masterguard-installation-kit-500-11500000-708-11500000\"\u003eMasterGuard Kit 500 — 500 Series Hub Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/turning-point-propellers-masterguard-installation-kit-501-11500100-708-11500100\"\u003eMasterGuard Kit 501 — 500 Series Hub Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51215113256996,"sku":"708-31431512","price":704.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/708-31431512.jpg?v=1786150345","url":"https:\/\/marisolmarine.com\/products\/turning-point-propellers-31431512-express-mach3-propeller-13-75x15-3-blade-stainless-steel-rh-rotation-standard-708-31431512","provider":"Marisol Marine Company","version":"1.0","type":"link"}