My Account
Shopping Cart

Turning Point Propellers 3150 1731 Express Mach4 14.5x17 4-Blade Stainless Steel Propeller

Manufacturer

Turning Point Propellers

<h3>About Turning Point Propellers</h3><p>Founded in 1997 and headquartered in Jacksonville, Florida, <strong>Turning Point Propellers</strong> has spent more than 26 years earning a reputation as one of the marine industry&apos;s most innovative propeller manufacturers. What started as a drive to engineer better-performing boat props has grown into a globally distributed brand trusted by recreational boaters, dealers, and OEM partners alike. The company&apos;s core philosophy is straightforward: <em>Run Faster. Pull Harder. Handle Better.</em></p><h3>A Legacy Built on Industry Firsts</h3><p>Turning Point&apos;s history reads like a timeline of marine propulsion innovation. The brand introduced the industry&apos;s first multi-manufacturer interchangeable hub propeller, the first full-color prop selection charts, and the first online Prop Wizard calculator to help boaters match the right prop to their engine. Later milestones include the first high-performance four-blade aluminum propeller and the first &ldquo;safer&rdquo; propeller design — the Aegis series — engineered to minimize harm to marine life at low boat speeds.</p><p>Today, Turning Point&apos;s lineup is organized around three flagship series: the <strong>Hustler</strong> aluminum propellers, the <strong>Express</strong> stainless steel propellers, and the <strong>Aegis</strong> safer-design series. Each is built to cover a wide spectrum of engine outputs, from small outboards in the 6 HP range up to powerplants exceeding 300 HP, and fits vessels ranging from bay boats and pontoons to tritoons and sterndrive applications.</p><h3>Engineering That Sets Turning Point Apart</h3><p>A key differentiator in Turning Point&apos;s manufacturing process is its exclusive squeeze-cast method for aluminum propellers. This technique virtually eliminates the voids and air pockets that weaken conventionally cast props, producing a tighter grain structure and stiffer blades that resist flex — translating directly into more efficient power transfer. Stainless steel Express props feature advanced pitch-line and rake-line cupping along with vented barrels that allow exhaust gases to escape during acceleration, improving hole-shot performance. Turning Point also applies a proprietary Ultracoat powder-coat finish to all aluminum propellers for a corrosion-resistant, high-gloss appearance that holds up in harsh saltwater and freshwater environments alike.</p><h3>Propellers for Every Boater</h3><p>The heart of the Turning Point catalog is its broad selection of <a href="/200673-propellers-turning-point-propellers-7621">Turning Point Propellers</a> — three- and four-blade designs in both aluminum and stainless steel, available in right- and left-hand rotation to suit virtually any outboard or sterndrive configuration. Whether you&apos;re looking to maximize top speed, improve fuel economy on long cruises, or gain better low-end pulling power for watersports, there is a Turning Point prop engineered for that purpose.</p><p>Equally important to a proper propeller installation is the hardware that supports it. Turning Point&apos;s line of <a href="/7621-turning-point-propellers-propeller-parts-accessories-200817">Propeller Parts &amp; Accessories</a> — including their patented MasterGuard hub kits — rounds out the system. The MasterGuard hub features a one-piece glass-filled nylon over brass spline design that eliminates the failures common in older multi-part sleeve-and-spline systems, while protecting engines and drives from shift shock and impact loads. Crucially, these hub kits are covered by the industry&apos;s only lifetime warranty and are compatible with Mercury Flo-Torq II, Michigan Wheel XHS, and Solas Rubex hub kit systems.</p><h3>Why Boaters Choose Turning Point</h3><ul style="list-style:disc"><li>Over 26 years of dedicated marine propeller engineering and manufacturing</li><li>Exclusive squeeze-cast aluminum process for stronger, flex-resistant blades</li><li>Industry-first interchangeable MasterGuard hub system with a lifetime warranty</li><li>Wide compatibility across major outboard and sterndrive engine brands</li><li>Prop Wizard tool to help boaters select the optimal pitch and diameter</li><li>Vertically integrated manufacturing from raw ingot to finished product</li></ul>

Part Number

3150 1731
09/12/2036 8:00 AM
Sale Price

$558.16

In Stock (10)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Turning Point Express Mach4 is a revolutionary 4-blade stainless steel propeller designed for high-performance outboard engines ranging from 90-300+ horsepower with 4.75-inch gearcases. This propeller features innovative Dual Geometry technology that delivers the best of both worlds: the aggressive hole shot and superior handling of a 4-blade design combined with the top-end speed traditionally associated with 3-blade propellers.

Key Features:

  • 14.5-inch diameter with 17-inch pitch, right-hand rotation (standard)
  • Dual Geometry blade design for exceptional performance across all speed ranges
  • Unprecedented hole shot acceleration and lift characteristics
  • Superior rough water stability and precise steering control
  • Lifts the entire boat higher out of the water for improved efficiency
  • Premium stainless steel construction with enhanced corrosion resistance
  • Advanced casting technology for improved strength and durability
  • High-gloss finish for long-lasting appearance

This propeller is ideal for boaters who demand maximum performance without compromise. Whether you're getting on plane quickly with a heavy load, navigating choppy water conditions, or running at wide-open throttle, the Express Mach4 delivers consistent, predictable performance. Compatible with most outboard engines in the 90-300+ horsepower range equipped with 4.75-inch gearcases.

Products specifications

Diameter

14.5"

Pitch

17

Rotation

RH

just what I need at a good price, and quick easy ordering

Quick shipping. Competitive prices.

I've been looking for the rear hatchback lock for a 94 Lumina APV for a long time. I told them what I wanted in this website found it immediately. I really appreciate how easy it is to use this service.

Fast shipping and the product met all of my expectations.

Nice straight forward process

.

check out was fast and easy

Called for help getting the right one and customer service was very friendly

great service and fast shipping. Low pricing too.

Autoplicity had an item my vendor had on backorder for weeks in stock and shipped it very quickly. I'm glad i found this place on the web, and will be looking forward to doing business with them in the future!

Quick and easy now just to see how long shipping is.

Best price

Very fast checkout.

Item as described and shipping was lightning fast, overall great experience.

Thanks

Reasonable prices, item shipped quickly, easy to navigate site. Shipping prices were a bit high for my liking though.

so far so good! best price I could find

best price. hopefully fast shipping

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy