VEVOR Outboard Propeller, Upgrade OEM 15 Spline Tooth Aluminum Outboard Boat Propeller Fit Mercury Engines 40-140 HP, 4-1/4″ Gearcase, 3-Blade, RH (Right Hand Rotation), OEM Parts No. 48-77346A45

3-Blade Outboard Propeller Design for Balanced Speed and Stability

With its precisely designed three-blade layout, the VEVOR outboard propeller retains exceptional control throughout turns, at high and low speeds, and during acceleration. This blade geometry is perfect for boaters who alternate between slow trolling and open-water cruising, as it is specifically designed to deliver a consistent power curve across different throttle ranges. The three-blade configuration maintains your ride steady and smooth, whether you are running across an expansive lake or negotiating narrow inlets.

Beyond speed, the blade profile of this propeller reduces cavitation and drag, resulting in lower fuel consumption on long trips. It is suited for fishing, cruising, and leisure boats, offering versatility while improving fuel economy, benefits that add up over a full boating season. This propeller is a useful and capable upgrade for boaters seeking a well-rounded replacement that can withstand a variety of circumstances without compromising.

13″ Diameter and 19″ Pitch Outboard Propeller for Responsive Acceleration

This propeller, with a 13-inch diameter and a 19-inch pitch, delivers consistent power and rapid acceleration across a variety of operating conditions. The pitch choice ensures the engine reaches its ideal RPM range, reducing the risk of over- or under-propping, two common problems that degrade performance and eventually increase engine wear. Because of this, it is particularly well-suited for Mercury engines with mid-range horsepower that need a prop that is matched to their torque curve.

For lightweight recreational boats where getting up on plane quickly is crucial, the 19-inch pitch works especially well. The engine responds crisply, whether you are starting from a sandbar or accelerating out of an idle zone, because it balances top-end speed and low-end pull. This outboard propeller’s 13-inch diameter and effective water displacement enable your hull to function as intended.

High-Strength Aluminum Alloy Build for Long-Term Corrosion Resistance

This boat propeller, made of corrosion-resistant aluminum alloy, is lightweight to increase rotational efficiency and can be used for extended periods in both freshwater and saltwater environments. Saltwater environments are infamously harsh on maritime hardware, hastening oxidation and gradually eroding structural integrity. By offering a surface that actively resists the electrochemical deterioration typical of brackish and saltwater operation, VEVOR’s aluminum alloy helps address this issue and significantly increases the propeller’s service life.

Compared to standard aluminum propellers, its aluminum design offers superior impact, corrosion, and bending resistance, making it a wise long-term investment. Because the material is less dense than stainless steel, the engine can spin the propeller with less rotational inertia, enabling it to respond to throttle inputs faster. This propeller is ideal for boaters seeking a balance between performance and durability without the high cost of stainless steel.

15 Spline Tooth Shaft Interface for Secure Engine Connection

This outboard propeller’s 15-spline tooth design guarantees a tight, rattle-free engagement with the drive shaft of the Mercury engine, eliminating the slack and vibration that may result from worn or mismatched spline counts. One of the most important, and often disregarded, considerations when choosing a replacement propeller is spline compatibility. Inaccurate spline counts can lead to premature wear on the gearcase output shaft and propeller hub, or they can prevent installation altogether.

This propeller comes with a sturdy M21 interchangeable hub assembly that guarantees a tight fit to the engine drive shaft and makes installation easier for both novice and seasoned marine mechanics. During rapid acceleration, the M21 hub absorbs stress loads and torque surges, shielding the gearbox from abrupt impact damage. Since this hub arrangement is a standard for Mercury-compatible props, finding replacement hub parts is simple if necessary.

Precise Fitment for Mercury 40–140 HP Engines with 4-1/4″ Gearcase

This propeller is a true OEM-grade replacement for Mercury 40–140 HP outboard engines with a 4-1/4-inch gearcase and right-hand rotation. Only a particular series of Mercury powerheads are compatible with the 4-1/4-inch gearcase design, and VEVOR’s design conforms to those precise dimensional constraints. This feature eliminates the need for guesswork when placing an order; if your engine is compatible with the compatibility list, the propeller will install without requiring any adjustments.

A comprehensive engine-fitting list is included with the VEVOR outboard propeller; for precise compatibility, purchasers are encouraged to confirm the engine model and current propeller specifications. You only need to match four crucial factors, engine brand, horsepower, gearbox diameter, and pitch, to ensure the proper fit. The likelihood of returns, delays, or problems with on-water performance caused by an incorrectly matched propeller is reduced by this methodical approach to compatibility.

OEM Reference No. 48-77346A45 for Verified Direct Replacement Accuracy

As a direct cross-reference to Mercury’s original equipment specification, the OEM part number 48-77346A45 provides buyers with instant assurance that this propeller satisfies factory performance and fitting requirements. Because an OEM reference number links the VEVOR unit directly to the Mercury engineering documentation utilized during original engine production, it removes uncertainty when replacing an aging or damaged prop. Boaters who wish to improve without straying from the performance profile their vessel was originally set up for may find this very helpful.

Having a confirmed OEM cross-reference makes ordering easier and lowers the possibility of compatibility issues for both do-it-yourself boat owners and marine specialists. Before leaving the factory, the VEVOR propeller corresponding to this part number is designed for proper fitment and balance, ensuring it is ready to install and function from the very first use, with no vibration problems, no break-in surprises, just dependable, consistent propulsion.