Minn Kota | Trolling Motor Propeller | Weedless Wedge 2 Prop | 112lb Thrust | MKP-38 | 1865023

Product Overview

The Minn Kota | Trolling Motor Propeller | Weedless Wedge 2 Prop | 112lb Thrust | MKP-38 | 1865023 is an elite, high-thrust marine propeller engineered to deliver uncompromised weed-evasion and raw pushing power for Minn Kota's most powerful 36-volt trolling motor systems. When navigating dense fields of thick freshwater hydrilla, heavy lily pads, marsh grass, or brackish weeds, standard propellers easily become choked and tangled, forcing you to continuously raise the motor to clear the blades or rapidly draining your battery bank due to underwater drag. The Minn Kota MKP-38 solves this operational challenge completely by deploying a patented, swept-back blade geometry featuring flared leading edges. This advanced structural design utilizes physical centrifugal force to push weeds away from the hub, allowing the propeller to slice cleanly through the thickest cover at any speed tracking line without bogging down the electric motor or sacrificing top-end acceleration.

Molded entirely from a proprietary, glass-reinforced composite polymer matrix, this heavy-duty 2-blade propeller features an exceptional strength-to-weight ratio. The material is chemically balanced to remain completely rigid under full 112-pound thrust loads, eliminating blade flex to translate every ounce of 36V electrical energy straight into forward or reverse movement. The MKP-38 is precision-balanced from the factory to fully eliminate lower-unit wobbling and excessive mechanical vibration, drastically lowering the amp draw on your deep-cycle batteries while preserving absolute silent stealth over shallow fishing structures. The complete replacement kit comes fully loaded and ready for an instant hardware overhaul, containing the premium black composite propeller, an authentic steel shear pin, a heavy-duty nylon-locking nut, and a flat washer.

Key Features

• Patented Weedless Wedge 2 Design: Built with unique swept-back, flared blade profiles that push weeds away from the hub, cutting cleanly through thick cover without wrapping or stalling.
• Maximum 112 lb Thrust Optimization: Custom-engineered to handle the immense torque and high rotational stresses generated by Minn Kota’s highest-output 36V electrical drivetrains.
• Glass-Reinforced Composite Form: Molded from an advanced, high-density polymer matrix that resists impact chipping, structural warping under heavy load, and UV weathering.
• Complete Clamping Hardware Pack: Arrives fully equipped with a replacement high-tensile steel shear pin, a nylon-locking nut, and a flat backing washer for a tool-free hardware refresh.
• Maximizes On-Water Battery Runtime: Precision-balanced architecture eliminates lower-unit wobbling and harmonic hums, reducing power draw to extend your runtime on long fishing days.
• Authentic OEM Factory Fitment: Certified as an original Minn Kota replacement accessory, guaranteeing an absolute, flush physical seat onto your trolling motor's 4-inch diameter hub.

Compatibility Information

The Minn Kota Weedless Wedge 2 Prop MKP-38 features a highly specific compatibility layout centered around the diameter of your trolling motor's lower unit torpedo housing. It is engineered explicitly to fit Minn Kota motors utilizing a large 4-inch motor diameter hub.

This includes extensive compatibility across Minn Kota's premier 36-volt high-thrust lines carrying a **112lb thrust rating**, such as the **Minn Kota Ultrex 112, Ulterra 112, Terrova 112, Fortrex 112, and Riptide 112** freshwater and saltwater bow-mount families. It is critical to note that the MKP-38 **will not fit** smaller 12V or 24V trolling motor systems pulling 30lb to 80lb of thrust, which utilize smaller 3-1/4 inch or 3-5/8 inch hub diameters (like the MKP-32 or MKP-33). It is fully rated and approved for use in both freshwater lakes and high-salinity coastal saltwater environments.

Frequently Asked Questions

What is the structural advantage of a 2-blade Weedless Wedge 2 prop compared to a standard 3-blade prop?

The primary advantage of the 2-blade Weedless Wedge 2 architecture is its specialized ability to shed weeds while maintaining high torque and thrust efficiency. A 3-blade prop has narrower spacing between individual blades, which acts like a basket that easily traps and wraps thick stringy vegetation like hydrilla around the shaft hub. The MKP-38 uses two massive, sweeping blades with extended open tracking zones between them. Combined with the flared, curved leading edges, this layout forces weeds to slide outward off the blade tips instantly rather than wrapping, keeping your lower unit perfectly clear.

How tightly should I screw down the nylon-locking nut during the installation process?

When fastening the premium nylon-locking nut onto your 112lb motor shaft, use a standard 1/2-inch socket wrench or a specialized Minn Kota prop wrench. Tighten the nut clockwise firmly until the internal nylon locking ring engages the steel shaft threads and the flat washer presses completely flush against the composite propeller hub. Give it an additional 1/4 to 1/2 turn to secure the compression lock. Avoid over-tightening with high-powered automatic impact guns, as excessive force can strip the threads, bend the internal shear pin, or crack the prop hub.

What is the purpose of the steel pin included inside this replacement kit?

The small steel pin is called a shear pin, and it serves as a critical mechanical safety fuse designed to protect your trolling motor's internal electric motor from catastrophic structural damage. When you are tracking along a shallow flat or weedy marsh bank and the spinning propeller violently strikes a solid underwater hazard—such as a large rock, concrete boat ramp, or heavy submerged log—the shear pin is engineered to snap in half intentionally. This mechanical break decouples the prop from the engine, preventing the high-impact shock from bending the main steel armature shaft or shattering the internal magnets, allowing you to easily replace the pin rather than the entire motor.

Can I safely use this black replacement propeller on a white Minn Kota Riptide 112lb saltwater motor?

Yes, absolutely. From a purely structural, mechanical, and physical standpoint, the MKP-38 Weedless Wedge 2 Prop is fully compatible with white Minn Kota Riptide saltwater trolling motor models, provided the Riptide motor carries a matching 112lb thrust rating with a 4-inch hub diameter. Minn Kota’s composite props are completely inert and non-metallic, meaning they contain no components that can rust, pit, or suffer from galvanic corrosion in highly conductive saltwater bays. The only difference is cosmetic—installing this black prop onto a white Riptide lower unit will create a black-and-white contrast layout, but it will deliver the exact same high-thrust weedless performance.

Why is my trolling motor vibrating loudly after installing this new replacement prop?

If your trolling motor exhibits a loud humming noise or heavy physical vibration after installing the MKP-38, it is typically caused by one of two installation alignment issues. First, check to ensure that the internal steel shear pin is sitting perfectly centered inside its shaft slot and has not slid slightly to one side, which will cause the propeller to seat crookedly. Second, inspect the prop shaft itself for any tangled loops of braided fishing line wrapped behind the prop. A buildup of compressed fishing line can push the prop forward out of balance and can quickly destroy the lower unit's rubber oil seals, allowing water to leak into the electric motor compartment.

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