Minn Kota MKP-9 Prop Nut Kit A (3/8")

Minn Kota MKP-9 Prop Nut Kit A — 3/8" Prop Shaft

The Minn Kota MKP-9 is the OEM prop nut kit for a wide range of Minn Kota trolling motor propellers on 3/8" prop shafts. It contains the prop nut and washer needed to correctly secure and retain the prop on the motor shaft. This is the same hardware included in new MKP-6 and MKP-7 prop kits, and is the correct replacement when the original nut or washer is lost, damaged, or corroded.

Part Information

• Part Number: 1865010
• SKU: 27-1865010
• Brand: Minn Kota
• Official Product Type: Prop Nut Kit (Kit A)
• Shaft Size: 3/8"

Kit Contents

• Prop nut × 1
• Washer × 1

Compatible Applications

MKP-9 / Kit A is the correct prop nut kit for the following Minn Kota props:

• MKP-2 Vanishing Prop (2061121 / 1865002)
• MKP-3 Vanishing Prop (2061151 / 1865004)
• MKP-6 Weedless Wedge Prop (2061125 / 1865003)
• MKP-7 Weedless Wedge Prop (2091150 / 1865006)
• MKP-25 Power Prop (2091130 / 1865015)
• MKP-37 Power Prop (2091170 / 1865022)

Parts Desk Insights

Best Use Case: Keep a spare MKP-9 kit on board any time you carry a spare prop. The prop nut is a small but critical part — if it is lost or damaged during a prop swap on the water, you cannot reinstall the prop safely. At this price point it makes sense to keep one in the tackle box or the boat's tool kit alongside any of the compatible props above.

Common Issues: The most frequent problem is overtightening — the prop nut should be snug but not forced, as the nylon locking feature in the nut can be compromised by excessive torque or reuse after it has been removed multiple times. If the nut no longer holds the prop securely after reinstallation, replace it rather than continuing to tighten. Also confirm you have the correct kit size — this is the 3/8" shaft version (Kit A / MKP-9). If your motor uses a 1/2" shaft, see the MKP-10 Prop Nut (1/2") instead.

Related Products

• Minn Kota MKP-6 Weedless Wedge Prop 2061125 — compatible prop; MKP-9 included in kit
• Minn Kota MKP-7 Weedless Wedge Prop 2091150 — compatible prop; MKP-9 included in kit
• Minn Kota MKP-37 Power Prop — compatible prop for MKP-9
• Minn Kota MKP-10 Prop Nut (1/2") — prop nut for larger 1/2" shaft motors
• Minn Kota MKP-23 Prop Nut — prop nut for other compatible motor models
• Minn Kota MKP-34 Prop Nut — prop nut for other compatible motor models
• Minn Kota MKP-38 Weedless Wedge 2 Prop 2341160 — updated weedless prop for compatible motors
• Minn Kota MKP-39 Weedless Prop 1865039 — weedless prop for QUEST-series motors

Service Interval

No scheduled service interval. Inspect the prop nut each time the prop is removed or reinstalled. Replace if the nut shows corrosion, if the nylon locking element is worn or missing, or if the nut no longer seats and holds securely on the prop shaft.

Technical FAQ

• What is included in the MKP-9 kit? One prop nut and one washer. The drive pin is not included — the drive pin is part of the prop assembly and is typically reused unless damaged.
• Is this the right kit for my motor? MKP-9 is Kit A for 3/8" prop shafts. Check your current prop number against the compatible list above. If your prop is not listed, verify your motor's shaft diameter and cross-reference with the MKP-10 (1/2"), MKP-23, or MKP-34 before ordering.
• Can I reuse the prop nut after removing the prop? Once is typically fine if the nut and nylon locking element are in good condition. If the nut has been removed and reinstalled multiple times, or if the prop nut feels loose, replace it — the nylon lock wears with each use.
• Does this kit include a drive pin? No. The drive pin is part of the prop kit (included with MKP-6, MKP-7, etc.) and is not part of the MKP-9 nut kit. If your drive pin is lost or damaged, it needs to be sourced with the prop replacement kit.
• What happens if I overtighten the prop nut? Overtightening can damage or compress the nylon locking insert, reducing its ability to hold the prop securely. Tighten to snug and firm — do not use excessive force or impact tools.