Part number 09141-18005 is a genuine Suzuki 18mm slotted/castle propeller nut used on a wide range of Suzuki outboard motors. This nut secures the propeller to the prop shaft and is an essential component for safe and reliable operation.

Part Specifications

• Component Type: Slotted / Castle Propeller Nut
• Thread Size: 18 mm
• Material: Marine-grade stainless steel or plated alloy
• Cross-References: Replaces or interchanges with Yamaha part number 90171-18M04-00 and aftermarket Sierra part number 18-3726

Common Motor Fitment

This nut fits both two-stroke (DT) and four-stroke (DF) Suzuki marine engines, typically ranging from 40 HP up to 300 HP:

• Mid-Range: DF40A, DF50A, DF60A, DF70, DF90A
• High-Power: DF115A, DF140A, DF150 through DF300 (including Watergrip configurations)
• Legacy Models: DT55, DT75, DT85, DT90, DT115, DT140

Related Assembly Parts

When replacing this prop nut, it is often recommended to inspect or replace the components that secure it:

• Cotter Pin: Suzuki part #09204-03003 – Prop Pin (slides through the shaft and locks the castle nut grooves). Note: 09204-03004 may also apply — check your model.
• Spacer / Propeller Washer: Suzuki part #09160 series
• Complete Kit: Suzuki Type V Propeller Nut Kit (Part #57630-94500) — includes nut, cotter pin and washer