Bonbo Yamaha Outboard Propeller Mounting Hardware Kit — Fits 150–300 HP, CNC Brass 5‑Piece

Bonbo's complete propeller mounting hardware kit supplies the thrust washer, spacer, washer, nut and cotter pin engineered to replace Yamaha 150–300 HP OEM part 6E5-45987-01.

When a prop nut, spacer or cotter pin is lost or damaged at sea, having a precise replacement kit matters. This Bonbo kit is CNC-machined from brass to match the fit and function of Yamaha’s original mounting hardware for many 150–300 HP outboards, letting you restore secure propeller attachment quickly and affordably. The set arrives ready to install and is intended as a direct-fit replacement so you can get back to the water without improvising with mismatched parts.

Which Yamaha engines and models will this kit fit?

This kit is made to be compatible with Yamaha outboards in the 150–300 HP range that use the OEM mounting hardware 6E5-45987-01. Always compare the part shape and dimensions to your existing components before installation to confirm match.

• Designed for Yamaha 150–300 HP outboard applications that call for OEM 6E5-45987-01
• Includes the same five-piece complement found in original Yamaha kits
• Intended as a direct replacement — check year/model-specific service manual for verification

How does the kit hold up to corrosion and wear in a marine environment?

Bonbo uses CNC-machined brass for its hardware, giving good resistance to rust and normal wear compared with lower-grade metals. Brass retains mechanical strength while resisting saltwater corrosion better than plain steel in typical boating conditions.

• CNC-machined brass construction for consistent tolerances and durability
• Improved corrosion resistance versus uncoated steel fasteners
• Suitable for routine use and as an onboard spare to replace damaged parts

What exactly comes in the box and how is it used during installation?

The kit contains five pieces: one thrust washer, one spacer, one washer, one nut and one cotter pin—matching the set required to secure Yamaha propellers. These components stack in the same sequence as OEM hardware to properly position and lock the propeller onto the prop shaft.

• 1 x thrust washer — bears axial load from the propeller hub
• 1 x spacer — maintains correct shaft-to-propeller clearance
• 1 x washer and 1 x nut — clamp the assembly on the shaft
• 1 x cotter pin — locks the nut to prevent loosening during operation

Can I rely on this kit as a replacement for original Yamaha parts?

Bonbo markets this hardware as a direct replacement for OEM 6E5-45987-01 in both form and function. It’s manufactured to match the original geometry and intended for users who need immediate, affordable replacements aboard or in the shop.

• Manufactured to emulate OEM dimensions and installation sequence
• Sold as a single complete set for convenience and fast replacement
• 30-day satisfaction return policy provides added purchase confidence

Who is this for: This propeller hardware kit is intended for boat owners, mechanics and marinas who operate Yamaha outboards in the 150–300 HP range and need an accurate replacement for lost or damaged propeller mounting parts. It’s also useful as an onboard spare pack for anglers, operators of workboats, or anyone who wants to avoid downtime from missing or corroded fasteners. Before installing, verify compatibility with your engine’s service manual and inspect dimensions against your original parts to ensure a safe fit.