Yamaha 15-1/4×21 Stainless Steel Propeller Replacement 3 Blade 17 Tooth LH 5-1/4″ Gearcase 300HP Outboard Propeller Saltwater Series XL

The Xspeed Yamaha 15 1/4×21 stainless steel 3-blade LH outboard propeller is an aftermarket replacement configured for 300HP applications. Match diameter, pitch, spline, rotation and gearcase before ordering.

Specifications & Fitment

Selection Notes

Stainless steel construction is suited to applications where blade rigidity and corrosion resistance are important selection factors. The three-blade layout is a conventional all-round configuration for matching engine speed, boat load and target operating range. This is a left-hand rotation propeller; verify rotation before ordering, especially for twin-engine installations.

Compatible Engines

300 HP(4-stroke V8 Engine) 350 HP(4-stroke V8 Engine)

Compatibility Check

• Confirm the engine model, production year and gearcase size.
• Compare diameter, pitch and spline count with the current propeller.
• Use the OEM number only as a cross-reference, not as a genuine-part claim.

Aftermarket Part — Not Genuine OEM. Fitment can vary by engine version and boat setup.

Browse the Yamaha propeller range or request a fitment or wholesale quote.