Yamaha 115–300 HP Outboard Impeller (Fits Yamaha/Mercury/Selva)

This impeller is an OEM-grade replacement for the high-capacity water pumps used in Yamaha’s large outboard engines ranging from 115 HP to 300 HP. It fits both 2-stroke and 4-stroke Yamaha models, covering popular V4, V6, and V8 outboards often found on offshore fishing boats and high-performance powerboats. The impeller also cross-fits Mercury/Mariner 225 HP 4-stroke engines (early-generation models built with Yamaha powerheads) and their Selva equivalents. This multi-brand compatibility makes it a versatile choice for servicing various engines.

Built to Yamaha’s exact specifications, the 6-blade impeller maintains the strong water flow required to keep big engines cool under demanding conditions – whether you’re running at wide-open throttle or idling on a hot day. Its heavy-duty neoprene rubber vanes are durable yet flexible, and a corrosion-resistant brass spline insert ensures a secure drive and long life. Boaters can trust this impeller to protect expensive high-horsepower engines from overheating, thereby safeguarding your boating adventures.

• Yamaha Applications: Ideal for Yamaha outboards 115, 150, 175, 200, 225, 250, 300 HP (including 2-stroke carb/EFI, HPDI, and 4-stroke EFI models from mid-1980s onward). Maintains factory cooling performance for engines used in offshore fishing, water sports, and commercial service.
• Mercury/Selva Compatibility: Interchangeable with Mercury F225/F250 4-stroke outboards (circa early 2000s models that use Yamaha-derived powerheads) and corresponding Selva marine engines. Provides a single solution for boats that have Yamaha-built Mercury or Selva motors.
• High-Flow Performance: Ensures high-volume cooling water flow required by large displacement engines at all speeds. Recommended for boats ~6–9 m (20–30 ft) running high-output motors, ensuring stable engine temperatures during extended high-speed operation.
• Durability & Fit: Manufactured from premium marine-grade rubber with a brass hub for perfect fitment and drive. Resists heat and saltwater conditions, ensuring reliable service in marine environments. Comes ready to install to quickly revive your water pump’s efficiency.
• Usage & Maintenance: Perfect for offshore boats, performance RIBs, and cruisers that rely on these engines. It’s advisable to replace the impeller annually or every 100 hours in high-horsepower outboards. Keeping a spare impeller onboard for long voyages adds extra peace of mind.