Sierra 3312 Yamaha Water Pump Repair Kit
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Sierra 3312 is a Yamaha water pump repair kit designed to refresh the raw-water pump by replacing key wear components inside the pump assembly.
Key Features
- Impeller service kit for Yamaha water pump systems
- Replaces the impeller and essential sealing components to restore proper raw-water circulation
- Includes pump-specific wear parts and O-rings for a complete reseal of the water pump service area
Product Compatibility
- Yamaha outboard raw-water water pump (service/maintenance replacement)
Product Details
- Sierra 3312 Yamaha Water Pump Repair Kit
- Kit SKU (variant): 47-3312
- Includes (kit contents): Dowell pin; Bolt washer; Water pump gasket (18-0244); Bolt (18-0256); Impeller (18-3071); Insert cup (18-3333); Impeller key (18-3302); O-rings (18-7485, 18-7483); Wear plate (18-3344).
- Replaces Yamaha part: 6N6-W0078-00-00
- UPC (from variant barcode): 30999753304
Parts Desk Insights
Best Use Case: Best for scheduled water pump service during off-season maintenance, or when cooling performance suggests the water pump impeller and seals need attention. Replace the pump-kit components together so mating gasket/O-ring surfaces can be resealed properly.
Common Issues: Common service issues include reused/flattened gaskets, O-rings nicked during installation, incorrect orientation of sealing surfaces, and mis-seating the wear plate or insert cup. If cooling output is weak or intermittent after service, re-check impeller seating, confirm the key is properly engaged, and inspect the cooling passages for debris.
Related Products & Accessories
- Impeller Service Kits (category) - Browse the Impeller Service Kits collection to find the correct kit for your specific pump configuration and housing style.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.