Sierra 18-3310 3310 Yamaha Water Pump Repair Kit
Sierra 18-3310 3310 Yamaha Water Pump Repair Kit — Product description
Keep your Yamaha outboard running cool and reliable with a fresh water pump rebuild. This kit delivers everything needed to restore optimal cooling performance, tackling the wear from constant exposure to saltwater, debris, and high RPMs. Designed as a direct-fit solution for select Yamaha models, it ensures seamless water flow to prevent overheating during those long days on the water.
What's Included for a Complete Rebuild
- High-quality impeller crafted from durable neoprene for superior flexibility and longevity.
- Precision-machined housing and wear plate to maintain tight tolerances.
- Gaskets, seals, and O-rings that resist cracking and leaking under pressure.
- Key shaft and liner components for easy, reliable reassembly.
Every piece is engineered to match original specifications, minimizing downtime and maximizing engine protection.
Why Rebuild Your Water Pump Now
A failing water pump often shows subtle signs like steam from the tell-tale, reduced stream pressure, or erratic engine temps. Ignoring it risks costly damage to cylinders, heads, or pistons. Regular rebuilds—every 2-3 years or 300 hours—extend engine life and boost resale value. Boaters report smoother idling and better top-end power after a simple refresh, especially in harsh marine environments.
Real-World Advantages
- Cost-Effective: Far cheaper than a full pump replacement, saving hundreds without sacrificing quality.
- DIY-Friendly: Most installs take under an hour with basic tools, no special skills required.
- Enhanced Durability: Upgraded materials handle ethanol-blended fuels and abrasive conditions better than stock.
- Peace of Mind: Restores factory cooling efficiency for fishing trips, towing, or offshore runs.
Step-by-Step Rebuild Guide
Transform a sluggish pump into peak performer with these proven steps. Always work in a clean area and inspect for hidden damage.
- Drain coolant and remove the lower unit or access the pump assembly.
- Disassemble carefully, noting part positions—use a marker for reference.
- Clean all mating surfaces thoroughly to ensure a leak-free seal.
- Install new impeller with a dab of marine grease; twist gently to seat properly.
- Reassemble with fresh gaskets, torque to spec, and test-run in a barrel before trailering.
Pro Tip: Prime the pump by filling it with water before first start-up to avoid dry-running damage.
Ongoing Care for Lasting Performance
Extend the life of your rebuild with smart habits:
- Flush with fresh water after every saltwater use.
- Check tell-tale flow weekly—weak stream means inspect ASAP.
- Store engines vertically or winterize properly to prevent impeller dry-rot.
- Monitor for rubber hardening, a common foe in hot climates.
Pair this with annual impeller inspections, and you'll sidestep 90% of cooling failures.
Frequently Asked Questions
SKU: NVN-4002094
MPN: 18-3310
UPC: 030999753298
Technical specifications
| Brand | Sierra Engine Parts |
| Model | Sierra 18-3310 3310 Yamaha Water Pump Repair Kit |
| SKU / MFR# | 4002094 |
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Frequently asked questions
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