What Yamaha outboard models fit this water pump repair kit?

It's compatible with various 115-250 HP Yamaha four-stroke outboards, but always cross-check your engine's serial number for exact fit.

How often should I replace the water pump impeller?

Plan on every 2-3 years or 300 hours of operation, or sooner if you notice weak tell-tale flow or overheating.

Is special grease required for installation?

Use a water-resistant, non-petroleum marine grease on the impeller splines to ease installation and prevent seizing.

Can I install this kit myself without experience?

Yes, it's straightforward for handy boaters. Follow a video guide matching your model, and have a service manual handy.

What causes water pump failure in Yamaha outboards?

Debris ingestion, dry running, age-related rubber degradation, and neglected flushing are top culprits.

Does this kit include the full pump housing?

No, it's a repair kit for rebuilding your existing housing—includes impeller, wear plate, seals, and gaskets.

Will this restore full cooling performance?

Absolutely, when installed correctly, it matches or exceeds OEM flow rates for reliable engine temps.

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home > Sierra 18-3310 3310 Yamaha Water Pump Repair Kit > Sierra 18-3310 3310 Yamaha Water Pump Repair Kit

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Sierra 18-3310 3310 Yamaha Water Pump Repair KitKeep 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

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product description

Why choose thelockerguy wholesale?

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

Refer to Sierra's Catalog for more information

SKU: NVN-4002094
MPN: 18-3310
UPC: 030999753298

Sierra 18-3310 3310 Yamaha Water Pump Repair Kit

Name: Sierra 18-3310 3310 Yamaha Water Pump Repair Kit
Brand: www.midwoodautocraft.com
SKU: 14825503339
Price: 63.19 USD
Availability: InStock
Rating: 4.6543 (2171 reviews)