Vertex Water Pump Rebuild Kit 821941 — Yamaha Grizzly / Rhino / Viking 2007-2018

Vertex Water Pump Rebuild Kit 821941 — Yamaha Grizzly / Rhino / Viking 2007-2018

Product Description

Prevent overheating and keep your machine on the trail with the Moose Offroad Vertex 821941 Water Pump Rebuild Kit. Specifically engineered for rugged 4-stroke Yamaha ATVs and UTVs, this complete service package eliminates the hassle of tracking down individual components. Over time, stock mechanical seals degrade and bearings wear down, leading to coolant leaks or catastrophic water pump failure. Upgrading with this **heavy-duty rebuild kit** ensures your cooling system maintains proper pressure and temperature control during grueling utility work or aggressive trail rides.

Precision-manufactured to meet or exceed original equipment specifications, each kit utilizes premium-grade components designed to withstand harsh off-road environments. The precision-ground bearings match factory tolerances exactly to minimize shaft vibration, while the high-temperature rubber seals and specialized mechanical water pump seal completely lock out debris while sealing in vital engine coolant. From heavy utility hauling to deep mud navigation, this kit returns your mechanical cooling system to peak operating efficiency.

Top Features: Vertex Water Pump Rebuild Kit

• Complete All-In-One Assembly: Includes every single gasket, O-ring, bearing, and seal required to fully overhaul your factory water pump.
• Application-Specific Components: Contains precision-fit bearings, robust rubber seals, a specialized mechanical water pump seal, side cover gasket, water pump gasket, snap rings, and copper drain washers.
• OEM-Quality Tolerances: Designed as a direct drop-in replacement that eliminates pressure loss and seals against extreme engine temperatures.
• Durable Off-Road Construction: Materials are heavily optimized for 4-stroke engines operating in high-vibration and deep-water environments.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2018	Yamaha	YXC700 Viking VI EPS Ranch Edition
2018	Yamaha	YXM700 Viking EPS
2017	Yamaha	YXC700 Viking VI EPS Hunter
2016	Yamaha	Viking 700 4x4
2015-2016, 2018	Yamaha	YXC700 Viking VI EPS
2014-2015, 2017-2018	Yamaha	YXM700 Viking
2013	Yamaha	YFM450 Grizzly 4x4 Auto EPS
2013	Yamaha	YFM 550 Grizzly 4x4
2013	Yamaha	YFM 550 Grizzly EPS 4x4
2009-2015	Yamaha	YFM700 Grizzly FI 4x4 Auto EPS SE
2009-2012, 2014	Yamaha	YFM550 Grizzly FI 4x4 Auto EPS
2009-2012, 2014	Yamaha	YFM550 Grizzly FI 4x4 Auto
2008-2013	Yamaha	YXR700F Rhino 700 FI
2008-2012, 2014-2015	Yamaha	YFM700 Grizzly FI 4x4 Auto EPS
2007-2015	Yamaha	YFM700 Grizzly FI 4x4 Auto

Frequently Asked Questions

Q: Does this kit include the mechanical water pump shaft seal?
A: Yes, it includes the essential mechanical water pump seal alongside the required oil seals, rubber o-rings, bearings, and gaskets to complete the entire rebuild process flawlessly.

Q: How do I know if my Yamaha Grizzly or Rhino water pump needs a rebuild?
A: Keep a close eye on the weep hole beneath the water pump housing. If you notice engine coolant or oil dripping from this hole, your internal seals have failed and require immediate replacement.

Q: Are special press tools required to seat the mechanical seal?
A: While a dedicated mechanical seal driver or a hydraulic press makes seating the bearing and mechanical seal easier, standard clean drivers or sockets that match the outer race can be used carefully to avoid cracking the carbon face.

Expert Pro-Tip: When pressing the new mechanical seal into your Yamaha engine casing, never apply force directly to the inner spring or the central carbon ring face. Only apply pressure around the outside metal flange of the seal housing. Be sure to clean the water pump shaft completely of any old rust or scaling with fine emery cloth, and apply a light coat of fresh engine oil to the inner rubber lips before sliding the assembly home to protect the new components from tearing on startup.

Recommended Pairings:
o All Quads/ATV Performance Parts & Upgrades
o Yamaha 4-Stroke Performance Parts
o Premium Engine Chemicals & Coolants

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.

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