Impeller Shaft Gear by Yamaha

Yamaha UTV/ATV & Side by Side Water Pumps & Parts - Available at buywitchdoctors.com

Product Specifications: Genuine OEM Yamaha Impeller Shaft Gear, Part # 8ES-12459-01-00.

Keep your machine running like new with a genuine Yamaha Water Pump or Part paired with premium maintenance parts from buywitchdoctors.com. The water pump circulates coolant between the engine and radiator, pulling heat away from critical components so your engine holds a steady operating temperature. A healthy pump protects against overheating, warped components, and costly engine damage, especially during slow crawls, heavy towing, and hot-weather rides. Riders most often replace water pumps and parts after coolant leaks at the weep hole or seals, a whining or grinding bearing noise, overheating or rising temperature readings, or milky or contaminated coolant.

Why Choose Genuine OEM Yamaha Parts?

Choosing original equipment manufacturer (OEM) parts ensures your vehicle maintains its factory-standard performance, reliability, and fuel efficiency. Genuine parts eliminate the guesswork of aftermarket alternatives, offering a seamless integration with your engine's configuration.

• Exact-Fit Design: Matched to Yamaha's original bolt patterns, sealing surfaces, and dimensions for a leak-resistant fit.
• Factory-Spec Quality: Built to the same standards as the parts installed on your machine at the factory.
• Peace of Mind: Skip the trial and error of universal or aftermarket parts that may not seal or align correctly.

Premium Materials & Precision Engineering

Crafted to strict factory tolerances, these components utilize high-grade alloys and chemical-resistant seals. This specialized engineering withstands harsh off-road vibrations, extreme temperatures, and modern fuel additives, preventing premature wear and leaks. Water pump impellers, shafts, bearings, and mechanical seals are precisely matched to work together, moving coolant efficiently while resisting corrosion, cavitation, and seal leakage over long service intervals.

Comprehensive Model Fitment (2015-Current)

This genuine OEM part is engineered for a wide range of Yamaha side-by-side (SxS) and all-terrain vehicles (ATV) built from 2015 to the current model year. Please verify your series matches below:

Utility Task Vehicles (UTVs / Side-by-Sides)

• Viking Series: Viking 700 EPS, Viking 700 Ranch Edition, Viking VI EPS
• Wolverine Series: Wolverine R-Spec, Wolverine X2 850, Wolverine X4 850, Wolverine X2 1000, Wolverine RMAX2 1000 (Sport, XT-R, Limited), Wolverine RMAX4 1000
• YXZ Series: YXZ1000R, YXZ1000R SS

All-Terrain Vehicles (ATVs)

• YFZ Series: YFZ50, YFZ450R, YFZ450R SE
• Raptor Series: Raptor 90, Raptor 110, Raptor 700, Raptor 700R, Raptor 700R SE
• Grizzly Series: Grizzly 90, Grizzly 110, Grizzly 700 EPS, Grizzly 700 SE, Grizzly 700 XT-R
• Kodiak Series: Kodiak 450, Kodiak 450 EPS, Kodiak 700, Kodiak 700 EPS, Kodiak 700 SE

⚠️ IMPORTANT DISCLAIMER: Fitment can vary by production date and sub-model trim. Always verify your exact original equipment part number from your vehicle's schematic or consult a certified technician before finalizing your purchase to guarantee flawless compatibility.

Other Popular Parts & Secondary Accessories

• Water Pump Rebuild Kits: Rebuild kits bundle the seals, bearings, and related wear items needed to refresh a worn water pump without replacing the whole assembly. If your pump housing and impeller are still in good shape, a kit can restore leak-free operation and save you money.
• Coolants: Fresh coolant carries heat away from the engine while protecting internal passages from corrosion and scale. Refilling with new coolant after a water pump replacement helps protect your new pump's seals and keeps the system running clean.
• Radiators & Components: The radiator releases the heat your water pump carries out of the engine, and its caps, fans, and mounting components keep the system sealed and cooling efficiently. Inspect for bent fins, clogs, or a weak cap when you replace your pump so the whole cooling system works together.
• Radiator Hose / Line: Radiator hoses and lines connect the engine, water pump, and radiator so coolant can circulate freely. Aged, soft, or cracked hoses can leak or collapse under heat, so replacing them with your pump helps prevent overheating and roadside surprises.

Frequently Asked Questions (FAQs)

Q: How do I know if my Yamaha water pump needs to be replaced or rebuilt?
A: Common signs include coolant seeping from the pump's weep hole or seal area, a grinding or whining noise from the bearing, overheating, low coolant levels with no other visible leak, or coolant mixed with engine oil. Before replacing the pump, check for a leaking hose, a faulty radiator cap, or a stuck fan, since those issues can look like pump failure. For proper inspection steps and the correct pump or components for your model, consult the Yamaha service manual or factory schematic.

Q: How do mud, water, sand, and heat affect my water pump and cooling system?
A: Packed mud and debris can block radiator airflow, while sand can wear seals and clog fins, making the water pump work harder and the engine run hotter. Extended slow riding in high heat adds even more strain on the cooling system. After tough rides, rinse the radiator and surrounding area gently, check coolant level when the engine is cool, and watch for leaks or unusual noises. Refer to the Yamaha service manual or factory schematic for the correct coolant type, bleeding procedure, and installation guidance for your model.

PRO TIP: Learn More about Yamaha OEM vs. Aftermarket Parts

PRO TIP: Signs of a Bad UTV Water Pump: How to Diagnose, Test, and Replace

PRO TIP: Why Is My Coolant Tank Bubbling, Boiling Over, or Spitting Out Fluid?

PRO TIP: UTV/ATV Cooling Issues Explained.

PRO TIP: Learn How to Test Your UTV, Motorcycle or ATV Coolant.

Are You Looking to Find Great Places & Adventurous Trails to Ride Your UTV, Side by Side or ATV? Check out these highly recommended places:

• Northern Outdoors
• Imperial Sand Dunes
• Johnson Valley OHV Area
• Gypsum City OHV Park
• Leatherwood Off-Road Park