Stud Bolt by Yamaha

Yamaha UTV/ATV & Side by Side Engine Mount - Available at buywitchdoctors.com

Product Specifications: Genuine OEM Yamaha Stud Bolt, Part # BYS-E1391-00-00.

Keep your machine running like new with a genuine Yamaha Engine Mount paired with premium maintenance parts from buywitchdoctors.com. The engine mount secures the engine to the frame and absorbs vibration and torque so the drivetrain stays aligned and the machine runs smoothly. A solid, properly fitted mount also helps protect nearby components such as exhaust connections, wiring, and hoses from stress and rubbing. Riders most often replace an engine mount after excessive vibration or shaking, clunking noises during acceleration or shifting, cracked, torn, or collapsed rubber, bent or broken brackets, stripped or damaged bolt holes, or damage from a rollover, heavy load, or hard trail impact.

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. The engine mount combines strong, precisely formed steel brackets with oil-resistant, vibration-damping rubber bonded to the metal, so it holds the engine firmly in position, absorbs shock and vibration, and resists cracking, tearing, and fatigue under constant load and heat.

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

• Frame Reinforcements: Frame reinforcements strengthen the areas of the chassis that carry engine and drivetrain loads. When you replace an engine mount, inspect the frame mounting points for cracks or bends so the new mount sits and holds correctly.
• Crankcase & Components: The crankcase houses the crankshaft and bearings and is bolted directly to the mounting points that support the engine. If an impact damaged your engine mount, check the crankcase and its mounting bosses for cracks or leaks while you are working in the area.
• Clutch Covers & Gaskets: Clutch covers and gaskets seal the CVT or clutch housing and keep oil, dust, and moisture out. Engine movement from a failed mount can stress covers and seals, so inspect them for cracks and leaks whenever you replace a mount.
• Propeller / Drive Shaft Components: Propeller and drive shaft components carry power from the engine and transmission to the differentials. A worn engine mount can let the engine shift and change drivetrain alignment, so check these parts for vibration, wear, or damage during your repair.

Frequently Asked Questions (FAQs)

Q: How do I know when my Yamaha engine mount needs to be replaced, and how do I confirm the right one for my machine?
A: Look for excessive vibration, clunks or knocks when you accelerate, shift, or let off the throttle, cracked, split, or sagging rubber, bent or broken brackets, and an engine that sits crooked or moves when you rock it by hand. Before replacing a mount, inspect the frame mounting points, fasteners, and neighboring mounts, since damage there can keep a new mount from holding properly. Because engine mounts vary by model, model year, engine, and trim, confirm the correct part, installation procedure, and tightening guidance using your Yamaha service manual or factory schematic, or contact us with your model and VIN and we will help you match it.

Q: How do mud, water, sand, and heat affect an engine mount on the trail?
A: Heat from the engine and exhaust can dry out and crack rubber over time, and oil or fuel leaks can soften it. Mud, water, and sand can also pack around the mounts, trapping moisture and speeding up corrosion on brackets and bolts. After a wet or dirty ride, rinse the engine bay area gently, look for rubber damage, oil contamination, or rust, and check that the fasteners are secure. Follow your Yamaha service manual for correct installation and inspection guidance so your engine stays firmly and quietly in place.

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

PRO TIP: Symptoms of a Bad UTV Engine Mount

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