YAMAHA 4KB-15521-01-00 Big Starter Starting Idler Gear

( Part Type: Idler Starter Gear ), ( Manufacturer Part Number: 4KB-15521-01-00 ), ( Compatible Year: 2001 )

Review YAMAHA Big Oem Starter Starting Gears Idler Gear Assembly fits BEAR 400 2000–2012

The Yamaha 4KB-15521-01-00 00-12 2001 Big Bear 400 starter is an essential component for starting your Yamaha Big Bear 400 ATV. This starter is specifically designed for the 2001 model and is engineered to provide reliable and efficient starting performance.

The starter motor is built with a powerful 12-volt DC electric motor that delivers sufficient torque to turn the engine over quickly and easily. The motor is housed in a robust and durable cast aluminum housing, which not only protects the internal components but also helps to dissipate heat generated during operation.

One of the critical components of the starter system is the idler gear. The idler gear is responsible for transmitting the drive force from the starter motor to the engine's flywheel. The Yamaha 4KB-15521-01-00 00-12 2001 Big Bear 400 starter comes with a high-quality idler gear made of heat-treated steel. This design ensures that the idler gear can handle the heavy loads and stresses generated during starting, providing long-lasting durability and reliability.

The starter motor also features a conveniently located switch on the handlebar, allowing the rider to easily start the engine with the push of a button. Additionally, the starter motor includes a safety feature that prevents the engine from starting if the shift lever is not in the proper position, ensuring safe and secure operation.

The Yamaha 4KB-15521-01-00 00-12 2001 Big Bear 400 starter is a direct replacement for the original equipment starter and is designed to fit perfectly on the ATV. The starter comes complete with all necessary mounting hardware, making installation quick and straightforward.

In summary, the Yamaha 4KB-15521-01-00 00-12 2001 Big Bear 400 starter is a high-quality and reliable component that ensures your Yamaha Big Bear 400 ATV starts quickly and easily. The robust design, durable idler gear, and convenient handlebar-mounted switch make this starter a must-have accessory for any Big Bear 400 owner.

Pros and Cons of Buying a Yamaha Big Bear 400 Starter Gear (ID: 4KB-15521-01-00-00-12-2001)

The Yamaha Big Bear 400 is a popular all-terrain vehicle (ATV) model known for its durability and performance. One of its essential components is the starter gear, which includes the starter, idler gear, and other related parts. In this analysis, we will discuss the potential advantages and disadvantages of purchasing a Yamaha 4KB-15521-01-00-00-12-2001 starter gear.

1. OEM Compatibility: This starter gear is an original equipment manufacturer (OEM) part, meaning it is designed, manufactured, and tested by Yamaha specifically for the Big Bear 400. This ensures a perfect fit and optimal performance.

2. Improved Starting Performance: A new starter gear can help improve the starting performance of your ATV. A worn or faulty starter gear may cause starting issues, making it difficult to get your vehicle going.

3. Durability: OEM parts are typically built to last longer than aftermarket alternatives. They undergo rigorous testing during the manufacturing process to ensure they meet Yamaha's high-quality standards.

4. Peace of Mind: By using an OEM starter gear, you can have confidence that your ATV is being serviced with genuine Yamaha components. This can help maintain its value and resale potential.

1. Cost: OEM parts, such as the starter gear for the Yamaha Big Bear 400, can be more expensive than aftermarket alternatives. However, the added cost may be worth it for the performance, durability, and peace of mind.

2. Availability: Depending on your location, it might be challenging to find an OEM starter gear for the Yamaha Big Bear 400. In contrast, aftermarket options may be more widely available.

3. Longer Wait Time: Since OEM parts are manufactured specifically for the vehicle, it may take longer to receive them compared to aftermarket alternatives.

The decision to buy the Yamaha 4KB-15521-01-00-00-12-2001 starter gear ultimately depends on your priorities and budget. If you value optimal performance, durability, and peace of mind, an OEM starter gear is an excellent investment. However, if cost and availability are your primary concerns, you may consider exploring aftermarket alternatives.

If you are looking for a high-quality, reliable starter gear for your Yamaha Big Bear 400 and have the budget for it, we recommend purchasing the OEM Yamaha 4KB-15521-01-00-00-12-2001 starter gear. If cost is a concern, you may want to research and compare aftermarket options to find a suitable alternative that meets your needs and budget.

part # 4kb155210100 prices

• $16.99-$34.00

specifications atvsienna:

• for models: 400, Bear
• for makes: Yamaha
• for years: 2000-2012
• part type: Idler Starter Gear
• manufacturer part number: 4KB-15521-01-00
• compatible year: 2001

returns atvsienna:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

general atvsienna:

• ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts
• condition: Used

seller atvsienna:

• rating: 98.6%
• # reviews: 7369

offer atvsienna:

• best offers: True
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: September 27, 2025

payments atvsienna:

• credit card: Mastercard
• other
• wallet: Paypal

shipping atvsienna:

• class: Expedited
• service: USPS Priority Mail
• carrier: USPS
• type: Fixed
• cost: $0.00
• transit: 3-5 Days

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