1. ATV/Side-by-Side/UTV Parts & Accessories On Sale
  2. sku: 7387073836152632
  3. YAMAHA 43D-E5640-00-00

YAMAHA 43D-E5640-00-00 Starter Idler Reduction Gear 878

fits model: Yfm90, Raptor. make: Yamaha. year: 2009–2013.

43d-e5640-00-00 Yamaha #878 Starter Idler Reduction Gear Raptor 90 Yfm90 2009-2013

( Part Type: Idler Starter Gear ), ( Manufacturer Part Number: 43D-E5640-00-00 )

Review YAMAHA #878 Starter Idler Reduction Gear 90 fits RAPTOR YFM90 2009–2013

The Yamaha 43D-E5640-00-00 Starter Idler Reduction Gear is an essential component for the Yamaha Raptor 90, model years 2009 to 2013. This part is specifically designed to reduce the load on the starter motor, making starting easier and more efficient.

The Idler Reduction Gear is a compact, yet robust component, engineered from high-quality materials. Its precise dimensions ensure a perfect fit, ensuring a seamless replacement process. The gear is designed to mesh smoothly with the engine's existing drive system, providing a reliable and consistent power transfer.

The Idler Reduction Gear features a unique, patented design that reduces the number of turns required to start the engine. This not only makes starting easier but also reduces the wear and tear on the starter motor, increasing its lifespan. The gear's reduction ratio is optimally engineered to provide the ideal balance between ease of starting and motor protection.

The gear is manufactured to the highest standards, ensuring durability and reliability. Its robust construction makes it resistant to wear and tear, even in the most demanding conditions. The gear's precision machining ensures that it operates smoothly and quietly, enhancing the overall riding experience.

The installation process for the Yamaha 43D-E5640-00-00 Starter Idler Reduction Gear is straightforward. It comes complete with all necessary hardware for installation, making it a convenient and hassle-free upgrade for your Yamaha Raptor 90. The gear is easy to install, with clear instructions included in the packaging.

In summary, the Yamaha 43D-E5640-00-00 Starter Idler Reduction Gear is an essential upgrade for the Yamaha Raptor 90, model years 2009 to 2013. Its unique design reduces the load on the starter motor, making starting easier and more efficient, while also increasing the lifespan of the starter motor. The gear's robust construction ensures durability and reliability, making it an excellent investment for any Yamaha Raptor 90 owner.

Pros and Cons of Buying Yamaha 43D-E5640-00-00 878 Starter Idler Reduction Gear for Yamaha Raptor 90 (2009-2013)

Introduction:

The Yamaha 43D-E5640-00-00 878 Starter Idler Reduction Gear is a crucial component of the starting system for Yamaha Raptor 90 models from 2009 to 2013. This part can help address issues related to difficult starting or idling, making it an essential investment for Raptor 90 owners. In this article, we will discuss the pros and cons of purchasing this Yamaha starter idler reduction gear.

Pros:

1. Improved starting performance: The primary benefit of this starter idler reduction gear is its ability to enhance the starting process. By reducing the load on the starter motor, this part makes it easier to turn the engine over, resulting in a smoother and more reliable start.

2. Reduced wear and tear: The idler reduction gear lessens the strain on the starter motor, leading to less wear and tear. This prolongs the lifespan of the starter motor and saves you from costly repairs or replacements.

3. Enhanced durability: Yamaha's OEM starter idler reduction gear is designed to be robust and long-lasting. This part is built to withstand the rigors of off-road riding, ensuring reliable performance in various conditions.

Cons:

1. Cost: Original equipment manufacturer (OEM) parts, like the Yamaha 43D-E5640-00-00 878 Starter Idler Reduction Gear, tend to be pricier compared to aftermarket alternatives. This could be a potential drawback for budget-conscious consumers.

2. Availability: Depending on your location and the supplier, availability of this OEM part might be limited. This could result in longer wait times for repairs or replacements.

Conclusion:

The Yamaha 43D-E5640-00-00 878 Starter Idler Reduction Gear is an essential investment for Yamaha Raptor 90 (2009-2013) owners experiencing starting issues or looking to prevent potential problems. Although it comes with a higher price tag compared to aftermarket alternatives, its benefits, such as improved starting performance, reduced wear and tear, and enhanced durability, make it worth considering. If you value reliability and performance, this OEM part is an excellent choice.

Recommendation:

If you own a Yamaha Raptor 90 from the 2009 to 2013 model years and are experiencing starting difficulties, or if you want to prevent potential issues, investing in the Yamaha 43D-E5640-00-00 878 Starter Idler Reduction Gear is recommended. This part will improve your starting experience, reduce wear and tear on the starter motor, and ensure long-lasting performance.

specifications utvyank:

  • for models: Yfm90, Raptor
  • for makes: Yamaha
  • for years: 2009-2013
  • part type: Idler Starter Gear
  • manufacturer part number: 43D-E5640-00-00

offer utvyank:

  • started: August 6, 2025
  • quantity: 1
  • sold: 0
  • availability: In Stock
  • options: Ship-to-home

returns utvyank:

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

payments utvyank:

  • wallet: Apple-pay
  • other
  • credit card: Discover

shipping utvyank:

  • class: Standard
  • carrier: USPS
  • transit: 5-9 Days
  • type: Fixed
  • service: USPS Ground Advantage
  • cost: $0.00

general utvyank:

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

seller utvyank:

  • # reviews: 3328
  • rating: 99.6%
for models: yfm90, raptor, for makes: yamaha, for years: 2009-2013, part type: idler starter gear,
category: atv parts > atv, side-by-side utv parts accessories, sku: 7387073836152632,

Yamaha 43D-E5640-00-00 Is Similar To:

utvyank logo