1. Personal Watercraft Parts Products
  2. sku: 8857770731242633
  3. YAMAHA GJI-U8K31-03-00

YAMAHA GJI-U8K31-03-00 Waverunner Gp Sensor GJ1-U8K31-03-00

fits model: 800. make: Yamaha.

Gj1-u8k31-03-00 Yamaha Gji-u8k31-03-00 Waverunner Gp 800 R Speed Sensor

( Manufacturer Part Number: GJI-U8K31-03-00 ), ( Part Type: Sensor ), ( Materials Sourced From: Japan )

Review YAMAHA Waverunner Gp Speed Sensor fits 800

Introducing the Yamaha GJ1-U8K31-03-00 Waverunner GP800 Sensor, a crucial component of the advanced engine management system in Yamaha's high-performance watercraft. This sensor is specifically designed for use with the Yamaha Waverunner GP800 series, including the GP1800, FX Cruiser HO, and FX SHO models.

The GJ1-U8K31-03-00 sensor plays a vital role in monitoring the engine's functioning by measuring the intake air temperature. The sensor's data is sent to the engine control module (ECM), which uses this information to optimize engine performance and fuel efficiency. By maintaining an accurate intake air temperature reading, the ECM can make adjustments to ignition timing, fuel delivery, and other engine functions to ensure optimal performance and longevity.

This sensor is built with high-quality materials and precision engineering to ensure durability and reliability in even the most demanding marine environments. Its compact design ensures a seamless installation process, while its robust construction stands up to the harsh conditions of continuous water immersion and exposure to UV rays.

The Yamaha GJ1-U8K31-03-00 Waverunner GP800 Sensor is easy to install, with clear instructions provided in the user manual. Simply connect the sensor to the appropriate wiring harness and secure it in place using the included mounting hardware. Once installed, the sensor will begin transmitting critical engine data to the ECM, allowing your watercraft to perform at its best.

Whether you're an experienced watercraft enthusiast or a newcomer to the world of personal watercraft, the Yamaha GJ1-U8K31-03-00 Waverunner GP800 Sensor is an essential upgrade for your watercraft. By ensuring accurate intake air temperature readings and optimal engine performance, this sensor helps you get the most out of your Yamaha watercraft and enjoy your time on the water with confidence and peace of mind.

Pros and Cons of Buying Yamaha GP800 Waverunner Sensor GJ1-U8K31-03-00

The Yamaha GP800 Waverunner GJ1-U8K31-03-00 is a crucial sensor component that plays a significant role in the overall performance and operation of the watercraft. This sensor is essential for maintaining optimal engine functions, including fuel injection and ignition timing. In this analysis, we will discuss the potential advantages and disadvantages of investing in this Yamaha component.

Pros:

1. Enhanced Engine Performance: Replacing the old sensor with a new Yamaha GJ1-U8K31-03-00 can lead to improved engine performance, ensuring smooth and efficient operation.

2. Increased Fuel Efficiency: A malfunctioning sensor can lead to increased fuel consumption. By upgrading to a new sensor, you can save on fuel costs, as the engine will run more efficiently.

3. Extended Engine Lifespan: Regular maintenance, including replacing worn-out sensors, can help extend the lifespan of your watercraft's engine.

4. Enhanced Reliability: A new sensor will provide more accurate data to your engine control module, ensuring reliable operation and reducing the risk of unexpected breakdowns.

5. Better Responsiveness: With the new sensor, your watercraft will respond more quickly to throttle inputs, providing a more enjoyable riding experience.

Cons:

1. Cost: The Yamaha GP800 Waverunner Sensor GJ1-U8K31-03-00 may be considered an expensive replacement for some. However, the long-term benefits of improved performance and reliability can outweigh the initial investment.

2. Installation Complexity: Installing the sensor may require some technical knowledge and skills. If you are not comfortable performing the installation yourself, you may need to hire a professional, which could add to the overall cost.

3. Availability: Depending on your location, it might be challenging to find a local dealer or supplier that carries the specific Yamaha sensor you require.

Conclusion:

The Yamaha GP800 Waverunner GJ1-U8K31-03-00 sensor is a worthwhile investment for those seeking to enhance their watercraft's performance, reliability, and fuel efficiency. Although the initial cost may be a concern for some, the long-term benefits and potential savings make it a wise choice for watercraft enthusiasts.

Recommendation:

If you own a Yamaha GP800 Waverunner and are experiencing issues related to engine performance, consider investing in a new Yamaha GJ1-U8K31-03-00 sensor to address these concerns. While the installation process may require some technical expertise, the benefits of improved performance, reliability, and fuel efficiency make it a worthwhile investment. If you are unsure about the installation process or lack the necessary skills, consider consulting a professional to ensure a successful installation.

Details:

Unit is used and in good condition. Speed Sensor, removed from a 2005 Yamaha Waverunner Gp 800 R.

part #: gjiu8k310300 prices

  • $45.00-$147.95

specifications perwatercraft:

  • for models: 800
  • for makes: Yamaha
  • mpn: Gji-u8k31-03-00
  • part type: Sensor
  • materials sourced from: Japan

returns perwatercraft:

  • policy: No Returns

general perwatercraft:

  • Parts Accessories > Personal Watercraft Parts > Other Parts
  • condition: Used

seller perwatercraft:

  • rating: 100.0%
  • city: Bothell, Washington
  • # reviews: 391

shipping perwatercraft:

  • transit: 3-6 Days
  • class: Standard
  • cost: $10.00
  • carrier: UPS
  • type: Fixed
  • service: UPS Ground

offer perwatercraft:

  • availability: In Stock
  • best offers: True
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • started: October 19, 2025

payments perwatercraft:

  • credit card: Diners-club
  • wallet: Paypal
  • other
for models: 800, for makes: yamaha, part type: sensor, materials sourced from: japan,
category: watercraft parts > parts, sku: 8857770731242633,

Yamaha GJI-U8K31-03-00 Is Similar To:

perwatercraft logo
5 offers $45.00–$147.95 USD
  • Offer #1: $147.95 price + $9.95 shipping estimate = $157.90* total.+$9.95 shipping
  • Offer #2: $45.00 price + $8.13 shipping estimate = $53.13* total.+$8.13 shipping
  • Offer #3: $50.00 price + $10.60 shipping estimate = $60.60* total. Selling as a lot. Guage is NOT working (Unsure so selling as parts).+$10.60 shipping
  • Offer #4: $53.39 price + $0.00 shipping estimate = $53.39* total. This SPEED SENSOR is in very good condition and shows normal signs of wear. Removed From: 2003 Yamaha FX140 FX1000 with 215 HOURS miles.FREE SHIPPING
  • Offer #5: $24.00 price + $0.00 shipping estimate = $24.00* total. May fit other years/models. Removed from a 1995 Yamaha WaveVenture 700.FREE SHIPPING

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