6D0-8591A-00-00 Yamaha 2004 ECU Engine Control Unit 300 HP V6 1 YEAR WARRANTY

• This Yamaha engine control unit, ECU, was removed from a 2004 300 HP engine and is in good condition.
• All the prongs are in great shape.
• There are some scuffs and scratches here and there, but nothing that will affect the overall performance.
• The mounting holes are also in good condition and are not damaged in anyway.
• There are some chips out of the plug area, however, these should still mount correctly and function as designed. 
• The expoxy on the ECU does have a small slice, this should however, not affect performance. 
• This ECU will have to be re-programmed with your motor. 
• Please refer to the photos to verify what is included in this listing and the condition these parts are in prior to ordering
• This will come exactly as pictured and will make a great replacement for your outboard!

We are now offering a 1-year mechanical warranty for this part. Should you have any problems within this time frame, we will simply refund/replace the item as necessary.

We also offer a 45-day return policy on this product so you can purchase it with confidence. If you have any issues with the product, please reach out to us and we would be happy to help resolve any issue that may occur.

Please be absolutely sure this is the correct one for your motor prior to purchasing. If you purchase this item incorrectly or change your mind, we will accept a return within 45 days. However, we will charge our initial shipping cost and a 20% restocking fee. If you have any questions, please contact us.

Location: Southcentral Outboards, Altamont, Illinois

We have provided this cross-reference with the resources we have available in regards to fitment. This most likely will not fit every model for the years and horsepowers we have listed. We urge you to make sure this is the exact item you need by matching the part number to what is required for your motor. If you need help doing so, please contact us prior to purchasing and we would be happy to help!