1984-1992 Yamaha Mariner 20" Lower Unit Assembly 9.9 15 HP 2 Stroke 6 MONTH WTY

• Pressure checked
• New Impeller
• 6 Month Warranty in exchange for your core!

• This lower unit is in good condition and is ready for installation.
• Shifts & spins with no binding
• Oil was dirty, but no signs of heavy metal or water
• Paint has been stripped and a fresh coat of primer applied
• From the top of the water pump to the end, the driveshaft measures approximately 17-3/4" long and has a 11 spline count on the driveshaft and 8 on the propeller shaft.
• All of the splines are in great shape.
• We are offering a 6 month warranty on this lower unit, Purchase with confidence!

General Information

• Freshwater condition
• Pressure checked to 12 PSI minimum
• New impeller installed 
• No metal in oil
• Shafts checked for straightness
• Shifts and spins smoothly
• Will need to add oil before use

Please remember to add oil before instillation. 

To obtain the 6 month warranty, you MUST send in your core lower unit. We will even pay to have your core shipped to us! Below is the criteria required to validate the warranty:

• Core must be of rebuildable quality
• Cannot be locked up - driveshaft must spin
• Up to 30 days from the date of purchase to send in your core
• Covers mechanical aspects ONLY
• Warranty begins from date of purchase
• Core must be complete and cannot be missing parts

You will receive two copies of the terms and conditions for the lower unit 6 month warranty. One copy MUST be signed and returned with your core. Without a returned signed copy, the six month warranty will not be valid. 

Upon receipt of your core, we will inspect the unit to determine if it meets the criteria to validate the 6 month warranty. We reserve the right to accept or reject any core at our discretion.

We offer a 45 day return policy so you can purchase this 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 and no longer want the item, 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!