1977 - 1992 1993 Yamaha Mariner 20" Lower Unit 20 25 28 30 HP 6 MONTH WARRANTY

Part Number

309S87301-1

Key Points

• 20 Inch Driveshaft  
• New impeller installed
• Warranty with exchange of a spinning core

Additional Info

• Shifts and spins smoothly without binding
• Shafts checked for straightness
• Driveshaft is in good condition with light wear
• Gears & clutch are in good condition with light wear
• Holes in cavitation plate for fin
• Freshwater Condition
• Unit did pressure check
• New Impeller installed

Propeller shaft: 10 Splines

Driveshaft: 14 Splines

Driveshaft length from the top of the water pump to top of the shaft: 18-9/16"

Please add oil before use. This unit is shipped empty.

This lower unit qualifies for a 6 month warranty.  The warranty is validated by your core.  In order to qualify for this, you must send in that core.  Both shafts must spin and it must be complete.  We will send a label for you to return your core in our box after receipt of the unit you’ve purchased.  If you do not have a spinning core, you may call in after your purchase and buy the 6 month warranty for 10% of the purchase price.  If you do not return a core or purchase a warranty, this unit will be sold with a 45 day warranty and nothing more or less.

Location: Southcentral Outboards, Altamont, Illinois

Fits:

1977-1993 - 20 25 28 30 HP

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 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!