Mercury 1984 1985 1986 1987 - 1990 Alpha 1 Gen 1 Lower Unit 1 YEAR WARRANTY

• Fully resealed 
• 1 Year warranty with exchange of a spinning core (See below for more info)

• Shifts and spins smoothly without binding
• Shafts checked for straightness
• Driveshaft splines show slight wear 
• Gears & clutch are in great condition with little wear on clutch surfaces 
• Freshwater Condition
• New Impeller
• Fully Resealed & Pressure checked to 12 PSI

Gear Ratio: 1.62-1

Driveshaft splines: 13

Propeller shaft splines: 15 

Driveshaft length from the top of the water pump to top of the shaft: 7-5/8"

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

This lower unit qualifies for a 1 year 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 1 year 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

Alpha 1 Gen 1 

At this time, we are unsure of all the years and horsepowers that this will fit. If you need help identifying if this is the correct fit for your motor, please do not hesitate to contact us prior to purchasing and we would be happy to help!