1 YEAR WARRANTY! SEI 1976-1988 Mercury 20" Lower Unit V6 135 150 HP 2:1 Ratio

This lower unit does have a 2 to 1 gear ratio and does have the internal driveshaft nut. When we opened this up, we noticed that the gears look almost brand new. There are scuffs and scratches in the paint, but this is very common in lower units. This does not come with the trim tab. There is nothing stopping this lower unit from being a great replacement! Please note that this is a SEI lower unit, not an OEM!  Purchase with confidence!

Driveshaft measures - 21-1/2" - from the top of the waterpump housing to the end of the driveshaft
Driveshaft spline count - 8
Propshaft spline count - 15

General Information

• Freshwater condition
• Opened & Inspected
• Professionally Cleaned
• New Impeller
• Pressure checked to 12 PSI minimum
• Fully Resealed
• Shafts checked for straightness
• 1 year mechanical warranty

Criteria to validate your 1 year warranty:

• Core must be of equal or greater value
• 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

If you have any questions or concerns, please do not hesitate to contact us at 618-487-9499 and we would be happy to help!