Mercury 1971-1979 20" Lower Unit 40 50 60 70 HP 2 Stroke 6 MONTH WARRANTY

This specific lower unit is in good condition.  The paint is not perfect but this does not has any effect on the performance. It does shift smoothly in and out of gear without any problems. Given our unprecedented 6 month warranty, you will never find a better deal on an OEM lower unit. Please remember to add oil before use. Purchase with confidence!   

Driveshaft length (top of water pump to top of preload pin) - 21-1/8"
Driveshaft Splines: 11
Prop Shaft Splines: 13

General Information

• Freshwater condition
• Opened & Inspected
• New Impeller
• Pressure checked to 12 PSI minimum
• Shafts checked for straightness
• 6 month mechanical warranty

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 any parts 

Upon receipt of your core, we will inspect the unit to determine if it meets the criteria to validate the 6 month warranty. When you receive your purchased lower unit, there will be installation paperwork included in the package. One copy of the paperwork must be signed returned with your core. If it does not, you will be contacted and granted a 30 day warranty. We reserve the right to accept or reject any core at our discretion. If you have any questions or concerns, please do not hesitate to contact us and we would be happy to help! 

We offer a 30 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.

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!