1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke

 
$280.00
International Shipping Quote
Details
  • Brand: Mercury
  • Size: 7.5 9.8 HP
  • Color: Black
  • Style: 2 cylinder - 6/8 splines
  • Condition: Used
  • Notes: 20 inch driveshaft - AS IS
  • SKU: 53411 LRU
  • Manufacturer Part Number: 7811A21 5559A6 7811A6 5559A11 5559A4
  • Country of Manufacture: United States
  • Motor & Engine Type: Mercury
  • Part Type: Motors, Engines & Components
  • Other Part Number: N/A
  • Surface Finish: Painted, Black
  • Inventory Number: 53411 LRU
  • Website Category: Lower Units
  • Website Sub Category: Complete Lower Units
  • UPC: N/A

Part Number

7811A21 supercede - 5559A6 7811A6 5559A11 5559A4 

Key 
Points
  • 20 Inch Driveshaft  
  • Holes in cavitation plate 
  • Will need resealed and new impeller 

Additional Info
  • Shifts and spins smoothly without binding
  • Shafts checked for straightness
  • Driveshaft splines show light wear 
  • Freshwater Condition 

 

Driveshaft splines: 6 

Propeller shaft splines: 8

Driveshaft length from the top of the water pump to top of the shaft: 18-9/10"

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

This is listed for repair.  We will NOT accept returns on this item for any reason. Please read the description carefully to see the issues this part has.

Location: Southcentral Outboards, Altamont, Illinois

 

Fits:

1970 - 1975 7.5 9.8 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 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! 

1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke
1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke1970 1971 1972 1973 1974 1975 Mercury 20" Lower Unit 4 7.5 9.8 HP 2 Stroke