$1,000.00
- Brand: Mercury
- Size: 90 115 125 140 150 HP
- Color: Black
- Style: Inline 6 - 20" driveshaft
- Condition: Used
- Notes: 20" driveshaft- fully resealed
- SKU: 57775 LRU
- Manufacturer Part Number: 7333T24 1655-7333T24 4749A4 5829A7 7333A24
- 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: 57775 LRU
- Website Category: Lower Units
- Website Sub Category: Complete Lower Units
- UPC: N/A
- Shipping: $175.00
Mercury 20" Lower Unit 2.0:1 ✨
Mercury 20" 2.0:1 ✨ lower unit for 1971–1979 outboards, 90 115 125 140 150 HP. Inspected, serviced, and tested for proper function. Gears are replaced only if bad — good OEM gears are retained.
SPECS
❖
| Gear ratio: 2.0:1 | Driveshaft length: 20-13/16″ |
| Driveshaft splines: 8 | Prop shaft splines: 15 |
Driveshaft length measured from the top of the water pump.
WHAT WE DID
❖
| ❖ Fully resealed ❖ Pressure checked to 12 PSI ❖ New water pump impeller installed | ❖ Driveshaft and prop shaft checked straight ❖ Shifts smoothly through gears |
IMPORTANT: Gear oil is NOT included. Oil must be added prior to use.
FITMENT
❖
Mercury 20"
| Years | 1971–1979 |
| Shaft | 20" |
| Horsepower | 90 115 125 140 150 HP |
Verify by model and serial number before purchase to confirm this is the correct unit for your application.
1Year Working Warranty
Backed by Southcentral Outboards. Failures during normal use within the warranty period will be repaired or replaced.
DISCLAIMER
❖
Listing info accurate to the best of our knowledge but not guaranteed. Fitment is the buyer’s responsibility — verify by model and serial before purchase.
SOUTHCENTRAL OUTBOARDS · ALTAMONT, IL
