- Brand: Mercury
- Size: 35 40 45 50 60 70 HP
- Color: Black
- Style: 2 & 3 Cylinder - Long - 11/13 Splines
- Condition: Used
- Notes: 20" - Fully resealed
- SKU: 57894 LRU
- Manufacturer Part Number: 6038A7 4931A30 6038A18 4931A10 4814A11
- Country of Manufacture: United States
- Motor & Engine Type: Mercury
- Part Type: Motors, Engines & Components
- Surface Finish: Painted, Black
- Inventory Number: 57894 LRU
- Website Category: Lower Units
- Website Sub Category: Complete Lower Units
- UPC: N/A
- Shipping: $50.00
Mercury Long 20" Lower Unit
Mercury Long 20" lower unit for 1972–1979 outboards, 35 40 45 50 60 70 HP. Inspected, serviced, and tested for proper function. Gears are replaced only if bad — good OEM gears are retained.
SPECS
| Driveshaft length: 21-1/2″ | |
| Driveshaft splines: 11 | Prop shaft splines: 13 |
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 |
FITMENT
Mercury Long 20"
| Years | 1972–1979 |
| Shaft | 20" |
| Horsepower | 35 40 45 50 60 70 HP |
Verify by model and serial number before purchase to confirm this is the correct unit for your application.
Backed by Southcentral Outboards. Warranty validated by core return — we provide the shipping label. 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
