- Brand: Mercury
- Size: 50 55 60 HP
- Color: Black
- Style: 2 Stroke - 3 Cyl - 20" - 1.64:1
- Condition: Used
- Notes: Fully Resealed & Inspected!
- SKU: 52576 LRU
- Manufacturer Part Number: 1671-9760T25 9760T25 9760A25 9760A12 9760A4
- 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: 52576 LRU
- Website Category: Lower Units
- Website Sub Category: Complete Lower Units
- UPC: N/A
- Shipping: $75.00
20" Mercury Lower Unit 2 Stroke 1.64:1 3 Cyl
20" Mercury 2 Stroke 1.64:1 3 Cyl lower unit for 1991–2006 outboards, 50 55 60 HP. Inspected, serviced, and tested for proper function. Gears are replaced only if bad — good OEM gears are retained. Please note: All of the splines are in great condition with just slight wear on the driveshaft splines.
SPECS
| Driveshaft length: 20-5/8″ | Driveshaft splines: 11 |
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 ❖ Professionally cleaned |
FITMENT
20" Mercury
| Years | 1991–2006 |
| Shaft | 20" |
| Horsepower | 50 55 60 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

