- Brand: Mercury
- Size: 40 50 60 70 HP
- Color: Black
- Style: 2 & 3 Cylinder - Long - 11/13 Splines
- Condition: Seller Refurbished
- Notes: Fully Resealed & New Impeller!
- SKU: 36263 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
- Warranty: 1 Year
- Inventory Number: 36263 LRU
- Website Category: Lower Units
- Website Sub Category: Complete Lower Units
- UPC: N/A
- Shipping: $50.00
C# 1643-6037 Mercury 20" Lower Unit 2 & 3 Cyl
C# 1643-6037 Mercury 20" 2 & 3 Cyl lower unit for 1971–1979 outboards, 40 50 60 70 HP. Inspected, serviced, and tested for proper function. Gears are replaced only if bad — good OEM gears are retained. Please note: The paint is in overall good shape with only minor scuffs and scratches. The intake screens are in perfect shape and are not broken or cracked. Please note that this does not come with the propeller or the propeller hardware. 1971-1979 - 40 50 60 70 HP - 2 & 3 Cylinder This unit is interchangeable with 1980-1986 and 1987-1997 models but different housing on this one (rounded cavitation plate on this one).
SPECS
| Driveshaft length: 21-1/2″ |
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 ❖ Professionally cleaned ❖ Opened and inspected |
FITMENT
C# 1643-6037 Mercury 20"
| Years | 1971–1979 |
| Shaft | 20" |
| Horsepower | 40 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
