- Brand: Mercury
- Size: 135 150 175 200 HP
- Style: 1.78-1 - 20" - V6 - 2 Stroke
- Condition: Re-manufactured
- Notes: Fully Resealed & Pressure Checked With New Impeller!
- SKU: 59597 LRU
- Manufacturer Part Number: 814247T4 814247A4 9572A4
- Country of Manufacture: United States
- Motor & Engine Type: Mercury
- Part Type: Motors, Engines & Components
- Other Part Number: N/A
- Inventory Number: 59597 LRU
- Website Category: Lower Units
- Website Sub Category: Complete Lower Units
- UPC: N/A
- Shipping: $175.00
Mercury 20" Lower Unit 1.78:1 XR4 Mag2
Mercury 20" 1.78:1 XR4 Mag2 lower unit for 1988–1991 outboards, 135 150 175 200 HP. Inspected, serviced, and tested for proper function. Gears are replaced only if bad — good OEM gears are retained.
SPECS
| Gear ratio: 1.87:1 | Driveshaft length: 21-1/4″ |
| Driveshaft splines: 8 | Prop shaft splines: 15 |
Driveshaft length measured from the top of the water pump.
WHAT WE DID
| ❖ Opened and inspected under magnification ❖ Fully resealed | ❖ Pressure checked to 12 PSI ❖ New water pump impeller installed |
FITMENT
Mercury 20"
| Years | 1988–1991 |
| Shaft | 20" |
| Horsepower | 135 150 175 200 HP |
Verify by model and serial number before purchase to confirm this is the correct unit for your application.
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

