- Brand: Mercury
- Size: 200 225 250 HP 3.0 L
- Color: Black
- Style: XL - 2-Stroke - V6 - Optimax
- Condition: Used
- Notes: 1 YEAR WARRANTY!
- SKU: 35549 LRU
- Manufacturer Part Number: 1600-880687-C01
- Country of Manufacture: United States
- Motor & Engine Type: Mercury
- Part Type: Motors, Engines & Components
- Other Part Number: 1600-880687
- Surface Finish: Painted, Black
- Inventory Number: 35549 LRU
- Website Category: Lower Units
- Website Sub Category: Complete Lower Units
- UPC: N/A
- Shipping: $75.00
1600-880687-C01 Mercury Up 25" Lower Unit DFI Optimax
1600-880687-C01 Mercury Up 25" DFI Optimax lower unit for 1999 & Up outboards, 200 HP. Inspected, serviced, and tested for proper function. Gears are replaced only if bad — good OEM gears are retained. Please note: There is minor pitting on the splines of the driveshaft, but this still has plenty of life in it. Please note that this does not come with the trim tab, propeller, or propeller hardware. There are scuffs and scratches in the paint, but nothing that isn't cosmetic.
SPECS
| Driveshaft length: 26-1/2″ | |
| Driveshaft splines: 13 | Prop shaft splines: 15 |
Driveshaft length measured from the top of the water pump.
WHAT WE DID
| ❖ Pressure checked to 12 PSI ❖ New water pump impeller installed ❖ Driveshaft and prop shaft checked straight | ❖ Professionally cleaned ❖ Opened and inspected |
FITMENT
1600-880687-C01 Mercury Up 25"
| Years | 1999 & Up |
| Shaft | 25" |
| Horsepower | 200 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

