- Brand: Mercury
- Size: 135 150 175 HP
- Style: V6 - DFI - 2.5L
- Condition: Used
- SKU: 43960 PWH
- Manufacturer Part Number: 879808T07 879808T01
- Country of Manufacture: United States
- Motor & Engine Type: Mercury
- Part Type: Motors, Engines & Components
- Surface Finish: N/A
- Inventory Number: 43960 PWH
- Website Category: Powerhead
- Website Sub Category: Complete Powerheads
- UPC: N/A
- Shipping: $300.00
Part Number
Also Replaces
◆ 879808T01
Condition
- ◆Complete OptiMax DFI powerhead, removed from a 2003 135 HP freshwater engine.
- ◆Compression read inconsistent and slightly low; on inspection the cylinder walls showed no scoring, so we'd suggest a fresh set of rings. (Low, even readings are common on motors that sat in storage — an hour of run time often reseats the rings.)
- ◆Sold with no returns — see the photos.
Fitment
- ◆Mercury OptiMax 135, 150 & 175 HP, 2.5L V6 DFI — 2003-2011.
Donor: 2003 135 HP
We’ve cross-referenced fitment with the resources available to us; it may not cover every model in the years and horsepowers listed. Verify the part number or your engine serial before purchasing — we’re glad to help.
Our Guarantee
While we do not accept returns on this part, we promise to do our very best to describe and photograph it accurately and to be straight with you about its condition. If something doesn’t sit right after it arrives, send us a message — a real person on this end will help make it right.
Disclaimer
We use various web resources to cross-reference and describe our parts. These are not always 100% accurate but they are accurate to the best of our knowledge. Verify by model or serial number that you’re getting what you need.

