OEM Mercury MerCruiser 5.7L Vortec Cylinder Head 12558059 GM 350 MPI Marine 5.0L V8
Genuine OEM GM Vortec cast iron cylinder head, casting number 12558059, removed from a freshwater Mercury MerCruiser 5.0L MPI engine. This OEM Vortec cylinder head is commonly used on GM-based 5.0L (305 CID) and 5.7L (350 CID) MerCruiser MPI and carbureted marine engines utilizing Vortec cylinder heads.
The head features the 8-bolt Vortec intake manifold design and includes the factory-installed valves, valve springs, retainers, and keepers exactly as shown. The casting appears complete with no visible cracks, broken mounting ears, or other obvious external damage.
Removed from a freshwater engine and sold exactly as pictured. As with any used cylinder head, professional inspection, pressure testing, and resurfacing are recommended before installation. Please verify compatibility using the casting number and your engine serial number prior to purchasing.
Features & Highlights:
- Genuine OEM GM / Mercury MerCruiser Component
- Vortec Cast Iron Cylinder Head
- Casting Number 12558059
- Fits GM-Based 5.0L & 5.7L Marine Engines
- 8-Bolt Vortec Intake Manifold Design
- Factory Valves, Springs, Retainers & Keepers Included
- Freshwater Take-Off
- No Visible Cracks or Broken Mounting Ears
- Excellent Replacement or Rebuild Core
- Sold Exactly As Pictured
Condition Details:
This is a used OEM cylinder head removed from a freshwater engine. It shows normal signs of previous marine use including carbon deposits, light surface rust, gasket residue, and cosmetic wear. The head has not been disassembled, cleaned, pressure tested, or machined after removal. Buyers should inspect, pressure test, and resurface as needed before installation. Please review all photos carefully and verify compatibility with your engine serial number before purchasing.
Dealer Sale – Sunset Marine TX LLC
SKU: 10511