OEM Volvo Penta 5.0L GXi-E Vortec Cylinder Head Assembly GM 12558059
OEM GM Vortec cast-iron cylinder head removed from a Volvo Penta 5.0L GXi-E marine engine. The head is marked with casting number 12558059 and is configured for GM-based 5.0L / 305 CID V8 marine applications.
This is a complete used cylinder head assembly with the eight valves, valve springs, retainers, and rocker studs still installed as pictured. It uses the 8-bolt Vortec-style intake mounting pattern.
The cylinder head has not been pressure-tested, magnafluxed, or professionally inspected for cracks. Buyer should verify casting number, engine application, and required machining before installation.
Highlights
- OEM GM / Volvo Penta Marine Cylinder Head
- Removed from Volvo Penta 5.0L GXi-E
- Casting Number: 12558059
- GM 5.0L / 305 CID V8 Application
- Vortec-Style Cylinder Head
- 8-Bolt Vortec Intake Pattern
- Cast-Iron Construction
- Eight Valves Installed
- Valve Springs & Retainers Included
- Rocker Studs Included
- Complete Assembly as Pictured
- Sold Exactly as Shown
Condition
Used OEM take-off condition with surface oxidation, carbon buildup, staining, gasket residue, and normal wear consistent with previous marine-engine use.
The cylinder head has not been pressure-tested or magnafluxed, and no guarantee is made regarding internal condition. Inspection and/or machining is recommended prior to installation.
Please review all photos carefully for exact condition and included components.
Specifications
Brand: GM / Volvo Penta
Part Type: Cylinder Head Assembly
Casting Number: 12558059
Donor Engine: Volvo Penta 5.0L GXi-E
Engine Family: GM Small-Block V8
Displacement: 5.0L / 305 CID
Configuration: Vortec
Intake Pattern: 8-Bolt Vortec Style
Material: Cast Iron
Valves: 8
Condition: Used OEM Take-Off
Buyer is responsible for verifying casting number, engine serial number, fitment, and required machining before purchase.
Dealer Sale – Sunset Marine TX LLC
SKU: 10811











