Mercury & Mariner 4-Stroke Outboard Short Blocks & Cylinder Heads

Our Mercury & Mariner 4‑Stroke Outboard Short Blocks & Cylinder Heads are professionally remanufactured to restore your outboard to peak performance. Each short block and cylinder head is refurbished to stringent standards—this includes valve seat re-cutting, seal replacement, valve adjustment, and professional repainting. All units include gaskets and come with a limited one‑year warranty, with optional extended coverage. Plus, there’s no additional core charge—return your old part for inspection, and you could earn a refund (e.g., up to $100) if it passes inspection.