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 cylinder boring, valve seat re-cutting, seal replacement, valve adjustment, and professional repainting. All powerheads, long blocks, and short blocks include gaskets and come with a limited one-year warranty, with optional extended coverage available. Additionally, there’s no additional core charge—return your old part for inspection, and you may be eligible to receive a refund if it passes inspection.