New Mercury & Mariner Outboard Side-Mount Control Boxes 

This page showcases ObParts’ full lineup of OEM and aftermarket side‑mount control boxes and components for Mercury and Mariner outboard engines. Browse genuine OEM assemblies featuring integrated trim switches and harnesses, perfectly engineered for quick replacement. Designed for dependable throttle and shift performance, each control box provides a direct fit that meets OEM specifications—whether it's Mercury’s 8‑pin or 14‑pin models, our control assemblies are compatible with 9.9‑250 HP 4‑stroke engines.