Allen-Bradley 16838A2 Rectifier Kit

The 16838A2 Rectifier Kit is an aftermarket replacement rectifier assembly for Mercury Quicksilver outboard engines in the 4.5–6 horsepower range, with related variants 16838A and 16838A4. The kit provides the rectifier unit plus mounting hardware to replace a failed original part in compatible engines, restoring the charging system’s ability to convert AC from the stator into DC for battery charging and for powering 12V lighting and instrumentation. Within the 16838A family, 16838A, 16838A2, and 16838A4 represent different configurations of the same rectifier assembly used on Mercury Mariner/Quicksilver motors in this power class. These kits are commonly listed as direct replacements for the engine’s OEM rectifier, designed to fit in the standard rectifier housing and connect to the stator and battery circuit as part of routine maintenance for 4.5–6 HP Mercury outboards. Installation is typically described in aftermarket listings as a straightforward swap for the original rectifier unit, aimed at restoring proper charging performance without modifications to the engine wiring.