Ignitions and Electrical› Charging Systems

SIERRAMARINE

REGULATOR/RECTIFIER

$335.98

SKU: S08C 18-99424

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Sierra 18-99424 is a high-quality aftermarket voltage regulator/rectifier designed as a replacement for OMC part number 583266. This critical charging system component regulates voltage output from the stator to maintain proper battery charging and protect electrical components on Johnson and Evinrude outboard motors. It features a 35-amp output capacity for reliable charging performance and durable construction designed to withstand harsh marine environments. It is a direct replacement for V6 and V8 Johnson/Evinrude outboard engines.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandSIERRAMARINE
Part NumberS08C 18-99424

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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