Ignitions and Electrical› Starters

ARCO MARINE

MERCURY SOLENOIDISOLATED BASE 12V REPLACES SIERRA 185836

$51.30

SKU: A09I SW661

In Stock
In Stock
Ships by Jun 15
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The ARCO Marine SW661 is a 12-volt solenoid designed for Mercruiser and Mercury marine applications. It features an isolated base and replaces Mercury part numbers 25661, 25661-1, and 25661-T1.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

Available on iOS & Android

Specifications

BrandARCO MARINE
Part NumberA09I SW661

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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