Ignitions and Electrical› Charging Systems

ARCO MARINE

REPLACES:SIERRA 186855 VOLVO PENTA 8731200 BATTERY ISOLATOR

$136.52

SKU: A09I BI-0702

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

Easy — 1–2 hours

Description

The ARCO Marine BI-0702 is a battery isolator designed for marine applications. This solid-state device allows electrical current to flow in one direction, enabling an alternator to be connected directly to two batteries without fear of discharge between them. Both batteries are charged automatically and proportionally to their needs when the engine is running.

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 BI-0702

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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