Arco 120 Amp 3 Bank Battery Isolator | BI-1203

• 120 Amp 3 Bank Battery Isolator
• Single alternator post
• Three battery posts
• Battery isolators allow electrical current to flow in one direction only
• Rated for use with 10 to 350 amp alternators on 12, 24, or 32 volt negative ground systems
• Not to be used on 12 volt charging systems with 24 volt trolling motors

Additional Information 

Established in 1960, ARCO has 60 years of manufacturing experience with a focus on building the most reliable products. ARCO has been an industry leader in marine electrical parts since pioneering the expansion of newly manufactured marine engine parts over 40 years ago.

The company takes pride in its ability to manufacture in America to the highest standards of quality control and testing.

Proven dependability makes ARCO the trusted source for OEM quality or better alternators, inboard starters, outboard starters, and tilt/trim motors. Nearly 60 years ago, ARCO set the gold standard for marine engine parts. ARCO consistently tests and retests every unit manufactured beyond normal operating conditions. That’s how ARCO delivers the highest quality, most reliable parts available.

ARCO began with a superior commitment to dependable starting and charging products. They then developed the best technical support available in the industry. ARCO ensures the highest quality by following five key principles.

Proudly Based in the USA

In fact, ARCO product manufacturing, quality testing, warehousing, and fulfillment take place right here in good old U.S. of A. - not many of our competitors can say that.

OEMs Rely on ARCO Products

ARCO's products are manufactured and precision tested on-site, before they ever leave the facility. This ensures that every product that carries the ARCO label will perform at or above OEM specifications.

Products are 5x More Reliable

ARCO is proud that their marine engine products are engineered and manufactured with precision quality, therefore making them the most dependable in the industry. ARCO products deliver long term value.

Industry's Best Warranty

The most dependable marine engine parts are now backed by the industry's best warranty! Also, the new ARCO Assurance warranty program protects you, covering parts and labor on warranted products.