REDARC Smart Start SBI Battery Isolator - 12V 100A

REDARC Smart Start SBI Battery Isolator - 12V 100A

Marsoni

M251S

$165.00

Get it in 3 business days with 1 day shipping. Friday, May 29

REDARC Smart Start SBI Battery Isolator - 12V 100AThe REDARC Smart Start SBI12 is a microprocessor controlled battery isolator which protects the start battery from excessive discharge, while allowing the auxiliary battery to supply charge to non essential loads. It is used as a solenoid priority system in dual battery systems and provides 12V DC incorporating 100A of continuous ratings. The SBI range manages battery charge for your secondary battery while on the move. The battery isolator is mostly

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Just installed in a 2006 4Runner. Can’t speak to exact filter partials or longevity, but what I can’t say is that it fits very well and looks to be made very well. It actually fits better than the Bosh filters I normally use. Has a nice foam seal around all 4 edges and fits in the tray perfectly. Seem to be a nice option. So if you have a 03-09 4Runner it’s going to work well. Here’s some pictures of this filter (the blue one) next to a Bosh filter I removed. Also a picture with it in the factory tray.

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Reviewed in the United States on March 1, 2026