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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Unfortunately, I am now experiencing the displeasure of ordering and receiving the incorrect item 2x. I ordered the HU816Z and ended up getting the HU816X Which is NOT what I'm looking for as it DOES NOT come with a drain plug, which you need to replace each oil change as it's a plastic disposable piece. you are running a terrible risk of reusing a plastic piece. If they can guarantee you are getting what you actually ordered that would be great, but you can't. Really disappointed to see this is now a common thing for something that should be easy as pie to complete. Amazon needs to take a closer look into this! When I originally ordered this this was my first review: "Don't waste time with anything else, this is super easy, replace all the seals, filter and plug in one go. No brainer if you have an F30 328i."

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Reviewed in the United States on May 19, 2024

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Jeronimo Barreto

Pawtucket, US

★★★★★ 5

Originales

Exelente

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Reviewed in the United States on March 6, 2026

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Jeffrey Lee boldridge sr.

Port Orchard, US

★★★★★ 5

PERFECT FIT!!!

perfect fit installed easily had all associated parts needed for filter change ie. o-rings and a new plug to boot, great price and fast ship, will purchase again and again

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Reviewed in the United States on August 26, 2024

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Trusted Review

Grantham, US

★★★★★ 4

They send the X kit not the Z

took away 1 star due to getting the X kit and not the Z. The filter is the same and works fine, the difference is the X kit includes a metal washer for the oil drain plug and the Z kit includes a new plastic drain plug so depends on your model. I have a 2015 4 series and the filter is great and works great, been using them for 5 years but I also buy packs of the oil drain plugs since they never come included

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Reviewed in the United States on February 11, 2025

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Team Unified

Omaha, US

★★★★★ 5

awesome

Excellent Exactly for n20 2014 x1

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Reviewed in the United States on November 22, 2025