EG4 FlexBOSS21 16kw AC Hybrid Inverter | 48V Split Phase | 21kW PV Input

EG4 FlexBOSS21 16kw AC Hybrid Inverter | 48V Split Phase | 21kW PV Input

Marsoni

M251S

$1775.00

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

EG4 FlexBOSS21 16kw AC Hybrid Inverter | 48V Split Phase | 21kW PV InputEG4 FlexBOSS21 Hybrid Inverter 48V Split Phase 21kW PV Input Versatile and Powerful Hybrid Inverter The EG4 FlexBOSS21 is a versatile 48V split phase, hybrid inverter charger that offers the same dependable power as the 18kPV with enhanced flexibility. Powerful enough to start a 5 ton AC unit, the FlexBOSS21 supports 21kW of PV input. Capable of paralleling up to 10 units together, the FlexBOSS21 has an impressive total output of 160kW. Three MPPTs

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For my 2016 Hyundai Sonata Hybrid Limited. I cannot believe I paid so much more for a brand-name filter that does the same thing as this one. It is made of the same material as the dealer one I took out. Very easy to install, cant believe I paid for this to be done in the past with oil changes. Requires no tools and did not get dirty at all. No mechanical skills needed, especially if you run into trouble and can use YouTube. PROS - great quality, cannot tell that it is after-market - very professionally made, not irregularities seen - excellent fit in position, no adjustment needed - very easy to install, cannot believe I paid to have this done in the past - no mechanical skills needed to install - great price compared to what big name productions want for the same thing - cannot tell the difference in air quality between this and the dealer filter I took out - removes outside odor completely - did not require tools are getting dirty CONS - None

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Reviewed in the United States on May 30, 2026

Verified Purchase

JimXeod

Chelsea, US

★★★★★ 5

Fits perfect and works as designed. Flows like OEM and looks well made.

Style: BE-553B 1-Pack

This filter is very comparable to the stock filter. Fits the BMW G20 just like OEM. I would not say it is two times "heavier" as advertised on the box, but it is very comparable to stock. It's the same weight and similar construction. BMW has a very robust cabin filter. This will be my go to. I did purchase another aftermarket cabin filter that fit well, but was thin, flimsy and had a bad chemical odor. This one is fine and airflow is the same as OEM. I change them every year or so. I don't worry too much about longevity with cabin filters personally.

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Reviewed in the United States on May 15, 2026

Verified Purchase

S. Phillips

Grantham, US

★★★★★ 4

Good quality but it was slightly longer than original and needed modification.

Style: BE-182 1-Pack

Bought this cabin filter for a 2023 Acura TLX. While the filter seems to be made of quality material, it was just a little too long (about a 1/16 of an inch, so I had to trim it to make it fit so the cover would fit snug. I was able to do that without compromising the filter itself. But this might be an issue for some people

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Reviewed in the United States on May 8, 2026

Verified Purchase

Keith Granholm

Dallas, US

★★★★★ 5

Fits my Chevy 2021 Bolt Premier perfectly.

Style: BE-966 1-Pack

Installation was a breeze, fir nicely and the air in teh car now smells fresh and clean. The old filter has developed a musty smell so this new one is great. Had it replaced in under 3 minutes.

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Reviewed in the United States on May 18, 2026

Verified Purchase

Punkizback

Louisville, US

★★★★★ 5

Fits perfectly for my 2017 VW Passat

Style: BE-373 1-Pack, Style: BE-373 1-Pack

Bought this for a fraction of the cost. An auto shop wanted to charge me $72.99 for a filter so I bought this Spearhead brand cabin filter and its the perfect size and its just as sturdy as the previous one the dealership had in the car. Not sure yet how the airflow is or if anything different as I have not driven in the car since it was replaced, but it appears to be a very high quality cabin filter for my car at a great price.

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Reviewed in the United States on May 25, 2026