Brenso - Complex Oscillator

Marsoni

M251S

$319.50

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

Brenso - Complex Oscillatorbrenso brenso adj. [slang portmanteau word created from the Italian adjectives breve short and intenso intense, probably around the early 2000s in the area of Bologna; pronounced with the long, closed e instead of the expected open , as typical of the Northern Italian regions] This adjective may have originally referred to events or experiences that were particularly powerful despite their short duration. Soon its meaning broadened, indicating

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2nd time purchasing this item. The 1st one lasted 2 years, but my boat hasn't been used a lot either. The marine mechanic who replaced it for me said it was definitely time to replace it. He said it fits and works just fine. Has good water flow. As for quality and value, I'd say decent. The price is better than an OMC OEM pump. I plan on using my boat more this year, so we'll see how it holds up. I'll get it replaced at the end of the year. Ease of installation, NOT EASY. The lower unit has to be completely removed from the outboard. Some outboard are easier than others and as old as this one is, it's probably easier than some of the newer ones. I've watched a couple of videos on YouTube on how to do it and I might try to do it myself next time. It cost $360 to have it done and that's with me supplying the pump. He said it took him about 1½hours to do the job, but I was charged for 3 hours labor. Probably what the book shows. I'd buy it again and I'll try to do the job myself.

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Reviewed in the United States on March 18, 2026