Comparing The Differences of a Berkeley 12JG vs Dominator 12S Jet Drive, Pump Comparison

Recently after refurbishing and rebuilding my Berkeley 12JG Jet Drive, I was removing the existing Dominator 12S from my boat to swap in the fresh Berkeley unit. While I had the two pumps out of the boat I took the opportunity to film a quick video outlining the differences that I am aware of between these two pumps.
In short the Dominator pump is a newer, updated version of the Berkeley pump. A lot of the parts are interchangeable between the two pumps. Dimensionally they are nearly the same, with the exception of the bowl diameter on the Dominator unit, which is larger than the Berkeley. In regards to my Dominator pump, someone at some point in its life has turned down the OD of the bowl to match the diameter of the Berkeley pump, allowing it to be fully interchangeable with the transom cover.
If you know of other differences in the two pumps please let me know in the comments section below!
Thank you for watching...
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About AutoTechNick:
Growing up in rural Oregon I was always around Hot Rods & Race Cars. I imagine my early exposure to this culture ignited a spark of interest in cars, which remains my passion to this day.
🎓 I am a proud Alumni of Wyoming Technical Institute, where I studied Automotive Technology, Performance Engine Building & Street Rod Fabrication. In addition to “Wyo Tech”, I graduated from the BMW Service Technician Education Program. More commonly known as BMW S.T.E.P.
🏎️ I spent nearly 10 years working in various BMW dealerships as a Master Technician. After a move back home to the PNW I found myself no longer servicing German-made machines, but now working with Italians. I spent nearly another 10 years as a Ferrari Master Technician, & Shop Foreman at a local Ferrari dealership.
🏆 I was selected by Ferrari as one of 12 technicians worldwide to compete in the “Ferrari Testa Rossa Awards”, consecutively for 4 years in a row. Finishing in 3rd place in 2016, & in 2019 I was able to place in 1st. Winning the competition & earning the title of the Top Ferrari Technician in the world!
🚀 As my time with Ferrari came to an end, a new career path awaited me…. Aerospace. I am currently working at Blue Origin, helping to build & develop the BE-3PM and BE-U rocket engines.
With my new career path, I needed an outlet for my automotive passion, thus the reason for this channel…
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