is the world's leader in forward or reverse facing large frame
alternator mounts that direct couple to Yanmar engines.
Our Yachtwork kits arrive standard with a double
groove, 1/2" V belt power power pulley, for ease of maintenance,
compatibility, world wide simple replacement, and reduced side
Serpentine belts increase crankshaft side load and
are generally not used by Yanmar, but available on request. See
note at end of page.
All Yachtwork mounts accept the J180 standard alternator.
The J180 is the worlds most popular alternator mount and in use
on every type of heavy equipment, large engine, road truck, and
even the 95
series Balmar 210 amp alternator. To you this means an inexpensive
alternator is available ANYWHERE in the world.
All our mounts are made from steel. Steel is
used by EVERY major engine manufacturer to build
alternator mounts for two reasons-
- Steel has vibration resistance that provide years of trouble
- Steel matches the engine’s galvanic voltage potential,
thus preventing rust. Have you ever noticed how stainless steel
makes steel rust? That is because they are disimiler metals
and should not be mixed in a marine enviorment.
Our kits have been proven in the field for over
We produce brackets for most boat types including Catamarans,
Beneteau, engines under stairs, or wherever you have extra space.
Our marine alternator kits fit the Beneteau series of yachts
and were built specifically fit the new Oceanis 43, 46
We sell mounts that couple the new 4JH4 Yanmar to the 165
amp, Delco large frame, or the Balmar marine alternator.
We designed this elegent mount for Yanmar New Zealand. It
fits the Beneteau
43 perfectly. It is now one of our best
selling mounts producing a combined steady 245 amps to charge
marine marine batteries. We even just built one for the
CEO of Team New Zealand.
for more details and price
Our customers rave about this high quality product. It
ends the issue of charging marine batteries
"I would recommend the system to every Beneteau cruiser
over other charging systems. I love it...
We use all the power we want including a 600w inverter for laptops,
battery drill, camera etc and have never been below 700amps in
No doubt your kit was one of our best
investments and the price was perfect at the time. Your kit and
instructions were incredible..."
CEO Team New Zealand and Beneteau 43 owner
here for more details and price
Why so much power?
With today's high electrical usage in yachts, the ability to
fast charge is now more important than ever. Many yachts have
over a 600 amp hour battery capacity with 1200 amp hour not being
uncommon. To charge a system that large the old single 80 amp
marine alternator (that really puts out 70 amps) can take hours
The Dual Alternator option is the simple solution for the long
range yacht. You recieve two direct advantages with separate marine
Charging time may be reduced by more than 80%.
Second, and maybe more important is the security in knowing
if an alternator fails while underway you simply turn it off
and ignore the problem. Meanwhile the seconded alternator
keeps merrily charging the boats electrical system.
For example, I know of many boats that have overheated a single
alternator while underway only to have the marine batteries slowly
go dead, with the engine still running. The wind came up but the
crew could not shut down the engine as they would not be able
to restart with dead marine batteries. They were sailing at night
making decisions weather to run the radar or the running lights.
If they had had a dual alternator system they would have simply
noticed the problem, noted it in the log and dealt with it at
- Customer base for our high amperage kits include:
- -Offshore cruising yachts
-Charter yachts such as the Moorings fleet
-Beneteau production yachts
-Marine electricians wishing for an easy method of driving a
large frame alternator.
-Yachts with moderate electrical loads that do not wish to dedicate
space, effort and spares to a genset.
-Large amp hour battery banks
-Yachts that wish to shut down the genset while using the main
-marine batteries such as AGM that can take high charge rates
-Split voltage charge systems IE 12/24 volt electrical systems
-Yachts with large inverter loads ie. washer/dryer
-Yachts that wish for a back up charge system for safety
-Yachts that wish to utilize short engine run times to quickly
recharge marine batteries such as cruising boats that only run
the engine when lifting anchor.
-Yachts with large electrically driven motors such as electric
bow thrusters and electric anchor winches
here for more details and price
Remember- Well charged marine batteries keep your marine starer
spinning like it should.
4JH4 145 amps
Our precision mount
Yanmar LH alternator mount