Yanmar alternator upgrades
Yanmar 3JH4. 4JH4, 3HJ3, 4JH3, & 3GM30 Serpentine Conversion Kit
This serpentine pulley and belt conversion kit is designed to fit the
*Yanmar 3JH4, 4JH4 3JH3, 4JH3 & 3GM30 marine engines*, using our
"Aquamaax"line of Saddle Mount alternators 80amp thru 190amp.
Boat owners are now no longer limited to upgrading their old alternator
to a 100amp alternator on a single V pulley with this kit you can now
increase the output up to 190amps if required.
Electromaax's serpentine conversion kits are designed and manufactured
to replaces the conventional narrow single-V belt with a serpentine
10-rib belt, increasing performance and reducing vibration.
Yanmar Serpentine Conversion Kit Features:
- Wide serpentine 10-rib belt – Smooth (large improvement over
dual V-belt, including reduced harmonic vibration), better traction
for improved output and less tension required.
- Anodized 6061 machined aluminum parts, providing exact fit and tolerances
– corrosion prevention and lightweight.
- High grade steel (grade 8 and class 10.9) nuts, bolts, plated for
We fit most production boats
Beneteau 43 use a JH4 reverse mount with a large frame Delco
Beneteau 47 and Beneteau 50 alternator upgrade use a JH4-TE reverse
mount with a large frame Delco
Hanse yachts use an pulley kit
Hanse yachts with a YM30 use a pulley kit, or a YM30 second alternator
Jeanneau yachts tend to use a reverse mount to the Yanmar engine, but
can also use a pulley kit
Norsman 447 use a 4JH4-TE reverse kit
Lagoon and other cats use a forward facing kit
Email with your boat's details for more
*May fit other Yanmar engines Please contact
us For More Information
Need a well thought out economical three step regulator? Check out
the Electro Maax regulator here.
Want more amperage? Limited space? Check out our Yachtwork line of
second alternator kits here.
Tight on space? Can only fit one alternator but still want the big
amperage? Try one of our Electro Maax pulley kits here.