Replacement Engines

As an authorized Yanmar, Kubota and Westerbeke (below) engine replacement dealer, we are able to provide you with a drop in solution to meet your needs. You may select to just replace your existing engine with the appropriate model to meet your needs, or have it leave our facility with our 94amp High Output Alternator Replacement installed. In adddition, this is the perfect opportunity to have a Second (dual) ZRD 220 amp High Output Alterntor professional preinstalled on your replacement engine befor it arrives. Once you engine is delivered to your boat's location, all you need do is have your local mechanic (or possibly yourself) install it in your vessel. Worldwide delivery is available. We make it seemless and handle all of the necessary requirements for packaging, export, import, and documentation.

Contact ZRD for a full discussion and evaluation for which Manufacturer / model will be correct for your needs and vessel installation requirements. To aid in your selection, below are some Yanmar specifications for your analysis. Other higher output engine specifications are available upon request.

Yanmar Logo

Yanmar Current, Most common, in Production Engine Specifications
      •   3YM30 30hp (22.1kW) / 3600 rpm
      •   4JH4AE 54hp (39.6kW) / 3000 rpm
      •   4JH4E 55hp (40.5kW) / 3000 rpm
      •   4JH4-TE 75hp (55.2kW) / 3200 rpm
      •   4JH4-HTE 110hp (80.9kW) / 3200 rpm
      •   4JH5E 53hp (39.6kW) / 3000 rpm
      *   List of Current Yanmar engines

Older Engine Manuals with Specifications
      •   3YM30
      •   4JH3TE, HTE, DTE 76/100/125hp / 3800 rpm

Manuals for other models are available - Email us if your desired Model is not shown above.


Complete Engine Replacement Ready for Export





The rest of the power train     The rest of the power train

Do not forget the rest of the power train.

Above is a Yanmar 4JH4-TE (75HP). It is ready for shipment to Australia. Attached is a pre-installed High Output Alternator TSP (Dual Alternator total system package). It consists of a ZRD ZCW3E1210 (94 amps) High Output replacement alternator, ZCCJE1222 (220 amps) High Output Second (Dual) Alternator, Engine Attachment Platform, and associated Electronics and Hardware.

Note: The Second (Dual) High Output Alternator extends only 6" forward of the PTO pulley and fits within the width of the motor mount footprint.



Kubota Logo

Kubuta Engine Replacement


Kubuta Engine Replacement


Above are two versions of Kubota engines designed as replacements.




Westerbeke Logo

Westerbeke Engine Replacement Westerbeke 44A before custom modifications performed Westerbeke 44A with custom double 3-8" pulleys, ZRD 120 amp alternator and adjustment arm


35E Three 28hp - Overview & Specifications
44C Four 38hp - Overview & Specifications
55D Four 48hp - Overview & Specifications
65A Four 68hp - Overview & Specifications

Wiring Diagrams
 Above are two pictures (before and after) of a Westerbeke 44A where a customer took advantage of ZRD's expertise to install a custom built externally regulated ZRD 120amp alternator using a ZRD custom designed (crafted) adjustment arm for tensioning. It is driven by dual 3/8" belts and pulleys. The before photo shows the Westerbeke original installed, standard 50 amp, internally regulated alternator. A close look at the after photo will reveal that the engine PTO also has two additional 1/2" sheaves available for future expansion to drive an additional engine driven accessory such as a ZRD Second (dual) High Output Alternator or a hydraulic pump. Increased output and unique problem solving solutions are what customers expect and receive from ZRD on a daily basis.




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