Serpentine Pulley Kits
for Perkins 4.107, 4.108 & Westerbeke 40 Engines

Slipping Belt Problem Solved
on your Perkins 4.107, 4.108 & Westerbeke 40

For Pricing Please Inquire Below

With more and more electronics being used on boats, the demand for more 12v DC amperage is increasing. If you are using a high output alternator on a Perkins 4.107, 4.108 or Westerbeke 40 with a standard belt, you already know the problem.

Trans Atlantic Diesels Inc. can supply an easy to fit serpentine pulley kit K6 (6 groove) for the Perkins 4.107, 4.108 and Westerbeke 40. With this kit you can achieve in excess of 150 amps 12 volts DC without the belt slipping (providing your alternator has the capacity).

Anyone who has tried to extract much more than 65 amps out of the original pulley and belt configuration, will know that black belt dust and squealing from the slippage are all too familiar. Over tightening the belt is not the answer as you will find out in the next paragraph.

• We recommend ordering a spare belt. Let us know which alternator you have to ensure we supply you with the correct size pulley, as these will vary between manufacturers. We cover the most commonly used sizes. (Balmar 60, 70 and 90 series and most common Delco)
• Your kit will include a new water pump with the serpentine pulley already installed
• For future reference, if you have a 4.107 or a Westerbeke 40, the part # for a replacement water pump using our serpentine pulley system will now be U5MW0054
• This is a standard 4.108 pump which is fully interchangeable but has a smaller diameter shaft than the 4.107 pump
• The part # for replacing a 4.108 pump is unchanged
• For our records and future guidance, let us know if you have a 4.107 a 4.108 or a Westerbeke 40