• Offered is our replacement for the 36903 Westerbeke Generator Heat Exchanger. 
• This offer includes the heat exchanger, end caps with gaskets and zinc.  
• This part is made with OEM equivalent materials and is guaranteed for fit and function.

 Some details to note:   

• The 36903 and 35135 are very close to each other in configuration.  It would be wise to make sure you are choosing the correct part. 
• This is a link to the 35135
• For us, the 36903and 36903CN are the same part, both with a Copper Nickel bundle.
• 36903
  • Seawater fittins are 7/8" and 3/4".
• 35135
  • Seawater fittings are two 7/8" hose fittings. 

Our product is a drop in replacement for these part numbers:

• Westerbeke 
  • 36903
  • 36903CN
• Sendure
  • 11210-1-7

This part fits the following engines (possibly more):

• Universal / Westerbeke

  • 35B Three

  • 38B Four

  • 42B Four