Hi All,
I just re-conditioned the heat exchanger on my 1999 Catalina MK II. The engine is a Westerbeke M35BC but unfortunately, the original end cap gaskets, though still serviceable, really need to be replaced. Does anyone know where I might find these. They're 3" diameter and for an unknown reason (for me) different colors. They are also molded with chamber separating embossments (see photos).
Let me know, and thanks. :)


I just did that. Visit here
http://mei1970.org/saillavie/Heat%20Exchanger
new caps and gasket from 3rd party is available and comes with 3/8" stainless steel screw, I used the original bronz screw. The new gasket does not need the "O" ring.
Sail La Vie 1999 Catalina 36 MKII, M35B-17031, Coyote Point, San Mateo, CA
About Sail La Vie
https://hansenmarine.com
Is another good source for Universal/Westerbeke parts.
Paul & Wendy Keyser
"First Light"
Rye NH
2005 C36 MKII #2257
Wing, M35B
Catalina Direct is another source.
David S. Power
Two If By Sea #1687
Burnt Store Marina
Punta Gorda, FL
I use Hansen Marine in Marblehead Ma. They are great
I got one for my heat exchanger here:
https://discountmarinesource.com/store/index.php?route=product/product&p...
The o-ring goes inside. This is important as mine was outside and the cap dezincified because it was not protected by the engine zinc, which is why I needed a new one.
Ron St. Onge
1995 Catalina 36 MKII Hull 1384