14129 Westerbeke Heat Exchanger. 14129 and 14129CN are the same part, both with a Copper Nickel bundle. Equivalent to 11966 Westerbeke Heat Exchanger 1380-1-5 or 1380-1-7 Sendure 1279-1-5 Sendure Engines: Westerbeke 40 1975 Also fits Perkins 4-107 and 4-108 W40 or W-40
This part has two configurations sold as the 14129CN and 14129-14CN. Take a look at the pictures to assure you're purchasing the right one. Both are approximately 14 inches long, but the hose configurations are quite different. They assuredly are NOT interchangeable. Read Less