Hi Lexowgrant
I have installed the HE on my Cal 48 Perkins. It fit perfectly and keeps the engine down about 15 degs cooler. Heading to Mexico next week so will give it a good workout. Many thanks
Mark

I still have not installed it yet but will soon.
I will report back as to how it works
Thanks

Hi Wainui Did that larger diameter perkins 4108 heat exchanger work for you? were the connections the same. lexowgrant and @ and hotmail. and com