Northern Lights John Deere 55KW Generator Heat Exchanger This is a drop in replacement for Northern Lights Generator with the John Deere engine. After your purchase, we supply you a ship tag to ship your part to us. We remove and reuse the casting from your old part and place it on a completely new assembly and scrap out your old part. From the day of arrival it takes 3 business days to complete. Your new part is shipped to you ready for a drop in installation. All fitting sizes and locations are equivalent to the OEM part. Engine Info: TD4276T174563, 4276TF001, 04FD174563