• Offered is our replacement for the 130-7489-02 Cummins Onan Heat Exchanger.   This offer includes the heat exchanger, end caps with gaskets and zinc and a ground stud for you to connect to the grounding system on your boat. 
• This part is made with OEM equivalent materials and is guaranteed for fit and function.

 Some details to note:   

• If you look at the second picture in this group you will find there are two models that are close to each other but with two important differences.  130-7489-03 has a sensor port and a straight Seawater fitting.  130-6547-02 has two bunny eared fittings and does not have a sensor port.

• Model information below:
  • Spec Builds are a level of build which changes as the generator models age.   Spec A would be an earlier version than spec B as an example, and that earlier than spec C.    
  • See the model numbers or pictures to match up what part you have on your generator. Trust the pictures we have on the site more than the model numbers. We've seen examples of data from operation manuals that didn't exactly match what the customers had for parts. 

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

• Cummins Onan 130-7489-02 
• Cummins Onan 130-7489-03

This part fits the following models (possibly more):

• MDKD Series
  • mdkdk
  • mdkdl
  • mdkdm
  • mdkdn