• Offered is our replacement for the 97434 Crusader Heat Exchanger for the GM Big Block engine designed for the Early model Crusaders.   This offer includes the heat exchanger, end caps with gaskets and zinc.  
• This part is made with OEM equivalent materials and is guaranteed for fit and function.

 Some details to note:   

• Cooling tank (Bottom) is 5 inch Diameter x 19 inches long

• There is a 3 pass and a 4 pass version.   We sell the 4 pass version.   The heat exchanger was originally designed as a 3 pass unit but we've found that the 4 pass unit (the number of times seawater passes through the unit) provides better cooling by increasing the efficiency of the heat exchanger.  This means that the seawater exits the heat exchanger from the opposite end of the original OEM unit.  The seawater hoses that go from the "T" on the heat exchanger to the starboard and port risers will have to be switched.  It's a pretty simple change. 

•  The bracket support is much the same as the OEM version and mounts flawlessly.

• This is a rear mount (over the transmission) heat exchanger.  

• used on Big Block engines up to 1985.

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

• Crusader 97434
• Sendure  9365-1-5
• Sendure  2028-4-5

 Engines that this part goes on:  

• 7.4L GM Big Block Crusader
• It is best to confirm the configuration through pictures and diagrams while ordering.    If you have any questions at all please call us.