Description:
PP-130-6547-03 Onan Heat Exchanger Assembly
The PP-130-6547-03 Heat Exchanger Assembly is a marine grade cooling component designed for Cummins Onan marine generator sets operating with a closed circuit (fresh water cooled) system.
This heat exchanger is responsible for transferring heat from the generator’s internal coolant circuit to the raw water cooling system. Engine coolant circulates through the internal tube bundle while seawater flows around the exterior shell, allowing excess heat to be efficiently expelled before the coolant is recirculated back through the engine.
By maintaining consistent operating temperatures, the heat exchanger protects critical generator components from overheating, supports stable electrical output under continuous load, and extends overall engine service life.
Manufactured to match OEM dimensions, mounting points, and flow characteristics, the 130-6547-03 is a direct fit replacement for the original Cummins Onan heat exchanger. It installs without modification to original hoses, brackets, or pipework, making it ideal for scheduled servicing, corrosion replacement, or preventative maintenance in harsh marine environments.
Suits Onan / Cummins Onan:
• Marine generator sets fitted with closed circuit (fresh water cooled) systems
• Onan MD / MDK / MDKB marine generator families (application dependent)
• Cummins Onan gensets using external shell and tube heat exchanger
Replaces / Cross Reference:
• Cummins Onan: 130-6547-03