Description:
PP-JT4150 Johnson & Towers Heat Exchanger
This Seakamp Heat Exchanger is a marine-grade replacement designed for Johnson & Towers marinised industrial diesel engines.
This unit forms the core of the engine's closed-circuit cooling system, transferring heat from the engine's fresh-water coolant loop to the raw-water (seawater) circuit. Engine coolant flows through the internal tube bundle while seawater circulates around the outer shell, efficiently carrying heat away before the coolant is recirculated through the engine.
Effective coolant temperature control is critical for stable engine operation under load. A correctly functioning heat exchanger helps prevent overheating, protects cylinder heads, liners and gaskets, and supports consistent power output and long service life in demanding marine environments.
Manufactured to match OEM dimensions, port orientation and mounting geometry, the JT4150 is a true direct-fit replacement for the original Johnson & Towers component. It installs without modification to existing hoses, brackets or pipework, making it suitable for planned maintenance, corrosion replacement or preventative servicing.
Suits Johnson & Towers:
• Johnson & Towers marine engines fitted with the OEM heat exchanger this Seakamp unit replaces
Replaces / Interchangeable With:
• Johnson & Towers: JT4150
• JT4150CN (CuNi variant of same part)