Boat Engine Oil Coolers Transmisson Oil Cooler GK 4" & 2''

Alfa Engine Oil Coolers are suitable for cooling torque converter, automatic transmission and engine oils. Being water-cooled they have the advantage of freedom from accidental damage and also encourage quicker warming up of the oil. Our Engine Oil Coolers adopts thread pipe design, the contact area is larger. The integrated design can avoid the trouble of water and oil mixing. Its material is all stainless steel welded, so it has stronger corrosion resistance. Furthermore, the stainless steel 316L coolers suitable for low-temperature seawater environments(temperature below 15 degrees C).


  1. Materials(3 Types): Stainless Steel 304, Stainless Steel 316L, Titanium
    304 is suitable for freshwater, clean water and river water.
    316 is suitable for low-temperature seawater, salt lake water.
    Titanium is suitable for high-temperature and low-temperature seawater.
  2. Max Working Pressure on Oil Side: 2.5MPa(360PSI)
  3. Max Working Pressure on Water Side: 1.5MPa(218PSI)
  4. Design Temperature: 150 degrees C
  5. Cooling Water Connector: 100mm/4'' BSPT
  6. Engine Oil Connector: 2'' BSPT

Water port connector selection table

Type In line (axially) Right angled
EC 32mm 50mm 32mm 40mm
FC 40mm 50mm 40mm 50mm
FG 40mm 50mm
GL 3" 70mm

*Customization Service

Mounting brackets are available.

We produce customized applications on different working pressure and temperature.
The more customized designs with floating tube stack, removable head caps, head tank, kettle tube are your options.

Limited Warranty of Heat Exchanger.pdf