from this site: http://www.importscene.com.au/prod542.htm
HKS Universal Oil Cooler - Type S
UNIVERSAL OIL COOLER KIT
There are two different types of oil cooler system. R (Replacement) TYPE is to relocate oil filter. Attachment of S (Sandwich) TYPE is inserted between engine block and oil filter.
Thermostat controls oil temperature
HKS Oil Cooler uses high efficient core. Thus it has thermostat to prevent oil viscosity friction due to over-cool (Except some vehicles). The thermostat responds quick to temperature. When oil temperature is not enough warm, it bypasses core to warm up engine quickly. If oil temperature exceeds thermostat working temperature, it flows oil to core to cool.
Thermostat closing start temperature 70?(±3?)
Thermostat closing complete temperature 80?(±3?)
* Applicable Meter fitting Oil Temp. Fitting M10xP1.0(R TYPE only), M12xP1.25 Oil Pressure Fitting PT1/8
Thermostat has relief function for safety
In case oil pressure has been unusually increased like core is damaged or oil line is stopped, oil is relieved from thermostat and it bypasses core to prevent engine failure and rupture of oil line.
Stainless mesh hose oil line for durability.
To connect surely, US Aeroquip stainless mesh hose and fitting, which are good function, durability and looking proofed by military usage, are used.
S-TYPE SPECIFIC INFORMATION
Attachment of HKS OIL COOLER S TYPE is inserted between oil filter and engine block. It is a high quality performance product. Mesh hose and fitting are Aeroquip. The attachment has sensor holes for oil temperature and pressure gauge.
* It does not relocate oil filter.
- Adopter thermo : M12xP1.25 (2 holes), PT1/8(1 hole)
UNIVERSAL OIL COOLER KIT S TYPE
Length of hose 3m
197×158.8×32, 12 rows (No.129)
- Core has been changed to popular size. (No. 012 --> No. 129)
* It is possible to install to vehicles which thread size of stock oil filter is 3/4-16UNF or M20×P=1.5. (Excluding some vehicles.)
sorry dunno to much about the specifics hope that helps.