Thermostat for ER34, RB25

Low temperature thermostat

PART NUMBER: 
*OEM: 21200-V720A/21200-V7205
*Nismo: 21200-RS580
*Billion: BSN-01HFA

The NISMO Low-Temp Thermostat's radiator valve opens at a lower temperature, 62℃ as opposed to the standard 76.5℃. Getting the coolant circulating inside the engine earlier reduces the power loss commonly caused by rising temperatures like, for example, when high speed driving at a racetrack. Setting the valve's release threshold to a lower temperature keeps your fuel mix rich.

"Billion Super Thermo Large Flow Type" is a low-tempe thermostat that increases the valve opening part through which the cooling water passes, and raises the absolute flow rate when the thermostat is fully opened by 10.25% (RB/VG engine) than normal. The expansion of the waterway also reduced the pressure loss of the cooling water and greatly suppressed the occurrence of cavitation.　
Its power is maximised during high rotation and high loads such as circuits.
*high flow type, valve opens at 71℃

Compatible to:
RB20DE（T）
RB25DE（T）