Price $28.80
Shipping in the USA $6.00
Koyo
Radiator Cap: Can you handle the pressure? The Koyorad
hyper Radiator Cap is for intelligent tuners who demand to
extract every ounce of cooling efficiency from their
performance machines. Koyorad highly recommends our 1.3 bar
Koyorad Hyper Cap (Koyo part number SK-C13) for use with
Koyorad All Aluminum Racing Radiators (when applicable). The
Koyorad Hyper Cap is made in Japan with the highest quality
components ensuring the best possible performance from your
Koyorad Racing radiator. By increasing the coolant pressure
and raising its boiling point, the faster your engine is
relieved of excessive engine heat. The Hyper Radiator Cap
withstands an open valve pressure rating of 1.3kg cm2, adding
to under your the hood desire for extra toughness an elegant
touch of style.
*Why is increased Pressure Better?*
It’s simple. When water is pressurized, its natural boiling
point is increased. Most modern vehicles are equipped with a
0.9 Bar pressure cap. Koyorad’s Hyper Cap is rated at 1.3 Bar
which increases the boiling temperature of your coolant to
267.80 degrees Fahrenheit. That is nearly a 56 degree increase
over water's normal boiling point. By increasing the boiling
point of water, an engine's cooling system will have the added
heat capacity, maximizing performance under ever-changing
racing conditions.