Radiator Caps

108kPa (1.1kgf/cm²)
Part Number: HPRCE-11S1
Price: 2,000 yen
 
127kPa (1.3kgf/cm²)
Part Number: HPRCE-13S1
Price: 2,000 yen
 
Filler Sealing Type
Part Number: HPRSCE-S
Price: 600 yen

 
HPI Radiator Caps increase the internal pressure of the cooling system, effectively raising the boiling point of the coolant.
By elevating the boiling point, the cap suppresses cavitation (the formation of air bubbles) caused by boiling, ensuring more stable cooling performance.

 
Specifications
Body Material: Stainless Steel
Gasket Material: Silicone
Valve Opening Pressure: 1.1kgf/cm² / 1.3kgf/cm²
Fitment Type: S-Type (Primarily compatible with most Nissan vehicles)

 
◆ Usage Precautions
Increased System Pressure: Because the valve opening pressure is higher than the factory setting, the internal pressure of the radiator and hoses will increase.
Leak Risk: Installing this cap on a vehicle with aged or deteriorated hoses and seals may lead to coolant leaks.
Maintenance: Always ensure that relevant consumable parts (hoses, clamps, etc.) are in good condition or replaced before using this product.