Mishimoto Radiator Cap 1.3 Bar - Large Domestic

Mishimoto high-pressure radiator cap raises the coolant boiling point for a more efficient cooling system that resists boil-over under load. Corrosion-resistant construction with a reliable seal. Rated to 1.3 bar (19 PSI), above OEM; large neck for most domestic vehicles. Prevents leaks into the overflow and holds proper coolant level.

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy