CSF 13+ BRZ / 13-20 Toyota 86 / 22+ GR86 Aluminum Filler Neck w/ High Pressure Radiator Cap

Premium aluminum radiator filler neck assembly engineered for Subaru BRZ, Toyota 86, and GR86 models, featuring integrated high-pressure radiator cap for improved cooling system efficiency. CNC-machined from high-quality aluminum for superior strength and corrosion resistance compared to factory plastic components. The high-pressure cap increases system boiling point, allowing coolant to operate at higher temperatures before vaporizing, crucial for track driving and spirited street use. Precision-engineered for direct bolt-on fitment replacing fragile factory plastic filler neck prone to cracking and failure. Anodized finish provides durable protection while delivering refined aesthetics for show-quality engine bays. Includes premium pressure cap calibrated for optimal cooling system performance. Essential upgrade for 86 platform owners pursuing reliability improvements, track days, or simply seeking to eliminate common failure points in the factory cooling system.

Eliminate the common factory filler neck failure point that can leave you stranded with coolant leaks. Improve cooling system efficiency with high-pressure operation allowing elevated coolant temperatures without boiling. Perfect for track day enthusiasts and spirited drivers demanding reliable cooling system components. Add refined aesthetics to your engine bay with durable anodized aluminum construction replacing cheap plastic factory parts. Invest in proven reliability upgrades trusted by the 86 platform community for worry-free performance driving.