This black anodized radiator cap features Billet Specialties’ distinctive notch grip design, offering both high performance and a sleek, understated appearance. The cap’s outer shell is CNC machined from 6061-T6 billet aluminum and finished with a durable black anodize coating for corrosion resistance and a modern look. The notched edge ensures positive engagement, making installation and removal easy even in tight spaces or with gloves.

Internally, the cap incorporates a premium Stant 16 PSI pressure core, providing reliable performance for high-output cooling systems. It fits most standard U.S.-made radiator necks.

• 16 lb. pressure rating
• CNC machined from 6061-T6 billet aluminum
• Notch grip design for secure handling
• Durable black anodized finish
• Premium Stant internal cap
• Fits most standard domestic radiator necks