SLE AN / ORB Block Off Cap with O-Ring(AN4, AN6, AN8, AN10, AN12)

SLE AN / ORB O-Ring Block Off Cap (AN4, AN6, AN8, AN10, AN12) Description: SLE AN / ORB Block Off Caps are designed to securely seal unused AN and ORB (O-Ring Boss) ports in fuel, oil, coolant, and fluid systems. Each cap is CNC machined and includes a high-quality O-ring to provide a reliable, leak-free seal without the need for thread sealant. Available in AN4, AN6, AN8, AN10, and AN12 sizes, these caps are ideal for custom fuel systems, oil systems, coolant lines, catch cans, regulators, fuel rails, and other performance applications. Features: Available in AN4, AN6, AN8, AN10, AN12 Fits matching AN and ORB ports Includes O-ring for a positive leak-free seal CNC machined aluminum construction Suitable for gasoline, ethanol, methanol, oil, coolant, and water Corrosion resistant finish Reusable design What’s Included: (1) AN / ORB Block Off Cap (1) Pre-installed O-ring Fitment: Universal fit for matching AN and ORB port size selected Commonly used on fuel rails, regulators, distribution blocks, catch cans, coolant systems, and oiling systems Perfect for safely sealing unused ports while maintaining a clean, professional appearance in any engine bay.