Nitrous Express 16191 6AN Female to 4AN Male Adapter Black

The Nitrous Express 16191 is a precision-machined step-down adapter fitting designed for nitrous oxide and fuel system applications. This adapter converts a 6AN female port to a 4AN male fitting, allowing you to connect different sized AN (Army-Navy) fittings in your performance plumbing system.

Key Features:

• 6AN female to 4AN male configuration for versatile system integration
• Black anodized aluminum construction for corrosion resistance and durability
• Precision-machined threads ensure leak-free connections
• Compatible with nitrous oxide, fuel, and oil systems
• Lightweight design minimizes added weight to your setup

This adapter is essential for building custom nitrous systems where line size changes are required, or when connecting components with mismatched AN fitting sizes. The black anodized finish provides a professional appearance while protecting against corrosion in harsh engine bay environments.