NOS - 16221NOS

NOS Black T7075 aluminum 4AN-660 Bottle Nut Adapter

Nitrous Bottle Nut Adapter; -4AN-660; 7075 Aluminum; Black;

Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro–Stock champion. Holley's products include performance fuel pumps, fuel injection, intake manifolds, cylinder heads & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies, Hooker Headers, Flowtech Headers, NOS, Weiand, or Earl's, Holley products can give you the edge you need over the competition.

• Made from 7075 aluminum for high strength and durability
• Black anodized finish for great looks and corrosion resistance
• Fits 660-style bottle valves
• Radius exit for maximum flow
• Lighter weight versus chrome plated bottle nuts
• Available in -4, -6 & -8 AN sizes
• CGA #660 Internal Threads