NOS Late Model Billet Fuel Line Adapters for Nitrous Systems

The NOS Late Model Billet Fuel Line Adapter line provides a clean, professional solution for tapping into a factory fuel system when adding a nitrous oxide system to a fuel-injected vehicle — with no cutting, drilling, or permanent modifications required. Each adapter installs directly between the OE fuel rail and OE fuel hose, creating a fully reversible, bolt-on fuel tap that works seamlessly with nitrous plates, complete nitrous kits, and custom fuel plumbing setups.

Key Features:

• Modification-free installation — simply disconnect the OE fuel hose and install the adapter between the factory fuel rail and hose for a clean, reversible setup that preserves the integrity of the stock fuel system
• Rotatable NPT ports — multiple 1/8" NPT ports can be configured in any direction to accommodate a wide variety of engine bay layouts and fuel line routing needs
• AN adapter compatibility — includes a dedicated -4 AN adapter port for feeding fuel directly to a nitrous plate or complete nitrous system
• Precision billet aluminum construction — machined from high-grade aluminum with a durable anodized finish for long-term corrosion resistance in demanding performance environments
• Complete hardware included — each adapter ships with all necessary fittings, plugs, and hardware for a leak-free installation right out of the box
• Multiple configurations available — the product line spans a range of fitment options to suit different OE fuel rail sizes across a variety of late-model fuel-injected applications

Whether building a street machine or a dedicated track car, the NOS Late Model Billet Fuel Line Adapter line delivers a trusted, hassle-free path to integrating nitrous into any fuel-injected platform. The flexible port orientation and complete included hardware make installation straightforward for both experienced builders and first-time nitrous installers.

NOS (Nitrous Oxide Systems) has been the pioneering name in nitrous performance since the late 1970s. As part of the Holley Performance family of brands, NOS continues to set the standard for quality, reliability, and ease of use across its entire lineup of nitrous products and accessories.