Nitrous Express 16185 Billet Fuel Rail Adapter GM Chrysler EFI 3/8 10mm Outlets

Vehicle Fitment

• Semi-Universal Fit - Compatible with GM and Chrysler/Mopar late model return-less EFI fuel systems using 3/8 in. SAE or 10mm quick-connect fuel rail fittings

Fitment Notes

• Compatible with GM and Chrysler/Mopar return-less style EFI fuel rails using 3/8 in. or 10mm quick-connect fittings - confirm fuel rail fitting size before ordering
• Not designed for return-style fuel systems or vehicles with threaded AN fuel rail ports
• For 45-degree or 90-degree outlet configurations, see related PN: 16185-45 (45°) and PN: 16185D (90°)
• Straight (inline) outlet style - verify clearance with surrounding components before installation

Features

• Billet aluminum tee-style adapter taps directly into the factory fuel rail with no cutting or drilling required
• Dual 1/8 in. NPT female threaded gauge ports (top and bottom) allow simultaneous nitrous feed and fuel pressure gauge connections
• 3/8 in. SAE female/male quick-connect design locks into the factory fuel rail without modifying OEM fittings
• High-flow design minimizes fuel restriction for reliable nitrous system fuel delivery
• Black anodized finish resists corrosion and fuel exposure for long-term durability
• Quick installation - completes in minutes with basic hand tools

Specifications

• Part Number: 16185
• Adapter Style: Tee / Straight (inline)
• Inlet Connection: 3/8 in. SAE Female Quick-Connect
• Outlet Connection: 3/8 in. SAE Male Quick-Connect (inline pass-through)
• Gauge/Nitrous Ports: Two (2) x 1/8 in. NPT Female (top and bottom)
• Compatible Fuel Line Size: 3/8 in. SAE or 10mm quick-connect
• Material: Billet Aluminum
• Finish: Black Anodized
• Application: GM / Chrysler EFI Late Model Return-Less Fuel Systems
• Quantity: Sold Individually (1x adapter)

Included Components

• 1x Nitrous Express 16185 Billet Fuel Rail Adapter
• 1x -4 AN to 1/8 in. NPT adapter fitting
• 1x 1/8 in. NPT plug (for unused port)

Product Description

The Nitrous Express 16185 Billet Fuel Rail Adapter is a high-flow tee fitting designed to tap into GM and Chrysler late model return-less EFI fuel rails without any cutting, drilling, or permanent modification. It installs in minutes by connecting inline with the existing 3/8 in. or 10mm quick-connect fuel rail fitting, and provides two 1/8 in. NPT ports - one for the nitrous system fuel solenoid feed and one for a fuel pressure gauge - making it a practical dual-purpose solution for any EFI nitrous install.

Machined from billet aluminum with a black anodized finish, the 16185 is built to withstand continuous fuel exposure while maintaining a clean, factory-compatible appearance. It includes a -4 AN to 1/8 in. NPT fitting and an NPT plug for the unused port. For applications requiring a different outlet angle, Nitrous Express also offers the 16185-45 (45-degree) and 16185D (90-degree) variants to suit tight engine bay clearances.