Radium 3/8in SAE Male to 1/8NPT Male - Ford Mustang GT FN 18-21

Radium 3/8" SAE Male to 1/8" NPT Male Adapter — Ford Mustang GT Coyote 5.0L (2018-2019)

This adapter fitting (14-0358) is required to connect the OEM direct injection pump feed hose on the Ford Coyote 5.0L V8 direct-injection engine to the Radium fuel rail system. It converts the OEM 3/8" SAE male quick-connect to a 1/8" NPT male port, enabling a clean and reliable fuel system integration with the Radium 20-0433 fuel rails.

Note: 1 fitting included only. Product images may show the fitting installed with a rail kit and OEM manifold for illustration purposes — these are not included.

Vehicle Fitment:

• 2018-2019 Ford Mustang GT — Coyote 5.0L V8 (with Radium 20-0433 Fuel Rails)

Specifications:

• Male side 1: 3/8" SAE Quick Connect Male
• Male side 2: 1/8" NPT Male
• Application: OEM direct injection pump feed hose adapter

Available Part Numbers:

• 14-0358 — 3/8" SAE Male to 1/8" NPT Male Adapter, Ford Mustang GT Coyote 5.0L (2018-2019)

Why Radium Engineering?

• ✅ Manufactured in the USA to motorsport-grade tolerances
• ✅ CNC-machined for precise OEM-to-aftermarket fuel system integration
• ✅ Trusted by tuners and race teams running high-power Coyote 5.0L builds worldwide
• ✅ Direct fitment with Radium 20-0433 fuel rails — no cutting or fabrication required
• ✅ Compatible with E85, ethanol, methanol, pump petrol, and flex fuel applications