Fuel Injector Holder Assembly - Large (Bosch EV-1) Weld-On Additional Injector Holder

Fuel Injector Holder Assembly – Large (Bosch EV-1)

The Billet Speed Large Fuel Injector Holder Assembly is precision CNC machined in the USA from 6061 billet aluminum and designed for securely mounting a supplemental fuel injector in a charge pipe, intake tube, or custom intake manifold. Built for high-performance EFI applications, this weld-on injector holder provides a clean, reliable solution for auxiliary fuel delivery in turbocharged, supercharged, and custom engine builds.

Ideal for E85, methanol, and high-horsepower gasoline applications, the large injector holder makes it easy to add supplemental fueling without increasing the size of your primary injectors. It is commonly welded into intercooler piping or charge pipes ahead of the throttle body and can also be positioned near the turbocharger compressor for specialized fueling strategies.

Each holder is CNC machined to fit a 3-inch diameter tube and features an integrated 1/4" NPT fuel port with 3/4" wrench flats for easy fitting installation. Precision aluminum spacers and stainless steel hardware ensure the clamping force is applied to the holder—not the injector body—for proper sealing and long-term reliability.

Features

• Precision CNC machined in the USA from 6061 billet aluminum
• Weld-on design for charge pipes, intercooler tubing, intake tubes, and fabricated intake manifolds
• Fits Bosch EV-1, EV-6, EV-14 (standard and long), Siemens Deka, and
• Compatible with 48mm and 60mm injector lengths with 14mm O-rings
• Integrated 3/4" wrench flats simplify fuel fitting installation
• Machined to fit 3-inch diameter tubing for clean, accurate weld placement
• Straight weld end available upon request
• Includes stainless steel mounting hardware and precision aluminum spacers
• Engineered for E85, methanol, high-boost, and custom EFI fuel systems

Injector Compatibility

Compatible with:

• Bosch EV-1
• Bosch EV-6
• Bosch EV-14 (48mm and 60mm only)  *small holder is best*
• Siemens Deka
• Billet Atomizer injectors

Note: This holder is designed for injectors with 14mm O-rings and is not compatible with short (34mm) EV-14 or Pico injectors. For those applications, use the Billet Speed Small Fuel Injector Holder Assembly.