DeatschWerks 440cc Injectors

1990–2005 Mazda Miata (NA/NB) 440cc Fuel Injectors

Part #: 18U-05-0440-4

Overview

The DeatschWerks 440cc Injectors are a high-performance fuel delivery solution designed specifically for Mazda Miata models from 1990 to 2005, including both NA and NB chassis. Whether you're building a street-driven Miata, a track-ready machine, or an off-road project, these injectors provide reliable, precise fuel delivery to support your modifications and enhance engine performance.

Engineered for enthusiasts who seek improved throttle response, increased horsepower potential, and consistent fueling, these injectors are an excellent upgrade over stock units. They are ideal for applications involving turbocharging, supercharging, or other performance modifications that demand higher fuel flow. With their accurate spray pattern and high-quality construction, DeatschWerks injectors help ensure your Miata runs smoothly under various driving conditions.

Key Features

DeatschWerks 440cc injectors incorporate advanced engineering and premium materials to deliver optimal performance and durability. Key features include:

• High-flow 440cc/min fuel flow rate, supporting increased power output and fueling needs for modified engines.
• Precision-machined, high-quality stainless steel internals for long-lasting reliability and resistance to corrosion.
• Electrically balanced spray pattern for efficient fuel atomization, promoting better combustion and improved throttle response.
• Drop-in fitment for Mazda Miata NA and NB models from 1990 to 2005, ensuring straightforward installation without modifications.
• Compatible with stock and aftermarket fuel rails, making them suitable for a wide range of performance builds.
• Designed to support increased horsepower and torque, especially when paired with upgraded fuel pumps and tuning.
• O-rings and seals included for a secure, leak-free installation.
• Built with high-impedance design, compatible with most stock and aftermarket ECU setups.
• Manufactured to meet or exceed OE standards, ensuring consistent quality and performance.

Construction & Design

The DeatschWerks 440cc injectors feature a robust construction utilizing high-grade stainless steel internals and precision-machined components. The injectors are designed with a compact, drop-in form factor that fits seamlessly into the factory fuel rail of Mazda Miatas from 1990 to 2005. Their high-impedance design ensures compatibility with most stock and aftermarket engine management systems.

The internal components are engineered for durability and resistance to the harsh conditions of high-performance applications. The spray pattern is optimized for efficient fuel atomization, promoting cleaner combustion and better power delivery. The injectors are also engineered to provide consistent flow rates across their operating range, ensuring reliable fueling during spirited driving or extended track sessions.

Performance & Sound

While specific horsepower gains depend on your overall build and tuning, upgrading to 440cc injectors like these can significantly improve your vehicle's fueling capacity, supporting higher power levels and more aggressive tuning. You can expect smoother throttle response, more precise fuel delivery, and improved engine efficiency. These injectors are designed to work seamlessly with upgraded fuel pumps and engine management systems to maximize performance.

Installation & Fitment

The DeatschWerks 440cc injectors are a direct replacement for the factory units on Mazda Miata NA and NB models from 1990 to 2005. Installation is straightforward, requiring no modifications to the fuel rail or wiring harness. They are a bolt-on upgrade that can be installed with basic hand tools and proper safety precautions. For optimal results, a professional tune is recommended to calibrate the fuel delivery and maximize performance gains.

• No cutting, drilling, or tuning is required for installation.
• Compatible with stock and aftermarket fuel systems.
• Designed for easy plug-and-play installation in your Mazda Miata.

What's Included

• Set of four DeatschWerks 440cc fuel injectors
• O-rings and seals for a secure fit
• Installation instructions (if applicable)

Ideal For

• Mazda Miata owners seeking increased fueling capacity for performance upgrades
• Enthusiasts building turbocharged or supercharged setups
• Track day and spirited driving enthusiasts
• Anyone looking for reliable, high-quality fuel injectors for their NA or NB Miata