Nitrous Express Direct Port Plate System (Billet)

2003–2022 Dodge / Jeep 5.7L, 6.1L, 6.2L, 6.4L Hemi Engines

Part #: 20958-00

Overview

The Nitrous Express Direct Port Plate System is engineered specifically for modern Hemi engines found in Dodge and Jeep vehicles from 2003 through 2022. This high-performance nitrous setup delivers a powerful boost ranging from 100 to 400 horsepower, making it an ideal upgrade for enthusiasts seeking reliable and consistent power gains. Unlike single nozzle or throttle body plates, the direct port design ensures precise and equal distribution of nitrous oxide and fuel to each cylinder, optimizing combustion efficiency and maximizing horsepower potential.

Designed for ease of installation, the system bolts directly under the intake manifold, eliminating the need for complex modifications or aftermarket hoods. This makes it a practical choice for those wanting a clean, factory-like installation with impressive performance results.

Key Features

This direct port nitrous system combines advanced engineering with user-friendly features to enhance your Hemi-powered vehicle’s performance:

• Capable of delivering 100 to 400 horsepower through direct port nitrous injection
• Equal nitrous and fuel distribution to each cylinder for optimal combustion
• 5/8" thick billet aluminum plates that fit under the intake manifold without hood clearance issues
• Black anodized finish for corrosion resistance and a sleek appearance
• Includes TPS auto-learn switch to activate nitrous only at wide-open throttle and deactivate when off throttle
• Comes with stainless braided nitrous oxide and fuel lines for durability and safety
• Complete hardware kit including fuel rail adapter, master arming switch, relay, and relay harness
• Manufactured in the USA with precision billet aluminum construction

Construction & Design

The direct port plates are crafted from high-quality billet aluminum, providing exceptional strength and heat resistance. The plates are anodized black to protect against corrosion and wear, ensuring long-lasting durability even under demanding conditions. At 5/8" thickness, the design maintains a low profile that fits seamlessly beneath the intake manifold, preserving factory hood clearance and vehicle aesthetics. Stainless steel fittings and braided lines further enhance the system’s reliability and safety, making it suitable for both street and track applications.

Installation & Fitment

Installation is straightforward thanks to the bolt-on design that mounts directly under the intake manifold. This eliminates the need for cutting or modifying the hood, simplifying the upgrade process. The kit includes all necessary hardware, fittings, and adapters to complete the installation without additional parts. The TPS auto-learn switch ensures the nitrous system only activates at wide-open throttle, providing safe and controlled power delivery.

This system fits a wide range of Dodge and Jeep models equipped with 5.7L, 6.1L, 6.2L Hellcat, 6.4L 392, and 6.4L SRT Hemi engines, covering vehicles from 2003 to 2022. Compatible models include Dodge Ram 1500, 2500, 3500, Durango, Charger, Challenger, Magnum, Jeep Grand Cherokee, Commander, Wrangler, and Wagoneer.

What's Included

• Direct port Hemi nitrous plates with stainless steel fittings
• TPS auto-learn switch for wide-open throttle activation
• Jetting calibrated for 100 to 400 horsepower
• Stainless braided nitrous oxide and fuel lines
• Master arming switch
• Relay and relay harness
• Fuel rail adapter
• All necessary hardware for complete installation

Ideal For

This Nitrous Express Direct Port Plate System is perfect for performance enthusiasts and racers who demand consistent, high-horsepower gains from their Dodge or Jeep Hemi engines. It is especially suited for those who want a clean, reliable nitrous setup that integrates seamlessly with factory components and delivers precise fuel and nitrous distribution to each cylinder. Whether upgrading a street machine or preparing a track-ready build, this system offers a balanced combination of power, durability, and ease of installation.

Nitrous Express (NX) manufactures high-performance nitrous oxide systems and components designed to add significant horsepower on-demand for street/strip and racing applications. With complete plate and direct-port style systems plus supporting solenoids and hardware, NX is built for tuners and racers who want controlled power gains—and the company also owns Snow Performance for water-methanol solutions.