Standard Ignition DFI4 Diesel Exhaust Fluid (DEF) Injection Nozzle

DEF Injection Nozzle for OE-Style Diesel Service

Standard Ignition DFI4 is a direct-fit diesel exhaust fluid injection nozzle built for precise DEF delivery in emission control systems. Its gray finish and OE-style construction support proper fit, form, and function for service on select Ram and Jeep diesel applications.

Key Features

• Direct-fit OE replacement for the original DEF injection nozzle
• Precision wound and trimmed solenoid windings for controlled DEF delivery
• Laser-drilled spray holes for individual spray pattern preparation
• High-grade material resists extreme exhaust heat during operation
• Gray color/finish
• Standard Ignition DFI4 for emission system repair and replacement

Detailed Description

Standard Ignition DFI4 is engineered for diesel exhaust fluid injection service where accurate spray delivery matters. The nozzle is designed to match OE fitment and function, while the solenoid windings help the engine computer command efficient DEF flow. Laser-drilled spray holes support consistent spray preparation, and the heat-resistant material is built for the demanding environment inside the exhaust stream. This part cross-references Bosch (e.g., 0444021046) for the same application.

Vehicle Fitment

• Fits 2019 Ram 1500 Classic, N/A
• Fits 2014-2018 Ram 1500, N/A
• Fits 2014-2017 Jeep Grand Cherokee, N/A
• Fits 2014-2017 Ram ProMaster 1500, N/A
• Fits 2014-2017 Ram ProMaster 2500, N/A
• Fits 2014-2017 Ram ProMaster 3500, N/A

Common Issues This Part May Address

• DEF spray pattern irregularities in the exhaust aftertreatment system
• Faulty diesel exhaust fluid delivery at the injector nozzle
• Emission system performance concerns tied to a worn or damaged nozzle
• Heat-related deterioration of the original DEF injection component
• Service replacement needs on Ram 1500, Ram ProMaster, and Jeep Grand Cherokee diesel applications

Installation Notes and Tips

Verify the part number and vehicle application before installation. Standard Ignition DFI4 is a direct-fit replacement, so it is intended to match the original mounting and system interface on listed Ram and Jeep models. Inspect the surrounding DEF system components for contamination or damage before completing the repair.

Quality Assurance

Built as an OE replacement, this nozzle is designed to deliver proper fit, form, and function for diesel exhaust fluid injection service. Standard Ignition uses precision solenoid winding and heat-resistant materials to support reliable operation in emission control applications.