Dorman 904-464 Diesel Exhaust Fluid (DEF) Injector

DEF Injector for Ford Diesel Emissions Systems

Dorman 904-464 is a diesel exhaust fluid injector built for Ford diesel emissions systems that need accurate DEF delivery and reliable operation. It is a metal, bolt-on replacement with a black finish and a 15-ohm nominal resistance, made for Transit and Super Duty applications where injector fouling can trigger warning lights and emissions test failures.

• Metal construction for diesel exhaust fluid service
• Bolt-on mount type for direct replacement installation
• Black finish
• Male inlet with 6.4 inlet diameter and plastic fluid cup inlet type
• Nominal resistance: 15 ohms
• Fluid type: Diesel Exhaust Fluid (DEF)
• Compatible with Ford Transit-150, Transit-250, Transit-350, Transit-350 HD, F-250 Super Duty, and F-350 Super Duty applications

Detailed Product Overview

This Dorman DEF injector, part number 904-464, restores proper diesel exhaust fluid metering in emissions systems exposed to heat, contamination, and normal wear. It is a direct-fit style replacement for 2015-2019 Ford Transit-150, Transit-250, Transit-350, and Transit-350 HD, plus 2011-2016 Ford F-250 Super Duty and F-350 Super Duty models. This part cross-references Standard Ignition DFI1 for the same application.

Use 904-464 when the original DEF injector is restricted, electrically out of range, or no longer delivering fluid correctly. Accurate injector function helps maintain emissions-system performance on Ford Transit and Ford Super Duty diesel trucks and vans.

Common Issues This Part Can Address

• DEF injector clogging from contamination or crystallized fluid
• Diesel emissions warning lights related to injector performance
• Failed emissions inspection caused by improper DEF dosing
• Reduced DEF spray pattern or inconsistent fluid delivery
• Electrical resistance faults at the injector circuit

Installation Notes and Tips

Verify the inlet style, mounting type, and electrical resistance before installation. Clean the surrounding DEF system components and inspect related lines and connectors for contamination or damage. Because mounting hardware and O-rings are not included, reuse or source the required service parts as needed during replacement.

Quality Assurance

Dorman designs replacement emission components to address common failure points in diesel systems. Part number 904-464 is built as a service replacement for Ford diesel applications where DEF injector performance is critical to emissions-system operation.