Standard Ignition DFI14 Diesel Exhaust Fluid (DEF) Injection Nozzle

Diesel Exhaust Fluid Injection Nozzle for GM Diesel Applications

Standard Ignition DFI14 is a Diesel Exhaust Fluid (DEF) injection nozzle built for emission control service on select GM diesel vehicles. It features a gray finish, a female connector, a bolt-on mount, and an included O-ring for sealing at the installation point.

Compatible With 2020-2021 Chevrolet Silverado 1500, 2020-2021 GMC Sierra 1500, 2021 GMC Yukon, 2021-2022 Chevrolet Tahoe, 2021-2022 Cadillac Escalade, and 2021-2022 Cadillac Escalade ESV. This Standard Ignition DFI14 replacement is also cross-referenced to Motorad DEF103 for the same application.

Key Features

• Diesel Exhaust Fluid (DEF) injection nozzle for emission control repair
• Gray finish for OE-style appearance
• Female connector with 2 male terminals
• Bolt-on mount for direct attachment at the vehicle location
• O-ring included for sealing
• Standard Ignition DFI14 part number for catalog matching and service lookup

Detailed Description

Standard Ignition DFI14 is a DEF injection nozzle used in the emission control system to deliver Diesel Exhaust Fluid into the exhaust aftertreatment stream. The bolt-on design, single female connector, and 2-terminal electrical interface support direct replacement service on select Chevrolet, GMC, and Cadillac diesel applications. Use this part when servicing DEF dosing hardware on vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, Cadillac Escalade, Cadillac Escalade ESV, and GMC Yukon. The DFI14 part number helps confirm the correct emission component during diagnosis and replacement.

Common Issues This Part Can Help Address

• DEF injection nozzle leakage at the mounting point
• Faults related to improper DEF dosing into the exhaust system
• Emission control warning lights tied to nozzle performance
• Connector or terminal-related service needs at the nozzle assembly
• Sealing concerns where the O-ring interface is worn or damaged

Installation Notes and Tips

Verify the vehicle’s emission system configuration before replacement and compare the connector style, terminal count, and mount type to the original part. The DFI14 installs with a bolt-on attachment and uses an included O-ring; mounting hardware is not included. Confirm fitment by year, make, and model before service, especially on 2020-2021 Silverado 1500 and Sierra 1500 applications and 2021-2022 Tahoe, Escalade, and Escalade ESV applications.

Quality Assurance

Standard Ignition supplies emission control components for service replacement applications, and DFI14 is cataloged to match the listed GM fitments and cross-reference DEF103 for the same application.