Standard Ignition DFI14 DEF injector for the 2020-2021 Chevrolet Silverado 1500 6-cylinder 3.0L and other vehicles sprays diesel exhaust fluid into the exhaust stream. Also called a DEF doser, it belongs to the emissions system that treats diesel exhaust.
- Laser-drilled spray holes give individual sprays for spray preparation
- Atomization for effective NOx reduction and DPF regeneration
- High-grade material that resists extreme exhaust heat during operation
- Precision wound and trimmed solenoid windings let the computer command efficient delivery of diesel exhaust fluid
- Extensive testing for performance and long service life under harsh conditions
Quick facts
- Part: Standard Ignition DFI14 DEF injector
- Also called: DEF doser
- Fits: 2020-2021 Chevrolet Silverado 1500 6-cylinder 3.0L and other vehicles
- Condition: New
A DEF warning light or an emissions fault can point toward the injector, but a DEF supply problem or a wiring fault can also set one. Before you replace the injector, rule out the fluid supply and the connector and wiring, and have a shop scan the system if the cause is unclear.
Fits
This direct-fit OE replacement suits the 2020-2021 Chevrolet Silverado 1500 6-cylinder 3.0L, the 2020-2021 GMC Sierra 1500 6-cylinder 3.0L and the 2021-2022 Chevrolet Tahoe 6-cylinder 3.0L, and each of them takes one.
Specifications
Fit and size
- Quantity per vehicle: 1
- Mount type: bolt on
- Connector: 1, female
- Terminals: 2, male
Build and materials
- Type: DEF injector nozzle
- Condition: New
- O-ring: included
- Country of origin: United States
In the box
One DEF injector with an O-ring. Mounting hardware is not included, so plan on new bolts rather than reusing the old ones.
Interchange: 800-97252
DEF14 · DEF103 · 55494572 · 55509767 · 55515114
This part cross-references / interchanges with the following part numbers:
DEF14, DEF103, 55494572, 55509767, 55515114, 800-97252
Frequently Asked Questions
Does the Standard Ignition DFI14 DEF injector fit the 2020-2021 GMC Sierra 1500 6-cylinder 3.0L?
Yes. Standard Ignition DFI14 fits the 2020-2021 GMC Sierra 1500 6-cylinder 3.0L, and that truck takes one. For a different vehicle, check your car in the "Vehicles it fits" section.
Is an O-ring included with the DFI14 DEF injector?
Yes, Standard Ignition DFI14 comes with an O-ring. Mounting hardware is not included.
What connector does this DEF injector use?
This DEF injector has one female connector with two male terminals.
What do the laser-drilled spray holes do on this DEF injector?
They give individual sprays that prepare the diesel exhaust fluid for atomization, which supports NOx reduction and DPF regeneration.
Can the DFI14 be used in place of number 55494572?
Yes. 55494572 is one of the numbers this Standard Ignition DEF injector replaces, along with 800-97252 and DEF14.
