DEF Injectors
Full range of automotive-grade injectors for trucks and buses
Full range of automotive-grade injectors for trucks and buses
Direct OE replacements, tested at the Dinex Test Center for reliability and performance.
A full range of DEF components to keep your system running and simplify sourcing.
Stocked for quick delivery—DEF filters even include silicone lube for easy installation.
The DEF injector sprays fluid at high pressure into the exhaust stream, where it mixes thoroughly and enables NOx reduction in the SCR catalyst.
A common cause of injector failure is DEF contamination—often due to poor storage, handling, or low-quality fluid. This can lead to improper dosing, poor mixing, and crystallization buildup.
If you’re replacing an injector, be sure to inspect the full system to identify the root cause. Choose Dinex injectors for the ideal balance of quality, durability, and value.
For more tips on keeping your DEF system in top shape, check out Episode 5 of our Dr. NOx video series.
