The heart of a modern SCR (Selective Catalytic Reduction) system is not the big parts you see—it’s the little ones working with perfect timing. In Caterpillar engines from 2018 to 2024, the OEM 516-2724 DEF doser injector plays a pivotal role in making sure the right amount of urea (DEF) is injected into the exhaust stream. When that dosage isn’t correct—because of wear, clogging, or failure—your emissions system begins to misbehave.
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Accurately injects measured quantities of DEF into the exhaust line at just the right moments
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Works in coordination with ECU commands to maintain optimal NOx reduction by the SCR system
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Ensures urea is injected cleanly, avoiding spray pattern degradation or clogging
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Helps prevent fault codes, emissions warnings, or engine derates triggered by incorrect dosing
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Built to OEM 516-2724 tolerances for drop-in compatibility and system calibration
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Designed to withstand temperature extremes, vibration, and exposure to exhaust environment
A failing doser injector often slips under the radar until alarms start flashing. By installing a correct, high-quality OEM 516-2724 injector, you restore precise urea control to your system, protect your emissions components downstream, and keep your engine’s performance and compliance stable. In the world of emissions, this small device is mighty.
