The DEF system plays a crucial part in helping modern diesel engines operate cleanly and efficiently, and one of its most important components is the DEF doser injector. The Case IH / New Holland DEF Doser Injector (OEM 47581674) is designed to deliver accurate DEF flow into the exhaust stream, supporting proper emissions control and dependable system function. For customers searching for a reliable replacement, understanding what this injector does—and why it matters—can make choosing the right part much easier.
This component maintains consistent DEF delivery, ensuring the emissions system functions correctly. Below are key points that highlight its essential role:
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Accurate DEF Injection – Meters the correct amount of DEF into the exhaust stream to support emissions conversion.
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Supports System Efficiency – Helps prevent issues such as clogged SCR catalysts, warning lights, or derate modes.
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Prevents Crystallization Build-Up – Reduces the risk of DEF crystallizing and restricting exhaust flow.
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OEM-Grade Replacement – The OEM 47581674 injector matches original specifications for proper fit and long-term reliability.
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Restores Proper DEF System Operation – Replacing a failing injector helps eliminate DEF-related system faults.
Replacing a malfunctioning DEF doser injector is essential for keeping your emissions system operating as designed. The Case IH / New Holland DEF Doser Injector (OEM 47581674) delivers dependable DEF dosing to support stable system performance and reduce the chance of costly downtime. Customers can rely on Tamerx to provide high-quality parts that help keep their equipment running smoothly and reliably.








