The Case IH 3404467R91 is a genuine OEM sealing ring designed for critical applications within the injection pump system of Case IH and David Brown agricultural tractors. This sealing component ensures a tight, leak-free seal, maintaining optimal fuel system performance and preventing contamination. It is compatible with a wide range of models including the Case IH 385, 485, 585, 685, 785, 885, 985, 3220, 3230, 4210, 4230, 4240, and David Brown 1190, 1290, 1390, 1490, 1690 series.