1、Strong Compatibility: Oil pressure sender is replacement for Caterpillar CAT Gen Set Engine 3406E, 3456, 3508, 3508B, 3512, 3512B, 3516, 3516B, C‑12, etc. 2、Part Number: Oil pressure sensor unit replace part number are 1946724, 194 6724 for reference. Please double check the part number of your item to ensure perfect fit. 3、High Precision Detection: The switch can accurately sense the oil pressure change inside the engine, and send a signal in time to maintain the normal working state of the engine. 4、Sturdy Metal: Oil temperature sender is made of high strength metal materials, wear resistant and can maintain a stable working even in harsh working environments. 5、Ideal Replacement: Fine craftsmanship, this is your ideal option and replacement for your original damaged and old sender, perfect for your model.