Feature 1OE Number: The referencing OE number of this cooling radiator hose sensor o ring are 17111711987, 13621743299, 1743299. 2Fitment: The cooling system o ring kit is a replacement for E46 M52 M54 320i 323i 325i 328i 330i xi, please check the model before ordering. 3Complete Accessories: The package includes O rings for the heat exchanger and O rings for temperature sensor in the lower radiator hose. 4Durable Material: Made of high toughness rubber, the seal ring is flexible, wear resistant, anti aging, good sealing and leakage proof. 5Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability.Item Type:CoolingRadiatorHoseSensorORingOENumber:17111711987,13621743299,1743299 .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Material: RubberMouting Location:(1) O ring for heat exchanger (17111711987x3):2x for heat exchanger to mounting plate1x for mounting plate-to-heat sink connection(2) O ring for temperature sensor in the lower part of the radiator hose (1743299, 13621743299)Fitment:Fits forE46 M52 M54 320i 323i 325i 328i 330i xiPackage List20 x CoolingSystemORingNotePlease double check the part number of your item, matching information is for reference only.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!