*** If you don't see your model number , please contact us to check it for you *** The Samsung key spring is an OEM replacement part responsible for providing tension and support to the microwave door latch. This ensures that the door properly latches and stays securely closed during operation. It is typically located inside the microwave door, connected to the latch assembly. The Samsung microwave door latch spring can also be used on Kenmore/Sears appliances. This part fixes the following symptoms: The microwave door does not close or stay closed. Difficulty in latching or unlatching the door. The door pops open during operation. Visible damage or wear to the latch spring. Unusual noises coming from the latch mechanism. This part fixes the following symptoms Door stuck closed Fits Models: Kenmore 40185043210, 40185044210, 40185046010, 40185043310, 40185049010, 40185046210, 40185042010, 40185043010, 40185049210, 40185044110, 40185143010, 40185143210, 40185044010, 40185042210, 40185042310 Our Policy: * Please check ETA before placing the order. * Items returned not in original conditions are subject to a 50% deduction or deny any credit. The part must not have any type of damage, such as signs of installation by the customer, marks, or scratch. Please contact us through messages for the following reasons :Our respond time is 24 hours. If you did not receive your item within the ETA . If you received an item that is does not fit, please provide us your model and serial number to check. If you need to return an item . Item not as described for one of the following reasons (Item is defective, Doesn't match description or photos, Received wrong item, Missing parts or pieces, Arrived damaged). Thank You for Shopping!