ITEM NAME:44mm Swap Coolant Temperature Sensor Adapter M12 1.5 - 1/2 NPT for LS Engine Description: Male M12-1.5 to female 1/2" NPT adapter This adapts SBC/BBC 1/2" NPT coolant temp sensors to fit for LS series engines This adapter will fit all LS series engines. Will fit sensors with up to 1.73" length, measured from probe tip to the outer edge of adapter. Material: Iron Specification: Color: Silver Package Includes: 1 Piece Adapter 1 Piece Sealing Washer Note: Please allow slight dimension difference due to different manual measurement. SKU: DMO0009697152038523.This adapts SBC/BBC 1/2" NPT coolant temp sensors to fit for LS series engines. Male M12-1.5 to female 1/2" NPT adapter. This adapter will fit all LS series engines. 1 Piece Adapter. 1 Piece Sealing Washer.