The Napa Echlin ST45 is a 4-terminal starter solenoid designed to fit 1984-1992 Cummins 6BT 5.9L engines. It features a bolt-on mounting style and is a genuine NAPA product. The solenoid is manufactured in China with a matte finish and is part of the Starter Motor Parts category. Its OE/OEM part number is 5594, and it is interchangeable with various part numbers such as 938F and STSB1053. This solenoid is not a vintage part and does not have universal fitment. It comes with a California Prop 65 warning for cancer and reproductive harm.


Representative item is shown. New old stock with original packaging. Item weight 11 oz. Made in China. No returns if installed. Please review our business policies in our store for information regarding returns, shipping and warranties. Please review our business policies in our store for information regarding returns, shipping and warranties.