Honda Large Generator Magnetic Dip Stick #3023 2 1/8" Dipstick Length. Fits Honda GX240 GX270 GX340 GX390 EM7000is and more! Honda Part # 15600-735-003 Easy to install. Replaces your existing dip stick and adds the protection your engine needs! Replacement O-ring available - Order #OR-03 Removes ferrous metal from the engine oil that can lead to damage. Extends the life of your engine! The Gold Standard in Engine Protection! Accept NO substitutions. CNC machined from Aircraft Aluminum! Made in the USA!