LIONEL CLEAR HEADLIGHT LENS FOR POSTWAR SHORT TAPPERED STEM. FOR MANY STEAM & DIESEL LOCOMOTIVES.. SHAFT SIZE DIAMETER STARTS 0.16" AND TAPPERS UP TO 0.18" DIAMETER.. PLEASE CHECK OUT ALL THE PHOTO'S FOR DETAIL MEARSUREMENTS. THEN MEARSURE THE I.D. OF YOUR LOCO HEADLIGHT HOLE.  THIS LENS IS THE MOST COMMON USED BY LIONEL AND WILL FIT MANY ENGINES, EVEN PERWAR, POSTWAR, MPC, & MODERN ENGINES. 

WE ARE HERE TO HELP JUST ASK 

PART# 1666E-20.  FITS:  MOST POSTWAR SHORT STEAM LOCOS INCLUDING 224, 224e, 646, 665, 675, 681, 685, 1654, 1655, 1666, 1664, 2016, 2018, 2026, 2034, 2036, 2037, 2046, 2055, 2065, ALSO FITS 2400 SERIES OBSERVATION CARS.  

QUALITY PRODUCTION PART FROM HARD, DURABLE PLASTIC.