Hey Peterbilt owners, does your old A/C or heater control knob look worn out or just plain ugly? We've got the perfect fix! This JUQAFY replacement knob is designed to fit a bunch of Peterbilt models from 1987 all the way up to 2011, including the 330, 335, 357, 367, 375, 378, 379, 384, 386, and 387. It's a direct swap for part numbers 121-0001-000 and 702-5401, so you know it's gonna fit right. It's made from tough, high-temperature resistant ABS plastic with a chrome-plated finish that looks sharp and resists wear. Installation is super simple – just pull off the old knob and pop this one on. Then you're back to easily adjusting your cab temperature, whether it's a hot summer day or a chilly winter night. Keep your rig looking clean and functioning like it should without breaking the bank. Perfect for a quick interior refresh or fixing a broken part.