Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L22LBP4 found under Light Warning by Whelen Engineering Company Inc. The National Stock Number assigned to this part is 6220016654180, and the Federal Supply Class is 6220 Electric Vehicular Lights And Fixtures. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like L22LBP4.