Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GT4053-604 found under Parts Kit Trim And by Stewart And Stevenson Power Inc. The National Stock Number assigned to this part is 2590013053945, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GT4053-604.