Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 10990-05A 510-70 found under Checker Oil by Tts Marine Ab Formerly Tts Ships. The National Stock Number assigned to this part is 2815014404651, and the Federal Supply Class is 2815 Diesel Engines And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 10990-05A 510-70.