This Kawasaki KLF400 CDI UNIT has been Re-engineered and Improved! Quality Replacement CDI unit (spark unit) for a Kawasaki KLF400. The OEM # for this unit is 21119-1341 you may also have a stamp on your box that reads KLF400-B1, KLF400-B2,KLF400-B3,KLF400-B3,KLF400-B4,KLF400-B5,KLF400-B6,KLF400-B7.  Ground shipping available only.