THIS MAGNET KIT FITS ON AL-KO 8K-16K AXLES WITH ELECTRIC BRAKES. THE OLD AL-KO PART # IS K568252. THIS KIT INCLUDES: 1- VENTED MAGNET ASSEMBLY, 1- MAGNET RETAINER, 1- STRAIN RELIEF, 1- CRIMP RING 1", 1- ADAPTER STRAIN RELIEF, 1- MAGNET SPRING.