Sonnax offers super-hard impeller hub AL-90-3G. AL-90-3G is designed to adapt the late-model impeller bearing AL-N-1 for use in early-model applications.
Successful assembly requires the use of both AL-WA-2 stator cap/bearing adapter, and AL-N-1 bearing. Use of AL-90-3G eliminates the need to modify the standard impeller hub when adapting late-style bearings to early manufactured units. The journal diameter incorporates a super-hard surface band for increased durability.