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4R44E, 4R55E, 5R44E, 5R55E, A4LD

Low Sprag Inner Race
Part No. 56600B

4.0L (2.70" race diameter)


View Instructions

Sonnax low sprag inner race 56600B for Ford 4R44E, 4R55E, 5R44E, 5R55E and A4LD units is made of through-hardened AISI 52100 steel with longer, deeper cutting serrations to ensure a tight fit after installation.

Sonnax drill jig 56600-DJ is required to install this part. The jig allows for easy disassembly and installation of the inner race and eliminates the risk of damaging the case.

  • 56600b