Aggressive driving can cause the differential housing to crack. This is caused by the load from the powertain twisting the pinion shaft. The pinion moves off axis to the ring gear which creates a torsion force on the differential caps.
This reinforced housing adds stiff tool steel reinforced caps to the housing's carrier pillars. The pillars are machined to accept the reinforced caps allowing a high tolerance fit. Longer high strength fasteners are included.
Rigid distance piece is recommended to reduce the movement of the pinion shaft .
Blueprinted rear end rebuild service is available from ScienceofSpeed.