Differential Pinion Shaft
PowerTrax pinion shafts are made with Zytanium, an aerospace grade steel that is processed to proprietary specifications. Zytanium shafts are typically 50% stronger than original differential components and up to 65% stronger than titanium.

3991065REO Application Notes
Warranty
1 Year or 50,000 Miles
3991065REO Specifications
App Model
GM 8.2
Part Number – Old
CS1940
Taxonomy A
LD Differential, LD Differential, LD Differential
Taxonomy B
Lock-Right Rebuild Components, Lock-Right Rebuild Components, Lock-Right Rebuild Components
Taxonomy C
Cross Pins/Cross Shafts, Cross Pins/Cross Shafts, Cross Pins/Cross Shafts
Used In Lock Right Units
1940-LR