Dimension - 3.8" x 0.10"
 
Spring Return Difft Lock Cable
What it is: A spring differential lock cable is likely part of a differential lock system in vehicles, particularly off-road or heavy-duty vehicles like trucks or 4x4s. The differential lock ensures both wheels on an axle rotate at the same speed, improving traction. The "spring" in this context could refer to a component within the differential lock mechanism, such as a spring that engages or disengages the lock, or a spring-loaded cable that controls the locking mechanism.
Function: The spring may assist in returning the lock to a default position (engaged or disengaged) or maintaining tension in the cable that activates the differential lock.
Relevant Information: Web results mention differential lock springs available at retailers like Advance Auto Parts and JEGS, often for specific differential types (e.g., Dana 28, Dana 44, or Ford 8.8 Trak-Lok). For example, Yukon Gear offers spring kits for Dana differentials, and Ford 8.8 Trak-Lok springs are noted for 31-spline setups.
Possible Application: Used in automotive differentials to ensure reliable locking/unlocking.