Locking Differential Thrust Block – GM (12471571)

Locking Differential Thrust Block is a replacement component matched to the powertrain it was built for rather than to a vehicle model in general. The number on the original part is the most reliable ordering reference.

Replace the Differential Thrust Block when the symptom traces back to this component after the surrounding circuit has been checked. Confirm the number against the original before ordering.

For this Differential Thrust Block the reference is 12471571, in our Differentials range. Compare it with the number on the part you are replacing rather than with a photograph.

The stock here is genuine GM, and this Differential Thrust Block keeps the original engineering number, which matters once a number has been superseded more than once.