Cylinder – GM (19176021)

Cylinder is a service part for the engine, transmission or driveline. Because several build codes can share the same external description, the part number is the only dependable match.

Replace the Cylinder when inspection shows wear, cracking or leakage that the surrounding components cannot explain. Rule out the cheaper causes first.

The Cylinder in this listing carries part number 19176021 and sits in the Pistons, Rings & Cylinders category. The number stamped on the original part is the only reliable cross-reference.

This is GM dealer-sourced stock rather than an equivalent, so the number on the Cylinder traces straight back to the manufacturer.