Lower Panel – GM (42821657)

This is a lower panel from GM, factory part number 42821657. It is catalogued under Covers & Caps > Panels & Plates.

• Inspection covers are usually the first thing removed and the last thing reordered, which is why a missing cover often shows up as a rattle rather than a leak.
• Where a cover sits against a painted panel, a slight shade difference is normal on service parts supplied primed rather than finished.
• Plastic covers harden with heat cycles, so a cover that has been on the vehicle for a decade often cracks at the screw bosses when refitted.

Corrosion at a mounting face is worth cleaning back before fitting anything new, because a part that sits on scale will work loose.

The part number is the thing to verify. Where the old part carries no legible number, a VIN and a photograph are enough for us to identify it. Dispatched from our US warehouse within one to two business days, with free shipping over $59.