Will this mirror mount at the factory holes without drilling?

Yes — this mirror uses OEM mounting points. No drilling or body modification required.

How does the heating element work?

The heating element runs through the mirror glass. Wiring connects to a switch inside the cab; refer to your vehicle's service manual for proper integration into the electrical system.

Can I adjust the mirror angle while towing?

Manual mirrors let you pivot the glass up or down by hand. Make adjustments before driving — do not adjust while the truck is in motion.