Robert's 2007 Hummer H2 now carries the same three-chime roar as a freight locomotive after installing a Nathan AirChime K3 Train Horn. Mounted along the frame rail, the reconditioned aluminum horns deliver a thunderous chord that matches the H2's size and attitude.
The horns connect to a half-inch valve and supply line so the H2's onboard air system can feed them plenty of volume. A 5-gallon tank and 150 PSI compressor combo keep the K3 ready for long blasts while still supporting tire inflation and air tool use.
Each K3 horn was sandblasted, powder-coated, and fitted with new stainless diaphragms before installation, giving Robert authentic railroad tone with fresh hardware. The result is a Hummer that sounds as bold as it looks every time the horn button is pressed.
Feature Highlights
- Nathan AirChime K3 three-chime horn sourced from retired locomotives
- Reconditioned with fresh powder coat and stainless steel diaphragms
- Half-inch NPT valve and supply line deliver full airflow for maximum output
- Paired with a 5-gallon, 150 PSI onboard air system for repeated blasts
- Perfect sonic upgrade for the big stance and presence of the 2007 Hummer H2
MAKE YOUR HUMMER SOUND LEGENDARY
Outfit your own H2 with a reconditioned Nathan AirChime K3 to get the same authentic railroad tone and commanding presence that Robert’s build delivers every time he hits the horn.












