My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Kleinn Horns GMHD-734 Complete Onboard Train Horn System for 2007-2019 GM HD Trucks

(2007-2019 Chevrolet Silverado 2500 HD; 2007-2019 Chevrolet Silverado 3500 HD; 2007-2019 GMC Sierra 2500 HD; 2007-2020 GMC Sierra 3500 HD)

Manufacturer

Picture for manufacturer Kleinn Horns

Part Number

GMHD-734
6 reviews
Sale Price

$1,479.95

In Stock (10)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Kleinn Horns GMHD-734 is a complete 100% bolt-on onboard train horn system engineered specifically for 2007-2019 GM 2500HD and 3500HD trucks (excluding single cab models). This vehicle-specific kit features direct-fit mounting brackets that require no cutting, welding, or drilling for a professional installation.

Complete System Includes:

  • Demon Model 730 train horn for authentic train horn sound
  • 6450RC high-output air compressor rated at 150 PSI with waterproof construction
  • Powder-coated steel 3-gallon air tank for sustained horn performance
  • Remote mount quick-connect tire inflator with storage bag for added utility
  • All necessary air lines, wiring, and mounting hardware

Performance and Upgrades:

  • Delivers powerful train horn sound output right out of the box
  • Upgradeable to even louder performance with optional P/N 6890 Ultra BlastMaster Valve Upgrade Kit
  • Vehicle-specific brackets ensure secure mounting and factory-like appearance

This comprehensive train horn kit provides everything needed for a complete, professional-grade installation on compatible GM heavy-duty trucks, combining authentic train horn performance with convenient tire inflation capability.

Products specifications

Fits

2007-2019 Chevrolet Silverado 2500 HD; 2007-2019 Chevrolet Silverado 3500 HD; 2007-2019 GMC Sierra 2500 HD; 2007-2020 GMC Sierra 3500 HD

Attribute 2

3.0 gallon US made air tank, all steel construction, Cortec internally coated against corrosion. Manufactured to SAE J10 and FMVSS 121 standards

Attribute 4

Model-specific brackets for air system, horn and horn support included

Attribute 3

150 PSI rated system with 6450RC air compressor

Attribute 1

Features Model 730 triple spun steel black train horn

Attribute 5

Tire inflation kit included

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Very quick - very easy!

so far so good every thing was just as it should be - good work

So far all is good.

easy shopping.

Good so far!

Very easy purchasing process!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy