Air Horns & Onboard Air
Air Horns and the Compressors Behind Them
A real air horn is not a louder version of a factory horn, it is a separate system. A compressor fills a tank, the tank feeds the horn, and a gauge tells you where you stand. Most of what is here comes from Kleinn Automotive Accessories, sold as pieces so you can build the setup you want.
Find Parts for Your Vehicle
Measuring your bed
Put a tape measure inside the bed, from the inside of the bulkhead (front wall) to the inside of the closed tailgate. Round to the nearest inch — a 69" measurement is a 5'8" bed.
Bed length is measured inside the box, not along the outside of the truck.
Still unsure? Leave it blank to see every length that fits your truck, or call 888-865-4024.
Kleinn covers the horns themselves, air compressors and gauges. Because the parts list separately, you can start from scratch or add to what is already on the truck, whether that is a bigger air source or a gauge you can actually read at night.
Onboard air earns its place beyond the horn. The same tank that blows a horn will air a tire back up after a trail run or blow the dust out of a filter. You will also find air components here from Firestone Ride-Rite, Rough Country and Smittybilt, plus single items from Bilstein and Fabtech.
Mounting matters more than people expect. A compressor needs somewhere dry, a tank needs somewhere it will not get hit, and the horn needs room to point where the sound will do some good. Installation is available at all 22 of our stores.
Common Questions
What do I need for a complete air horn setup?
Three things at minimum: the horn, an air source to feed it, and the plumbing and controls in between. Kits bundle those together. Buying the pieces separately lets you size the compressor and tank for whatever else you want air for. If the truck already has onboard air for air springs or tires, you may only need the horn and a line to it.
Is onboard air only for the horn?
No, and for a lot of owners the horn is the excuse. A tank on the truck airs tires back up at the end of a trail, blows a filter clean, and saves a stop at a gas station machine that never seems to work. Size the compressor and tank for the job you actually want them doing, not just for the horn.
Will this fit my truck?
Air systems are more about space than about model. You need somewhere for the compressor, the tank and the horn where none of them are sitting against the exhaust or hanging down into the road. Check the listing for your vehicle where one is given, and if you are unsure, bring the truck by a store and let someone look underneath.