Derrick's 2015 Ford Expedition with 4-Chime Air Horn Kit train horn install exterior photo 1

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Featured Install

4-Chime Air Horn Kit

Derrick's 2015 Ford Expedition

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Owner Derrick

Year 2015

Vehicle 2015 Ford Expedition

Derrick S. has officially upgraded his 2015 Ford Expedition with the HornBlasters 4-Chime Air Horn Kit, delivering a loud, commanding presence that completely transforms the vehicle’s sound profile. The kit was mounted cleanly on the vehicle for a stealthy setup that still maximizes output when it’s time to let it rip—far louder than the factory horn without needing a full multi-gallon train horn stack.

This installation places the 4-Chime Air Horn Kit in a practical underbody/chassis location, keeping components secure and out of sight while maintaining full performance and accessibility. The package is a complete HornBlasters system: Rage 4-chime air horns with a pre-installed 1/4″ electric valve, a pre-plumbed and pre-wired air source (compact 3-liter combo or weather-sealed 1.5-gallon 127H, depending on the configurator tier), wiring, fittings, and hardware. Both tiers run at 120 PSI with 90 PSI restart and make their own air on demand.

Derrick’s build showcases how well the HornBlasters 4-Chime Air Horn Kit integrates into a full-size SUV platform like the Ford Expedition, giving it a true train-horn experience with a clean, professional finish. On the product page, choose Non-Weather Resistant (HK-4CHIME-M3, ~4–5 seconds of honk) for the compact 3-liter kit, or Weather Resistant (HK-4CHIME-127H, ~6–7 seconds) when you want longer honks and a weather-sealed compressor—especially relevant for chassis-exposed layouts like Derrick’s.

Feature Highlights

4-Chime Air Horn Kit: Rage 4-chime horns plus a complete onboard air system in one box
This 2015 Ford Expedition install: stealth underbody/chassis mounting that keeps components secure, accessible, and out of sight
Pre-installed 1/4″ electric valve and pre-plumbed/pre-wired air source—straightforward install, not a parts puzzle
Two air-system tiers: compact HK-4CHIME-M3 (3-liter, ~4–5 sec) or weather-sealed HK-4CHIME-127H (1.5-gallon, ~6–7 sec)
HornBlasters lists 120 PSI / 90 PSI restart and about 35 seconds to recover from 90–120 PSI—ideal for a full-size SUV daily driver

HornBlasters Shocker S6 544K Nightmare Edition Train Horn Kit

PRODUCT

PRICE

Sold out

UP TO 1500% LOUDER

UNLIMITED HONKING

ZERO
DELAY

CAPABLE ONBOARD AIR SYSTEM

4-CHIME PRESENCE FOR YOUR EXPEDITION

The 4-Chime Air Horn Kit delivers the same commanding multi-chime upgrade Derrick S. showcased on his 2015 Ford Expedition. Select Non-Weather Resistant or Weather Resistant on the product page, plan your underbody or enclosed mounting carefully, then follow HornBlasters’ instructions so warranty coverage stays intact.

SPECIFICATIONS

Part Number	HK-4CHIME-M3
Operating Pressure	120 PSI
Restart Pressure	90 PSI
Voltage	12-Volt DC
Horn Length	13.5" (342.9 mm)
Horn Width	13.25" (336.55 mm)
Horn Height	4.25" (107.95 mm)
Horn Weight	1.7 lb (0.77kg)

Air Source Kit	AC-M3 3 Liter Compressor and Tank Combo
Air Source Length	16.535" (420mm)
Air Source Width	4.921" (125mm)
Air Source Height	7.086" (180mm)
Air Source Weight	11.2lbs (5.08kg)
Max Amperage	18 Amps

FILL RATES

3-LITER AIR TANK	FILL RATE
0 to 120 PSI	2 min. (± 10 sec.)
90 to 120 PSI	35 sec. (± 05 sec.)

Frequently Asked Questions

The 4-Chime Air Horn Kit is a complete HornBlasters package: Rage 4-chime air horns, a pre-assembled air source, pre-installed 1/4″ electric valve, air line, wiring with fuse holder, toggle switch, relay, fittings, mounting hardware, and instructions. Derrick S.’s 2015 Ford Expedition uses that turnkey recipe for a stealth chassis install and a commanding upgrade over the factory horn.

Derrick’s layout is underbody/chassis, so exposure to weather and road debris matters. HornBlasters’ Weather Resistant tier (HK-4CHIME-127H, ~6–7 seconds of honk) adds a weather-sealed compressor and larger 1.5-gallon tank. The compact Non-Weather Resistant 3-liter kit (HK-4CHIME-M3, ~4–5 seconds) is best kept upright in an enclosed space away from moisture. Both options are on the 4-Chime Air Horn Kit configurator.

Derrick’s Expedition keeps the system secure under the vehicle for a clean, out-of-sight look with full accessibility. For the Non-Weather Resistant 3-liter combo, HornBlasters recommends mounting the tank/compressor upright in an enclosed space away from moisture, dirt, and debris— failure to follow that guidance can void the warranty. If you need a fully chassis-exposed layout, lean toward the Weather Resistant option and still protect wiring, fittings, and the drain port.

HornBlasters lists 120 PSI operating pressure, 90 PSI restart, and about 35 seconds to recover from 90–120 PSI on the 4-Chime Air Horn Kit product page. The 3-liter tier is roughly 4–5 seconds of honk with about 2 minutes for a 0–120 PSI fill; the 127H Weather Resistant tier stretches honk time to about 6–7 seconds. Always re-read the live spec tables before ordering.

No. HornBlasters warns that separating the compressor from the tank voids the warranty on this kit. If you need a detached-compressor layout, their guidance points you toward 232 and higher models—see the warning on the 4-Chime Air Horn Kit product page.

SHARE YOUR HORNBLASTERS SETUP

Running a 4-Chime kit, 2-Chime, Safety Horn, or another HornBlasters system on your Expedition or SUV? We’d love to see it. Submit photos and details of your installation for a chance to be featured in our install gallery.

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