TRAIN HORNS / RELATED — 2003–2007 DODGE RAM 5.9L CUMMINS

Get heard. Build a reliable train horn setup for your 3rd Gen Ram with proven Kleinn horns, heavy-duty 12V compressors, and properly sized air tanks. Every item below fits universal or Ram-friendly mounting and is curated for 2003–2007 5.9L Cummins trucks.

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Shop by Component

• Complete Horn Kits
  • Kleinn HK6 — Chrome Triple Train Horn (kit)
  • Kleinn Horns — Brand Hub (horns, valves, switches)
  • Kleinn 99 — Compact Dual Horn (space-saving option)
• Compressors (12V, Continuous-Duty)
  • Pacbrake HP10628 — HP625 12V Compressor Kit
  • Pacbrake HP10629 — HP625 Premium 12V Compressor
  • Pacbrake HP10142 — HP325 12V Compressor Kit
• Air Tanks (Choose Capacity)
  • Pacbrake HP10050 — 2.5 Gallon Tank Kit
  • Pacbrake HP10051 — 5 Gallon Tank Kit
  • Viair 91028 — 2.5 Gallon, 200 PSI Tank
• Controls, Switches & Accessories
  • Kleinn 320 — “Terminator” Flush-Mount Push Button
  • Kleinn 333 — Sniper Remote Horn Button

Why Buy Train Horn Gear from CPP Diesel?

• Curated for 03–07 Ram: Universal components that mount cleanly on 3rd gen frames, beds, or behind bumpers.
• Reliable duty cycles: Compressors and tanks sized to keep blasts consistent without overheating.
• Straightforward installs: Kits and accessories that simplify wiring, plumbing, and mounting.

Tech Notes & Fitment Tips

• Tank sizing: 0.5–1.0 gal works for short chirps; 2.5–5 gal supports longer blasts and faster recovery.
• Compressor choice: For frequent use, pick a continuous-duty 12V unit (HP625/HP325 families) and mount away from heat.
• Plumbing: Use quality push-lock or braided line, add a drain for condensation, and secure lines away from the driveline/exhaust.
• Electrical: Trigger horns with a fused relay and a dedicated switch or remote; follow the product’s amp draw specs.
• Legal use: Train horns can be off-road/show use only in some areas—know and follow your local laws.

Frequently Asked Questions

What size air tank should I run?

For the loudest, sustained blasts, go 2.5–5 gallons (see HP10050 2.5 gal, HP10051 5 gal, or Viair 91028).

Do I need a continuous-duty compressor?

Yes if you plan to use the horn often. Choose a 12V unit like HP10628 HP625 or HP10142 HP325 for reliable recovery between blasts.

Where do these horns mount on a 3rd gen?

Popular locations include under-bed crossmembers, behind the front bumper, or along frame rails. Keep trumpets pointed down to shed water, and mount tanks/compressors away from heat and road debris.

Can I tie my horn button into the factory horn?

Most builders use a dedicated push button or remote (Kleinn 320, Kleinn 333) via a relay so the OEM horn still works normally.

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