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CONDUCTOR'S SPECIAL 238A TRAIN HORN KIT HK-S4-238A

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Product Description

Our Conductor’s Special Kits are designed to give you the most out of your train horns, but that’s not all they can do! With our Conductor’s Special 238A train horn kit, you get a complete kit that can not only provide all the power you need for your horns but is already optimized for tire inflation!

Airing up anything from tires to inflatable toys has never been more convenient with our Conductor’s Special 238A train horn kit. We paired our weather-resistant 2-gallon tank with Viair’s 380C air compressor to bring you a constant duty system that can handle any light pneumatic jobs you can throw at it. While the Conductor’s Special 238A train horn kit is not as fast-filling as other systems, but it is a workhorse of an air system with a 100% duty cycle @ 100 PSI, still giving you a refill time of just under a minute.

Our Conductor’s Special 238A train horn kit is still a train horn kit at its core, sporting our most popular horns, our Shocker XL train horns. Giving you the raw power and volume of an authentic locomotive horn while being much more compact and easier to install than bigger train horn kits, our Conductor’s Special 238A train horn kit gives you a huge sound in a compact system.

Please note: The 6 horn upgrade kit does NOT include the extension brackets to connect to our STDK bracket or Shocker XL horn mount.


  • High-efficiency & Extremely Loud
  • Stainless Steel Diaphragms Won't Rust!
  • Manifold-less Design For Flexible Installation
  • All-inclusive Train Air Horn Solution!
  • Heavy Duty Compressor For Faster Fills!
  • All Standard Mounting Hardware
  • Max Honk Time: 5 to 7 Seconds
  • It can be heard from almost away!

  • Part Number: HK-S4-238A
  • Horn: Shocker 4 Train Horn Kit
  • Material: High-Impact ABS
  • Horn Measurements
    № 1 19.50″ (495.30 mm) № 2 16.25″ (412.75 mm)
    № 3 14.75″ (374.65 mm) № 4 12.75″ (323.85 mm)
  • Flare: 5″ (127 mm)
  • Weight: 4.5 lb (2.04 Kg)
  • Fitting Size: ⅛″ M NPT
  • Operating Pressure: 150 PSI
  • Tank: HornAir 2 Gallon Tank
  • Tank Length: 17″ (431.8 mm)
  • Tank Diameter: 6″ (152.4 mm)
  • Tank Height: 7″ (177.8 mm)
  • Tank Weight: 10 lb (4.54 Kg)
  • Compressor: Viair 380C Air Compressor
  • Average Fill Time: 1 Min 30 Sec
  • Voltage: 12 volts DC
  • Air Flow: 1.58 CFM at Free Flow
  • Max Amperage: 23 amps
  • Maximum Duty Cycle: 55% @ 100 PSI
  • Compressor Length: 9.0″ (223.2 mm)
  • Compressor Width: 4.0″ (101.6 mm)
  • Compressor Height: 6.75″ (171.5 mm)
  • Compressor Weight: 6.95 lb (3.15 Kg)

2-GALLON AIR TANK DIMENSIONAL DRAWING

PSI CFM A BAR LPM A
0 1.58 12 0 44.7 12
10 1.45 13 1.0 38.1 13
20 1.22 14 2.0 33.3 15
30 1.17 15 3.0 30.6 16
40 1.09 16 4.0 29.1 17
50 1.06 17 5.0 27.1 18
60 1.02 17 6.0 25.3 19
70 0.97 18 7.0 24.0 20
80 0.92 18 8.0 22.4 21
90 0.88 19 9.0 21.0 23
100 0.85 20 10.0 19.5 21
110 0.81 21 11.0 18.2 20
120 0.78 22 12.0 16.7 19
130 0.74 23 13.0 15.2 19
140 0.71 21 14.0 13.5 18
150 0.67 20
160 0.64 20
170 0.60 19
180 0.57 19
190 0.53 19
200 0.49 18

* Supply Voltage: 13.8 Volts

12-VOLT COMPRESSOR
2.0 GALLON TANK FILL RATE
0 to 150 PSI 2 min. 48 sec. (± 10 sec.)
110 to 150 PSI 1 min. 05 sec. (± 05 sec.)

* Supply Voltage: 13.8 Volts