Viair 400C Air Compressor

(Fast Fill – 150 PSI / 2.62 CFM)

AC-400C

Rated 5.0 out of 5
2 Reviews

Add Viair Air Compressor Bracket Tooltip
The Viair Air Compressor Bracket will allow you to mount your compressor upright and is compatible with Viair Compressor models 275C-485C.
addons
+$21.95
Add 110-150 PSI Pressure Switch with 40A Relay Tooltip
This Pressure Switch will automatically turn your compressor on when the pressure in your air tank falls below 110 PSI and turn it off when the pressure reaches 150 PSI.
addons
+$27.25
Add Cooling Fan Isolator Kit Tooltip
Isolate your Compressor, drastically cutting down on vibration, allowing your compressor to run quieter & cooler, & extending the duty cycle up you 25%!
addons
+$69.50
Add Gold Level Extended Warranty See price in cart
Add Platinum Level Extended Warranty See price in cart

Looking for one of the fastest compressors you can buy? Check out the speed demon Viair 400C Air Compressor, the fastest-filling compressor in its class and the centerpiece in many of our best train horn kits. This compressor produces a stunning  2.62 CFM while pulling no more than 28 amps of power, giving you a lighting-fast recharge time. The Viair 400C can recharge a 2.5-gallon tank from 110-150 PSI in a ridiculously fast 48 seconds and recharge a 5-gallon tank in just over 1 minute and 40 seconds. With speeds this fast, this is the go-to compressor for train horns and air horns, but it also has the ability to do some light tire inflation in case of emergency. 

The Viair 400C Air Compressor comes complete with a remote mountable intake filter assembly, or “Air Snorkel Kit”, allowing the air intake to be moved to use clean air even if the compressors are mounted in the way of debris, moisture, and other air system contaminants. Includes a standard 1/4″ NPT stainless steel braided leader hose with check valve and insulated wiring for fast installation.

The Viair 400C Air Compressor is featured in the Horn Kits listed below:

Conductor's Special 240 Conductor's Special 540
Nathan Airchime K3 540 Nathan Airchime K5LA 540
Nathan Airchime K5HA 540 Nathan Airchime P3 540
Nathan Airchime P5 540 King 5 540
King 6 540 Katrina 540
Admiral 540 - HornAir 540

This compressor does come with the option to add our 40 Amp Air Compressor Wiring Kit to it as well!

Note: Use thread sealant for proper installation. Thread tape is not recommended. Properly sealed, recommended torque for 1/8″ is 10 ~ 11 ft. lbs. Recommended torque for 1/4″ and 3/8″ is 12 ~ 15 ft. lbs.

PSI CFM A BAR LPM A
0 2.62 16 0 74.0 16
10 2.39 18 1.0 65.0 20
20 2.21 20 2.0 60.0 23
30 2.11 22 3.0 56.0 25
40 2.01 24 4.0 53.0 27
50 1.93 25 5.0 49.0 28
60 1.84 26 6.0 46.0 28
70 1.73 27 7.0 42.0 28
80 1.65 27 8.0 38.0 28
90 1.52 27 9.0 35.0 27
100 1.45 27 10.0 31.0 27
110 1.35 27
120 1.26 27
130 1.19 27
140 1.08 27
150 1.01 26

 * Supply Voltage: 13.8 Volts

2.5 GALLON TANK FILL RATE
0 to 105 PSI 1 min. 27 sec. (± 05 sec.)
85 to 105 PSI 21 sec. (± 03 sec.)
0 to 145 PSI 2 min. 20 sec. (± 05 sec.)
110 to 145 PSI 48 sec. (± 03 sec.)
5.0 GALLON TANK FILL RATE
0 to 105 PSI 2 min. 55 sec. (± 10 sec.)
85 to 105 PSI 45 sec. (± 05 sec.)
0 to 145 PSI 4 min. 50 sec. (± 10 sec.)
110 to 145 PSI 1 min. 40 sec. (± 05 sec.)

* Supply Voltage: 13.8 Volts

  • Permanent Magnetic Motor
  • Oil-less Design
  • High-Performance PTFE Piston Ring
  • Stainless Steel Valves
  • Moisture & Dirt Resistant 
  • Gearless Direct Drive Motor
  • Anodized Aluminum Alloy Cylinder
  • Automatic Reset Thermal Overload Protector
  • Mounting Plates with Vibration Isolators
  • Stainless Steel 1/4" Braided Leader Hose
  • Remote Mountable Intake Filter Assembly
  • Insulated Wiring with Connectors
  • Viair 400c Air Compressor
  • 1/4" NPT Braided Leader Hose & Check Valve
  • Remote Mountable Two-Stage Air Filter
  • Replacement Filter Elements
  • 1 Year Manufactures Defect Warranty
  • Mounting Hardware
  • Part Number: AC-400C, AC-400K
  • Manufacturers Part Number: 40040, 40048
  • Voltage: 12 Volts DC
  • Max Amperage: 28 Amps
  • Maximum Duty Cycle: 33% @ 100 PSI
  • Maximum Pressure: 150 PSI
  • Max Tank Size: 5 Gallons
  • CFM @ 0 PSI: 2.62 CFM
  • Length: 9″ (228.6 mm)
  • Width: 4″ (101.6 mm)
  • Height: 6.75″ (171.5 mm)
  • Weight: 6.95 lb (3.15 Kg)
  • Money-Back Guarantee/Refund Policy
    All merchandise unless otherwise indicated may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns. A 15% restocking fee may apply. Additional deductions may be made to reflect the products current market value. These terms apply to all refunds. Most products are shipped with a refund/replacement guarantee period unless otherwise noted in the product listing. Customers must inform HornBlasters.com of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
  • Warranty
    This product is backed with a 1 Year Manufactures Defect Warranty!
  • HornBlasters.com Satisfaction Guarantee
    HornBlasters.com offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
  • Cross-Shipments
    HornBlasters.com will not cross-ship returned merchandise.
  • Physical Damage Policy
    Physical damage to any product purchased at HornBlasters.com will effectively void warranty coverage. Physical damage includes but is not limited to improper handling and/or any other type of damage sustained by irregular usage.

Warnings & Notices

Safety warning icon
Warning

This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

average rating 5.0 out of 5
Based on 2 reviews
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100% of reviewers would recommend this product to a friend
2 Reviews
Reviewed by Derek R.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Best price and fastest shipping

Purchased the Viair 400C in stealth black to replace my old worn out Viair 400C. I swear this compressor is faster and a hell of a lot quieter than my original one.

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Reviewed by Nelson L.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Great service

Absolutely love these guys! I bought the Viair 400c to add to my Conductor Special,(faster fill times) Arrived in Canada three days from ordering. Even with Duty fees it was cheaper than local sources. Install was quick and simple, pics to follow. Having a blast!

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