400C is a 33% duty cycle compressor that works quickly and efficiently putting out 2.54 CFM flow at zero PSI head pressure. Features include a standard 1/4” NPT stainless steel braided leader hose with inline check valve and insulated wiring for simple installation. FEATURES – Check Valve – Vibration Isolators – Mounting Hardware – Stainless Steel Braided Leader Hose – Air Line for Remote Mount Air Filter – Remote Mount Air Filter Assembly – (2) Replacement Air Filter Elements – Installation Instructions SPECIFICATIONS – 12-Volt – Permanent Magnetic Motor – Duty Cycle: 33% @ 100 PSI – Max. Working Pressure: 150 PSI – Max. Air Tank Size: 5.0 Gallon – Max. 12V Amp Draw: 28 Amps – Ingress Protection Rating: IP67 – Dimensions: 9″L x 4″W x 6.75″H – Net Weight: 8.65 lbs. PERFORMANCE DATA 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 FILL RATES 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.)
Viair's 40040 400C Air Compressor Kit is built around their 400C model air compressor. Rated at 150 PSI, the 400C is a 33% duty cycle compressor that works quickly and efficiently putting out a massive 2.54 CFM flow at zero PSI head pressure providing a powerful foundation to build out an air compression system. The 400C features an oil-less, no maintenance design, with a gearless direct drive permanent magnetic motor, heavy duty PTFE piston ring and precision and high-speed durable bearings for increased piston and motor life. Additional parts provided with the kit include: mounting hardware, heavy duty mounting feet with vibration isolators, freeze-resistant wiring, remote mount air filter assembly, air line for remote mounting air filter, heavy duty terminals (spade connector, ring terminal) and more. .caption { font-family: Verdana, Helvetica neue, Arial, serif; font-size: 10px; font-weight: bold; font-style: italic; } ul.indent { list-style: inside disc; text-indent: -15px; } table.callout { font-family: verdana; font-size: 11px; line-height: 1. 3em; } td.vgoverview { height: 125px; background: #9DC4D8 url(https://images-na.ssl-images-amazon.com/images/G/01/electronics/detail-page/callout-bg.png) repeat-x; border-left: 1px solid #999999; border-right: 1px solid #999999; padding-left: 20px; padding-right: 20px; padding-bottom: 10px; width: 250px; font-family: verdana; font-size: 12px; }
150 PSI with a Massive CFM Flow
VIAIR 400C compressors are used at the center of a fully functional onboard air system and are rated to 150 PSI maximum working pressure with 33% duty cycle, meaning that the unit is able to be operated up to 15 minutes, and allowed to rest for 30 minutes thereafter before restarting (based on a 100 PSI, 72° Fahrenheit environment). Features include a standard ¼" NPT stainless steel braided leader hose with inline check valve and insulated wiring for simple installation.

150 PSI with a massive 2.54 CFM flow at zero PSI head pressure.
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Configurable for different uses, and easy to add system components.
. 400C Air Compressor Specifications
Motor voltage - 12 volt
Motor type - Permanent magnetic
Max. duty cycle: 33% @ 100 PSI
Max. working pressure - 150 PSI
Max. Amp draw - 29 Amps
Max. ambient temperature - 158°F
Min. ambient temperature - -40°F
CFM @ 0 PSI - 2.54
CFM @ 100 PSI - 1.34
Dimensions - 11.25"L x 4.00"W x 7.00"H
Net weight - 8.0 lbs
About Compressor Duty Cycle
Compressor duty cycle refers to amount of time a compressor can be operated in a given time period, at 100 PSI and at a standard ambient temperature of 72°F. Duty Cycle is commonly expressed in percentile as: compressor on time (compressor on time + off time) %. As an example, a compressor that is rated for 25% duty cycle means that compressor can be operated at: 100 PSI @ 72°F for 10 minutes on and 30 minutes off. 10 min. on / (10 min. on + 30 Min. off) = 10 min. / 40 Min = 25% duty cycle. 1-Year Limited Warranty
VIAIR Corporation warrants this product, when properly installed and under normal conditions of use, to be free from defects in workmanship and materials for a period of one (1) year from its original date of purchase. This warranty covers product defects only. It does not cover incidental or consequential damages as a result of misuse or abuse.
Fill Rates:
2.5 Gallon Tank 5.0 Gallon Tank 0 - 105 PSI 1 min. 27 Sec. 2 min. 55 sec. 85 - 105 PSI 17 sec. 35 sec. 0 - 145 PSI 2 min. 20 sec. 4 min. 50 sec. 110 - 145 PSI 48 Sec. 1 min. 40 sec.
What's in the Box
VIAIR 400C air compressor, mounting hardware (nuts, bolts, washers, locking washers), heavy duty mounting feet with vibration isolators, freeze-resistant wiring, remote mount air filter assembly (two spare elements), air line for remote mounting air filter, remote mount air filter fittings (2), heavy duty terminals (spade connector, ring terminal), check valve pre-installed in stainless steel braided leader hose, owner's manual.
Recommended Component Parts

Illuminated dash panel gauge (P/N 20062)
Tank port fittings kit (P/N 90005)
Locker fittings kit (P/N 90006)
Air source relocation kit (P/N 90007)
Pressure switch, 90/120 PSI (P/N 90100)
Pressure switch, 90/105 PSI (P/N 90101)
Pressure switch, 110/145 PSI (P/N 90102)
Pressure switch with relay, 85/105 PSI (P/N 90110)
Pressure switch with relay, 110/150 PSI (P/N 90111)
Pressure switch with relay, 85/105 PSI (P/N 90113)
HD sealed pressure switch, 110/145 PSI (P/N 90217)
HD sealed pressure switch, 90/120 PSI (P/N 90223)
40-amp relay (P/N 93940)
0.5 gallon air tank, 90/120 PSI (P/N 91005)
1.0 gallon air tank (P/N 91014)
2.0 gallon air tank (P/N 91020)
2.5 gallon air tank (P/N 91025)
5.0 gallon air tank (P/N 91050)
Inline pressure regulator (P/N 90150)
Compressor mounting bracket (P/N 95901)
About VIAIR Corporation
VIAIR offers the most complete line of air compressors and air accessories for both the on-and off-road markets available anywhere. VIAIR products are used in the OEM segment, 4x4 and Sport Air Suspension and have become the industry standard for both 12- and 24-volt automotive applications worldwide. Their compressors are currently being used in every corner of the globe, in the harshest climates imaginable and the company is recognized by its customers and peers alike as the leading manufacturer of high performance air compressors for mobile pneumatic applications.