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Viair 45043 Automatic Function Portable Compressor

by VIAIR
4.7 out of 5 stars 383 ratings
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Amazon's Choice for "viair 450p-rv"

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  • 12 VOLT - 150PSI Max Working Pressure, engine must be running during use.
  • 1.80CFM Free Flow @ 0 PSI. Air Hose: 35 feet. Ingress Protection Rating is IP54
  • Reads pressure on the fly with easy-to-use tire inflation gun, and includes an automatic shutoff function that powers down the unit when the compressor is turned on, but not actively filling tires
  • Quick connect inflation hose with tire inflation gun and rubber over mold pressure gauge. Direct heavy-duty dual battery clamps with 40-amp inline fuse
  • Includes deluxe carry bag anti-vibration tray and more
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Sold By Amazon.com KINCREA VM Express Amazon.com Amazon.com Amazon.com

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Product information

Technical Details

Technical Specification

Additional Information

Warranty & Support

Product Warranty: For warranty information about this product, please click here [PDF ]

Product description

Product Description

The VIAIR 450P Automatic Function Portable Air Compressor is the only 100-percent duty cycle portable compressor on the market, and can run for extended periods of time depending on your environment. Its automatic pressure regulation system is designed to maintain an internal tank pressure of 145 PSI by cycling power to the compressor motor. This compressor is also equipped with a detachable gas-station-style inflation gun, which allows you to easily fill tires with a simple squeeze of the handle. This inflation gun can also show current tire pressure, so you don't need an additional pressure gauge.

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The 450P Automatic is VIAIR's first Automatic shutoff function portable compressor and is rated for use with most any size tire. Powered by an easy-to-establish temporary connection to a 12-volt battery power source, this 100% duty cycle unit is capable of pressures up to 150 PSI continuously without the need to be rested. The 450P Automatic comes with a range of accessories stowable in its soft carry case, including a convenient close-ended gas station-style air gun.

VIAIR logo
Portable Auto Compression at 150 PSI with a 100% Duty Cycle
The VIAIR 450P-Automatic Portable Compressor offers inflation of virtually any size tire, and operation at up to 150 PSI without the need to rest the unit. More than just a compressor, the 450P is a complete portable compression system, coming complete with an inflation gun with 200 PSI air pressure gauge, a 25' extension hose with quick connect coupler and lever chuck, a heavy duty sand tray with vibration isolators, a 8' power cable, a heavy-duty sand tray with vibration isolators, a 3-piece inflation tips kit, an inline fuse holder, a deluxe zippered carry bag and dual heavy duty direct battery clamps. The convenient battery clamps allow you to quickly utilize any 12-volt power source, including your own vehicle's battery, to address your air compression needs in seconds.

VIAIR 450P Automatic Portable Compressor in packaging
Portable automatic air compression up to 150 PSI suitable for 37" tires and larger.
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VIAIR 450P Automatic Portable Compressor with included accessories
All your compression needs are in the bag.
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VIAIR 450P Automatic Portable Compressor with included vibration resistent tray
Heavy duty tray included for vibration control.
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The 450P also contains a convenient automatic time and power-saving features. The unit comes with an automatic shutoff function that will power down the 450P when the compressor is turned on, but not actively filling tires - making it unnecessary to turn the unit off between tire fills. In addition, the included closed-ended tire inflation gun allows for on-the-fly tire pressure reading, without having to turn the unit off to check tire pressure.

450P Air Compressor Specifications

  • Motor voltage - 12 volt
  • Motor type - Permanent magnetic
  • Max. duty cycle: 100% @ 100 PSI
  • Max. working pressure - 150 PSI
  • Max. Amp draw - 20 Amps
  • Max. ambient temperature - 158°F
  • Min. ambient temperature - -40°F
  • CFM @ 0 PSI - 1.66
  • CFM @ 100 PSI: 0.94
  • Built-in pressure switch - 120 PSI on, 145 PSI off
  • Fuse - 30 Amps
  • Auto. Reset thermal protection - Yes
  • Dimensions - 12.75"L x 4.00"W x 7.00"H
  • Net weight - 9.75 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.

Fill Rates:

 
31" x 10.5"
33" x 12.5"
35" x 12.5"
37" x 12.5"
0 - 30 PSI
4 min. 05 sec.
5 min. 30 sec
6 min. 55 sec.
7 min. 56 sec.
15 - 30 PSI
2 min. 10 sec.
2 min. 50 sec.
3 min. 30 sec.
4 min. 09 sec.

What's in the Box
  • 1-VIAIR 450P portable air compressor
  • 1-Deluxe zippered carry bag with storage compartments
  • 1-Gas station style inflation gun with 200 PSI air pressure gauge
  • 1-25' extension hose with quick connect coupler and lever chuck
  • 1-Heavy duty sand tray with vibration isolators
  • 1-Set of dual heavy duty direct battery clamps
  • 1-8' power cable
  • 1-3 piece inflation tips kit
  • 1-Inline fuse holder
  • 1-Owner's manual
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.

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.

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From the manufacturer

VIAIR 300P VIAIR 400P VIAIR 400P-Auto VIAIR 440P VIAIR 450P-Auto
Max Pressure 150 PSI 150 PSI 150 PSI 150 PSI 150 PSI
Duty Cycle 33% at 100 PSI 33% at 100 PSI 33% at 100 PSI 33% at 100 PSI 100% at 100 PSI
CFM Output 2.3 CFM 2.3 CFM 2.3 CFM 3.0 CFM 1.8 CFM
Max Tire Recommended Tire Size 33" 35" 35" 37" 42"
Automatic?
Max Amp Draw 30 Amps 30 Amps 30 Amps 44 Amps 23 Amps

Customer Questions & Answers

Customer reviews

4.7 out of 5 stars
4.7 out of 5
383 customer ratings
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Reviewed in the United States on January 12, 2018
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40 people found this helpful
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Reviewed in the United States on April 11, 2017
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26 people found this helpful
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Reviewed in the United States on August 14, 2017
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Top international reviews

SAMARTIC
4.0 out of 5 stars GOOD PRODUCT
Reviewed in Canada on December 14, 2019
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Les
5.0 out of 5 stars Essential for out of town travel, holidays!
Reviewed in Canada on February 1, 2020
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Jandoraa
4.0 out of 5 stars Love it!
Reviewed in Canada on November 12, 2017
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BG12
5.0 out of 5 stars Very capable compressor.
Reviewed in Canada on October 15, 2019
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Randy Blackwell
5.0 out of 5 stars Use this all the time on my 4Runner. Takes ...
Reviewed in Canada on May 3, 2016
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2 people found this helpful
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Rick Muchowski
5.0 out of 5 stars Reliable Quality
Reviewed in Canada on March 21, 2016
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3 people found this helpful
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Amazon Customer
5.0 out of 5 stars Great unit
Reviewed in Canada on June 25, 2019
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Karim
4.0 out of 5 stars Great compressor, but faluty bag
Reviewed in Canada on April 21, 2017
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3 people found this helpful
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Brian9 B.
4.0 out of 5 stars Worth the money
Reviewed in Canada on December 12, 2013
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2 people found this helpful
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Brad
5.0 out of 5 stars Delivered as promised
Reviewed in Canada on August 11, 2013
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4 people found this helpful
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Edward Wood
5.0 out of 5 stars Five Stars
Reviewed in Canada on February 3, 2018
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jason horne
5.0 out of 5 stars Five Stars
Reviewed in Canada on March 2, 2018
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Brian L Hunt.
5.0 out of 5 stars Viair 450P Automatic Function Portable Compressor
Reviewed in Canada on May 16, 2014
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michel lafleche
5.0 out of 5 stars VIAIR 450P
Reviewed in Canada on June 9, 2014
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glen
5.0 out of 5 stars i am very happy with the
Reviewed in Canada on August 24, 2015
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