SKU: 26416972551

Viair 400P-Automatic Portable Air Compressor

Sale price$134.97 Regular price$149.97
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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24

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Description

Viair 400P-Automatic Portable Air Compressor400P Automatic is VIAIRs first Automatic shut off function powerful portable tire inflator. This 33% duty cycle unit is capable of pressures up to 150 PSI and can be operated for up to 40 minutes at a time before needing to be rested (at up to 40 PSI). The 400P Automatic comes with a close ended gas station style air gun for added convenience. Portable compressors with automatic shutoff come into play when moving from tire to tire, and when checking

400P-Automatic is VIAIR’s first Automatic shut-off function powerful portable tire inflator. This 33% duty cycle unit is capable of pressures up to 150 PSI and can be operated for up to 40 minutes at a time before needing to be rested (at up to 40 PSI). The 400P-Automatic comes with a close-ended gas station-style air gun for added convenience.

Portable compressors with automatic shutoff come into play when moving from tire to tire, and when checking tire pressure in the middle of a tire fill. A typical portable compressor must be turned off between tire fills, and anytime you want to check tire pressure. If you aren’t near the compressor, this can turn into running laps back and forth to the portable compressor to turn the unit on and off. Automatic portables do not work in this fashion and will save you time & effort to get tires inflated quickly.

Features:

  • Gas Station-Style Tire Inflation Gun with 160 PSI Gauge
  • Thermal Overload Protector
  • Automatic Shut-Off Function
  • Quick Connect Air Hose with Heat Shield
  • Vibration-Resistant Diamond-Plate Sand Tray
  • Deluxe Dual Compartment Carry Bag
  • 40-amp Inline Fuse Holder
  • Dual Battery Clamps
  • 3 pc. Inflation Tips Kit

Specifications:

  • 12-Volt
  • Permanent Magnetic Motor
  • Duty Cycle: 33% @ 100 PSI
  • Max. Working Pressure: 150 PSI
  • Max. 12V Amp Draw: 30-Amps
  • Ingress Protection Rating: IP54
  • Dimensions: 10.87″L x 5.83″W x 7.48″H
  • Max Ambient Temp: +158°F
  • Min Ambient Temp: -4°F
  • Net Weight: 10.70 lbs.
  • Power Cord Length: 8 ft.
  • Air Hose Length: 30 ft.

P/N 40043

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 26416972551

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4.3 ★★★★★
Based on 24 reviews
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phala riffel
Belleville, US
★★★★★ 5
Comfortable shoes
Size: 10.5, Color: Black
Fit well Look great Get compliments all the time
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
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Verified Purchase
Larry
Dallas, US
★★★★★ 5
Good value for the money.
Size: 9.5 Wide, Color: Beige
Comfortable right out of the box. Great style and well made. The more you wear the softer they get but maintain their overall appearance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
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Verified Purchase
Amazon Customer
Draper, US
★★★★★ 5
Very good quality for a reasonable price.
Size: 10, Color: Grey
Very good quality, very soft, very comfortable, look amazing, I’m very happy.
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Reviewed in the United States on May 23, 2026
M
Verified Purchase
Mike L.
Waukegan, US
★★★★★ 4
Comfortable fit for slip-in fabric shoes
Size: 14, Color: Black/Black
My first experience with Marc Joseph. I typically purchase dress and casual work shoes from Florsheim and occasionally Rockport. I'm giving these four stars because the initial fit and feel appear solid. Depending on the shoe brand I wear a size 14 or 15. My feet are slightly wide but I don't alway need wide fit. These size 14 fit well with wide enough toe box. I've tried slip in shoes before and they just don't feel right. These somehow work and there is no heel slip. My only reservation is the high lip on the heel for slip-in and hope they dont catch pant hems. I gave 4 stars because I'll have to determine durability. Granted they are a light fabric shoe with a soft rubber tread. I'd like them to last for at least 6 months..and use them for business casual work wear during warm weather.
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Reviewed in the United States on May 19, 2026
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Verified Purchase
Chris
Carnegie, US
★★★★★ 5
Stylish and comfortable.
Size: 8 Wide, Color: Black/Black
Shoes look great and fits well. Definitely recommend pocking another pair.
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Reviewed in the United States on May 10, 2026

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