---
product_id: 674514061
title: "VIAIR 400P-A EF Enhanced Flow - 40145 Automatic Tire Inflator Portable Offroad Air Compressor for Truck & SUV | 12V On/Off Road Tire Pump Air Compressor | 150 PSI (SAE, Alligator Clips)"
brand: "viair"
price: "21509709₫"
currency: VND
in_stock: true
reviews_count: 11
category: "Viair"
url: https://www.desertcart.vn/products/674514061-viair-400p-a-ef-enhanced-flow-40145-automatic-tire-inflator
store_origin: VN
region: Vietnam
---

# 0.48 HP motor power Compact & portable design 10% faster fill rate VIAIR 400P-A EF Enhanced Flow - 40145 Automatic Tire Inflator Portable Offroad Air Compressor for Truck & SUV | 12V On/Off Road Tire Pump Air Compressor | 150 PSI (SAE, Alligator Clips)

**Brand:** viair
**Price:** 21509709₫
**Availability:** ✅ In Stock

## Summary

> 🚙 Pump Up Your Off-Road Game with Precision & Power!

## Quick Answers

- **What is this?** VIAIR 400P-A EF Enhanced Flow - 40145 Automatic Tire Inflator Portable Offroad Air Compressor for Truck & SUV | 12V On/Off Road Tire Pump Air Compressor | 150 PSI (SAE, Alligator Clips) by viair
- **How much does it cost?** 21509709₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/674514061-viair-400p-a-ef-enhanced-flow-40145-automatic-tire-inflator)

## Best For

- viair enthusiasts

## Why This Product

- Trusted viair brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Tire Revival:** Inflates 35" tires from 10 to 40 PSI in under 5 minutes—never wait on the trail again.
- • **Smart Auto Shut-Off:** Built-in PSI regulator stops inflation automatically, preventing overfill and saving battery life.
- • **All-Inclusive Off-Road Kit:** Includes 30-ft coil hose, inflation gun, 8-ft power cord, 3 inflation tips, and a durable dual-compartment carry bag for ultimate convenience.
- • **Versatile Power Compatibility:** Pre-installed 2-pin SAE connector works seamlessly with multiple power sources including VIAIR’s patented 7-way trailer plug.
- • **Rugged Stability On Rough Terrain:** Patented I-Beam sand tray minimizes vibration and keeps the compressor steady on uneven surfaces.

## Overview

The VIAIR 400P-A EF is a 12V portable air compressor engineered for off-road trucks and SUVs, delivering 150 PSI max pressure with a 0.48 HP motor. It features a 10% faster fill rate and 20% enhanced performance over previous models, an automatic shut-off system for safety, and a patented I-Beam sand tray for stability on rough terrain. Compact and lightweight at just over 10 pounds, it comes with a comprehensive kit including a 30-ft coil hose and inflation gun, making it the ultimate tire inflation solution for serious off-road enthusiasts.

## Description

"The VIAIR 400P-A EF AUTOMATIC 12 Volt Portable Air Compressor for Off-Road Tires The 400P-A EF tire pump for trucks, SUVs, and off-road vehicles is portable, lightweight, and features an automatic shut-off system. Its new head design improves heat dissipation and noise reduction, delivering 20% higher performance and a 10% faster fill rate than comparable models. Compact at 10.87 inches and 10.7 pounds, it’s easy to store and ready when you need it. Electric Off-Road Tire Pump with 2-Pin SAE Packed in a durable dual-compartment carry bag, the 400P-A EF is equipped for any situation. Its pre-installed 2-pin SAE connector provides versatile power options, including VIAIR’s Patented 7-way Trailer Plug. Compatible with All Off-Road Vehicles This powerful air compressor fills a 35"" tire from 15 to 30 PSI in 2 minutes 45 seconds or less. The patented I-Beam sand tray minimizes vibration and keeps the compressor stable on rough terrain, making it ideal for off-road use. Fast & Easy to Use Simply connect the battery clamps, start your engine, attach the hose to the inflation gun, connect the air hose to the vehicle's tire valve, and turn on the unit. 12V Battery Clamps for Higher Performance The 400P-A EF connects directly to the battery for maximum power, ideal for off-roaders needing higher performance than cigarette lighter models can provide. It’s the perfect choice for large tires and tough terrain."

Review: Thank you Viair - Viair is top of the line as far as I’m concerned. It is well built and constructed with quality components. This is my second unit. I also have one for my RV. I tried this unit out today and I am dutifully impressed. The gauge is spot on accurate so no need to double check the pressure with a small handheld gauge. It seems to be quieter than my older unit and it is also smaller and lighter. This 400P Automatic is the way to go because it has a built-in PSI regulator that turns the unit off when it is not being used. Meaning it doesn’t run continuously when turned on. Big big upgrade from the regular 400P and I highly recommend this version. I think it is definitely worth the extra cost. This compressor is going to be kept in my Jeep for off-road adventures. Super happy with this upgrade.
Review: Super Off-Roading Compressor - Fast Air Up Large Tires - Good Purchase ! ! Tremendous heavy duty compressor for off-roading. Fast air up 37" tires. Super reliable and 10 lbs not too heavy. Tough compact nylon carry bag holds everything - compressor, 30 ft coil air hose, air-gun, and so forth - all in one tough nylon case. Built-in SAE 12v connector makes easy connection w 12 AWG battery cable installed separately. The air-gun needs some work -- -- First, remove short floppy hose w lousy right-angle clamp. Port thread is 1/8 NPT. Use adapter to 1/4 NPT. Add brass twist-on chuck to Schrader - see photos. Now can use Schrader hose any length desired. And for easy connect to valve stem use JACO Lightning S2X extension w Self-Locking Nozzle -- -- Second, remove large 150 psi gauge. Again port thread is 1/8 NPT. Replace w MEANLIN gauge 100 psi (or 60 psi) w 1/8 NPT Lower Mount. Now have more compact air gun w custom length hose and better gauge for standard tire pressures

## Features

- PORTABLE *AUTOMATIC* COMPRESSOR for OFFROAD VEHICLES (Model: 40145, 12V, 150 PSI, 35" Tires) – The 400P-A EF Portable Truck Air Compressor features an updated head design for improved heat dissipation and noise reduction, making it an excellent choice for offroad enthusiasts. VIAIR compressors typically last 7X longer than leading competitors.
- FASTER FILL RATE & ENHANCED PERFORMANCE – Delivering a 10% faster fill rate and 20% higher performance along with a gas station inflation gun and convenient trigger-controlled inflation. Its powerful direct drive motor fills up to 35" tires efficiently, while maintaining the industry-leading durability VIAIR is known for.
- VERSATILE POWER OPTIONS: With a pre-installed 2-pin SAE connector, this compressor is compatible with a variety of power adapters, including VIAIR’s Patented 7-way Trailer Plug, making it highly adaptable for different power sources and enhancing ease of use.
- INCLUDED COMPONENTS & HIGH CAPACITY – This kit includes a 30-ft coil hose, inflation gun, 8 ft power cord, a dual-compartment carry bag, and three inflation tips. With 2.59 CFM free flow and a maximum working pressure of 150 PSI, it fills a 35" tire from 10 to 40 PSI in 4 min. 56 sec. or less, offering high-capacity performance in a compact form.
- LIGHTWEIGHT & STABLE BASE: The patented I-Beam sand tray is lighter than previous models, minimizing vibration with a wide stance for added stability on uneven terrain, and ensuring smooth and secure operation in challenging environments.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DKGCFYW8 |
| Air Flow Capacity | 2.59 Cubic Feet Per Minute |
| Best Sellers Rank | #65,934 in Automotive ( See Top 100 in Automotive ) #389 in Wheel & Tire Air Compressors & Inflators |
| Brand | VIAIR |
| Color | Black |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,304) |
| Date First Available | October 21, 2024 |
| Hose Length | 25 Feet |
| Included Components | 25ft Coil Hose, 3pcs Inflation Tips Kit, 400P EF Automatic Portable Compressor, Deluxe Carry Bag, Gas station Style Tire Inflation Gun |
| Item Weight | 10.35 pounds |
| Item model number | 40145 |
| Manufacturer | Viair Corporation |
| Manufacturer Part Number | 40145 |
| Material | Aluminum |
| Maximum Horsepower | 0.48 Horsepower |
| Maximum Operating Pressure | 150 Pound per Square Inch |
| Maximum Power | 360 Watts |
| Model Name | 400P EF Automatic |
| Motor Horsepower | 0.48 horsepower |
| Power Source | Corded Electric |
| Product Dimensions | 10.87"L x 5.83"W x 7.48"H |
| Recommended Uses For Product | Tire Inflation |
| Special Feature | Heavy Duty, Portable, Quick Inflation |
| Special Features | Heavy Duty, Portable, Quick Inflation |
| Style | Enhanced Flow Portable |
| UPC | 818114004704 |
| Voltage | 12 Volts (DC) |

## Product Details

- **Brand:** VIAIR
- **Power Source:** Corded Electric
- **Recommended Uses For Product:** Tire Inflation
- **Special Feature:** Heavy Duty, Portable, Quick Inflation
- **Voltage:** 12 Volts (DC)

## Images

![VIAIR 400P-A EF Enhanced Flow - 40145 Automatic Tire Inflator Portable Offroad Air Compressor for Truck & SUV | 12V On/Off Road Tire Pump Air Compressor | 150 PSI (SAE, Alligator Clips) - Image 1](https://m.media-amazon.com/images/I/81CE6paVPWL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Thank you Viair
*by R***V on September 18, 2025*

Viair is top of the line as far as I’m concerned. It is well built and constructed with quality components. This is my second unit. I also have one for my RV. I tried this unit out today and I am dutifully impressed. The gauge is spot on accurate so no need to double check the pressure with a small handheld gauge. It seems to be quieter than my older unit and it is also smaller and lighter. This 400P Automatic is the way to go because it has a built-in PSI regulator that turns the unit off when it is not being used. Meaning it doesn’t run continuously when turned on. Big big upgrade from the regular 400P and I highly recommend this version. I think it is definitely worth the extra cost. This compressor is going to be kept in my Jeep for off-road adventures. Super happy with this upgrade.

### ⭐⭐⭐⭐⭐ Super Off-Roading Compressor - Fast Air Up Large Tires
*by L***E on August 26, 2025*

Good Purchase ! ! Tremendous heavy duty compressor for off-roading. Fast air up 37" tires. Super reliable and 10 lbs not too heavy. Tough compact nylon carry bag holds everything - compressor, 30 ft coil air hose, air-gun, and so forth - all in one tough nylon case. Built-in SAE 12v connector makes easy connection w 12 AWG battery cable installed separately. The air-gun needs some work -- -- First, remove short floppy hose w lousy right-angle clamp. Port thread is 1/8 NPT. Use adapter to 1/4 NPT. Add brass twist-on chuck to Schrader - see photos. Now can use Schrader hose any length desired. And for easy connect to valve stem use JACO Lightning S2X extension w Self-Locking Nozzle -- -- Second, remove large 150 psi gauge. Again port thread is 1/8 NPT. Replace w MEANLIN gauge 100 psi (or 60 psi) w 1/8 NPT Lower Mount. Now have more compact air gun w custom length hose and better gauge for standard tire pressures

### ⭐⭐⭐⭐⭐ Great inflator—nice automatic inflation feature
*by C***R on December 6, 2025*

Works as advertised. Fast inflation, not too loud, decent cables and alligator clips. Must be hooked directly to your car/truck battery terminals. Stays self-contained in the case (included). It does get warm after long run times and needs to cool off. The automatic inflation feature is convenient and is a must (it turns off compressor when it reaches pressure, and only activates upon demand).

## Frequently Bought Together

- VIAIR 400P-A EF Enhanced Flow - 40145 Automatic Tire Inflator Portable Offroad Air Compressor for Truck & SUV | 12V On/Off Road Tire Pump Air Compressor | 150 PSI (SAE, Alligator Clips)
- VIAIR 7-Way Power Access, 7-Way Blade to 2-Pin SAE 12V Power Source

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-06*