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Accutire MS-4021B Digital Tire Pressure Gauge

4.4 out of 5 stars 2,900 customer reviews
| 71 answered questions

Price: $11.69 & FREE Shipping on orders over $49. Details
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Ships from and sold by Amazon.com.
1 Pack
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  • Heavy duty construction and rugged design for long lasting use
  • Angled head and rubber coated handle for easy gripping
  • Large, easy-to-read LCD display
  • Equipped with an automatic shut off to prevent deflation
  • Accurate to within 0.05 PSI, reading air pressure from 5-150 PSI in 0.5 pound increments
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$11.69 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com.

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Product Information

Size:1 Pack

Technical Details

Brand Accutire
Item Weight 3.2 ounces
Product Dimensions 6.7 x 2.4 x 0.8 inches
Item model number MS-4021B
Exterior Smooth
Manufacturer Part Number 4021B
Folding No

Technical Specification

Additional Information

ASIN B00080QHMM
Customer Reviews
4.4 out of 5 stars 2,900 customer reviews

4.4 out of 5 stars
Best Sellers Rank #146 in Automotive (See top 100)
#2 in Automotive > Tools & Equipment > Tire & Wheel Tools > Digital Tire Pressure Gauges
#2 in Automotive > Tools & Equipment > Tire & Wheel Tools > Tire Gauges
#5 in Automotive > Wheels & Tires > Accessories & Parts
Shipping Weight 3.2 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available March 14, 2005

Warranty & Support

Warranty, Parts:Parts

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Product Description

Size: 1 Pack

The Accutire MS-4021B digital tire pressure gauge features a large, easy to read LCD display that provides pressure readings from 5-150 PSI in 0.5-pound increments. It is ergonomically designed with an angled head and a rubber coated easy-grip handle. The heavy-duty construction will easily withstand shifting around in your glove compartment or toolbox. If you forget to turn the gauge off, don't worry, it is equipped with an automatic shut off system.

From the Manufacturer


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 1 Pack
Please ignore the other two users that gave this gauge only one star because it only read 28.5 psi. I find it amusing, but sad, that they didn't realize that there was a protective sticker on the screen that read 28.5. If you peel off that protective sticker, then you get a nice, bright red backlit number displaying your true tire pressure. This gauge works great! The display is amazingly easy to read, and it is also simple to get a good reading.

Prior to owning this Accutire model, I had a 7 year old Accutire digital gauge that finally broke. WIth that old model, it was much harder to get a reading without air leaking out. With this new model, if you just push the gauge straight into the valve stem, you easily get a solid reading without leaking air. The old model's display wasn't backlit either, and I was truly impressed with the large, bright numbers on this new model. I'd highly recommend getting this gauge, as it has all the functionality you need, at a very reasonable price. I like having accuracy to 0.5 psi, and I never use non-digital gauges unless I have no other choice. I also tested this gauge with back-to-back measurements, and it was accurate every time. You won't regret this purchase...
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Size: 1 Pack Verified Purchase
This is by far the best tire gauge I've ever had. It lights brightly, easy to see even in sun and always visible at night. Accuracy is high, construction quality is excellent. Highly recommended!
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Size: 1 Pack Verified Purchase
I bought two of these gauges, one for my air compressor accessory kit and one for my daughter's car. Calibration is extremely easy and the readings are in 0.5 psi increments. No more moving parts and messed up readings. There's no gasket on the stem where it touches the tire valve but that didn't seem to be a drawback at all. You don't even have to wait for the last reading to clear before taking another. Nothing fancy, just practical and handy.
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Size: 1 Pack Verified Purchase
While this product works fine, and is accurate, it uses (3) A76 watch batteries. That's a lot of batteries. and the batteries generally only last about 6 months. I have to pay $2 ea for the batteries. Total $6 each time. That's $12 a year. and the unit only cost $8.
Maybe a unit that uses lithium or other long-lasting batteries would be better.
Next time, i think i will try one of the better, more-expensive units.
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Size: 1 Pack
...try peeling the protective plastic film off the LCD display. The film is imprinted with a "28.5" to simulate the gauge's display so it looks more attractive when it's on the rack at the store.
5 Comments 162 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: 1 Pack
we bought this at canadian tire and within a year or so the tire gauge split lengthwise along the seam - making it useless - as the air just leaks out the side and doesn't measure the pressure... i give it one star for lack of durability (its not like we use it daily... so maybe 10 uses?)
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Size: 1 Pack Verified Purchase
I found the tire gauge readings to be accurate, and initially this meter was easy to use and quick to take a measurement.

However, within 5 months, the plastic part of the gauge that you put onto your tire had deformed to the point that it would no longer take a reading from a tire. I do not work at a mechanical shop, and I have one car and I had taken a reading about once a week for 4-5 months.

I would not recommend this product.
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Size: 1 Pack Verified Purchase
I gave this gauge to my son a couple of years ago. A young driver should know how to take care of their car, and this gauge seemed easy to use and has decent reviews.

It disappointed me a bit that I ordered two, at the time, (one for me, too) and only one of them worked. However, they are cheap. I didn't worry about it too much. I gave my kid the one that worked.

This evening I drove my son's car for the first time in a while. We got his Mom a new car a couple of months ago. He's stepped up into her old 2005 CRV, and has been taking care of it himself. The steering was heavy - as if the front tire pressure was way too low. I asked him about it and he agreed that it didn't seem quite right but he was certain that the tires had adequate pressure. He's been using the gauge I gave him. When we got home, we checked. We used his gauge, and then double-checked with the one I'd kept using (an older dial gauge that I trust).

They disagreed by seven pounds. This 'Accufire' read way too high, and I put it in my son's hands, leaving his tire pressure over 20% too low. He sometimes takes this car on very long drives to visit a girlfriend who's at a college hours away. I feel pretty stupid and am really glad we caught this before something bad happened. There is some odd tire wear, but it isn't too bad. I feel like a fool. That's the worst of it.

Needless to say, I would not touch another product from this company with a ten foot pole. He has my dial gauge now. I've come b Amazon this evening to shop for a replacement for me, and thought it worth sharing our experience. If you buy one of these, please don't give it your trust, and particularly not to someone who trusts you implicitly, before comparing its readings with other gauges.
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