Accutire MS-4021B Digital Tire Pressure Gauge



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. What's more, the included lithium battery will never need to be recharged or replaced.

Why Correct Tire Pressure Matters


According to the National Highway Traffic Safety Administration (NHTSA), under-inflated tires are the leading cause of tire failure, which accounts for 660 fatalities and 33,000 injuries each year.

With many drivers planning road trips, Accutire wants to remind travelers to follow a three-point checklist that will help maintain optimal safety on the road and help the environment by increasing fuel efficiency.


Measurement Ltd.’s brands include: Accutire, Accutape, Park-Zone, Air Weigh, Accupost and Accufit. Measurement Ltd also designs and manufactures 'private label' products for original equipment manufacturers (OEMS) world-wide. Measurement Ltd.’s line of products includes: tire pressure gauges, distance measurers, parking aids and a range of scales including kitchen postal and luggage.

  • 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
  • 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


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.

Product Information
Size: 1 Pack
Technical Details

Brand Accutire
Item Weight 0.8 ounces
Product Dimensions 6.7 x 2.4 x 0.8 inches
Item model number MS-4021B
Manufacturer Part Number 4021B

  • Read more: homepage here

Technical Specification


Features Comparison Chart [PDF]
Additional Information

ASIN B00080QHMM
Customer Reviews
4.4 out of 5 stars See all reviews
2,277 reviews
4.4 out of 5 stars
Best Sellers Rank #2 in Automotive (See top 100)
#1 in Automotive > Tools & Equipment > Tire & Wheel Tools >Tire Gauges
#1 in Automotive > Tools & Equipment > Tire & Wheel Tools >Tire Repair Tools
#1 in Automotive > Wheels & Tires > Accessories & Parts
Shipping Weight 0.8 ounces (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available March 14, 2005


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