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VIAIR 90111 Pressure Switch with Relay, Black, 7.3 x 3.5 x 2.3 inches

4.5 4.5 out of 5 stars 518 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Automotive Replacement Air Pressure Switches by VIAIR

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Purchase options and add-ons

  • Pressure switch turns air compressor on at 110 PSI, off at 145 PSI
  • Has a built in relay to carry longer loads and prolong life.
  • For 12 volt systems
  • Pressure sensor connects via 1/8" NPT M Port

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 2 x 2 x 5 inches; 7.68 ounces
  • Item model number ‏ : ‎ 90111
  • Date First Available ‏ : ‎ September 14, 2005
  • Manufacturer ‏ : ‎ Viair Corporation
  • ASIN ‏ : ‎ B000FQ793A
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.5 4.5 out of 5 stars 518 ratings

Product Description

Viair pressure switches allow compressors to be turned on and off automatically at pre-set pressures, removing the possibility of operating your compressor over its rated pressure.

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Top Brand: VIAIR

Highly Rated
4.6/5 star rating from 10K+ customer ratings
Trending
10K+ orders for this brand in past 3 months
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What's in the box

  • Pressure Switch w/relay
  • Looking for specific info?

    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    518 global ratings

    Customers say

    Customers like the value, ease of installation, and performance of the auto accessory. They mention that it's a quality product for the price, and that it works good. That said, some complain about the durability, saying that it corrodes inside. Opinions are mixed on quality.

    AI-generated from the text of customer reviews

    34 customers mention30 positive4 negative

    Customers like the performance of the auto accessory. They mention that it works well and their experience with the product was fantastic.

    "Does the job! Easy hook up with the labeled instructions. Well worth the money. Quality product!" Read more

    "...Horn kit works perfect again. 1st one lasted me 2.5 years, so I'm guessing this one will too, as its the exact replacement...." Read more

    "Works well enough, but its HUGE!" Read more

    "...The horn is my "anti-driving-while-texting-device". Works well..." Read more

    8 customers mention8 positive0 negative

    Customers appreciate the value of the auto accessory. They mention it works great and is a good price.

    "Does the job! Easy hook up with the labeled instructions. Well worth the money. Quality product!" Read more

    "It is large, but a nice, affordable solution for a relay and pressure switch...." Read more

    "works great, also is a good price. it is way bigger then it looks in pictures tho. good price on hereAfter 3years it's still working great" Read more

    "Quality product for the price" Read more

    7 customers mention7 positive0 negative

    Customers find the installation process of the auto accessory to be easy. They mention that it is easy to hook up and wire.

    "Does the job! Easy hook up with the labeled instructions. Well worth the money. Quality product!" Read more

    "easy to install and works as expected" Read more

    "works well and as advertised.Easy to wire into system.Quality product that I would buy again...." Read more

    "Extremely easy to wire up and works perfectlyUpdate stopped working after 5 months...." Read more

    14 customers mention7 positive7 negative

    Customers are mixed about the quality of the auto accessory. Some mention it appears to be of good quality, while others say that it lasted less than a year and corroded positive 12v inside.

    "...Easy hook up with the labeled instructions. Well worth the money. Quality product!" Read more

    "Fixed the 900.00 train horn. These things are garbage and don’t last 6 months...." Read more

    "Viair makes good stuff, and this is no exception. Quality is good, but I've been through two of these and both lasted about two years apiece...." Read more

    "...First one came with kit. Had it for over a year, lasted less than a year. Corroded positive 12v inside...." Read more

    4 customers mention0 positive4 negative

    Customers are dissatisfied with the durability of the auto accessory. They mention that it corrodes inside and needs to be greased.

    "...Installed in spring and rust /corrosion by fall." Read more

    "...•1st just stopped working•2nd melted it’s self•3rd threads corroded and leaked air...." Read more

    "...Had it for over a year, lasted less than a year. Corroded positive 12v inside. Just needed a drop of grease to prevent this rookies. See pictures." Read more

    "Lasts one season, took last one apart. See picture.. all corroded inside. These don’t seem to be sealed from the weather" Read more

    Cheap Fix for My $900 Air Horn
    5 Stars
    Cheap Fix for My $900 Air Horn
    I have a HornBlasters Conductor Special that I love on my Ford F350. It quit working about 2 months out of warranty. I traced the problem to this part and replaced it cheaply myself. The wires are marked well. The horn is my "anti-driving-while-texting-device". Works well...
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    Customer image
    5.0 out of 5 stars Cheap Fix for My $900 Air Horn
    Reviewed in the United States on September 30, 2020
    I have a HornBlasters Conductor Special that I love on my Ford F350. It quit working about 2 months out of warranty. I traced the problem to this part and replaced it cheaply myself. The wires are marked well. The horn is my "anti-driving-while-texting-device". Works well...
    Images in this review
    Customer image
    Customer image
    3 people found this helpful
    Report
    Reviewed in the United States on December 28, 2019

    Top reviews from other countries

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    José Manuel Barajas
    5.0 out of 5 stars Entrega en tiempo y forma
    Reviewed in Mexico on August 26, 2018
    Brian Selman
    5.0 out of 5 stars Great Product!
    Reviewed in Canada on June 24, 2016
    Joel
    5.0 out of 5 stars Five Stars
    Reviewed in Canada on May 28, 2018
    Joe
    5.0 out of 5 stars great product.
    Reviewed in Canada on April 29, 2015
    Aaron
    5.0 out of 5 stars Five Stars
    Reviewed in Canada on February 16, 2018