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RG4MAD 1/2
RG4MAD 1/2
RG4MAD 1/2
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RG4MAD 1/2" Regulator & Gauge

Marsoni M251S
Sale price$133.80
Pay 4 payments of $33.45 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
RG4MAD 1/2" Regulator & GaugeRG4MAD 1 2" Regulator and Gauge, Manifold Clean, optimally regulated air is a "key" ingredient that enables effective and efficient operation of tools, equipment, and machinery in almost every industry. Quality built, Reading Technologies air pressure regulators have a balanced structure, and are featured with good precision and stability. When only the finest and cleanest air will do, look no further than RTI to meet all of your needs.
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Your RG4MAD 1/2" Regulator & Gauge orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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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
4.9 ★★★★★
Based on 1037 reviews
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Product Reviews
M
Verified Purchase
Michael Howard
Phoenix, US
★★★★★ 5
Do it mayne
Size: 9.5" x 10.9" x 2.1"
Good quality and fit but find it funny that the instructions with the air flow are on the side. I assume that would be facing out and was annoyed when I tried to close and it didn’t fit. Probably should have read the directions. Still would recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
K
Verified Purchase
Kcfangue
Fort Morgan, US
★★★★★ 5
Perfect fit, durable and affordable
Size: 9.5" x 10.9" x 2.1"
Ordered this for our 2023 Honda civic. Great fit, durable and very affordable. Was so easy to pull old one out and replace new one. Will be ordering again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 3, 2025
N
Verified Purchase
NY2CO
Louisville, US
★★★★★ 5
Save money by installing yourself
Size: 9.5" x 10.9" x 2.1"
Good price and easy to install in a 2019 Honda CRV. Instructions can be found on YouTube. Much less expensive than having a service center install them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2026
C
Verified Purchase
Customer Review
Lexington, US
★★★★★ 4
Always fits and is easy to install
Size: 9.5" x 10.9" x 2.1"
We've bought these for years and they always fit and are easy to install. Easy to see when they are dirty and need to throw away. Embarrassed that we let the car dealership do it for so long. We set on six-month subscribe and save so that we know when to replace it - change it whenever it shows up!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 13, 2023
R
Verified Purchase
Randy Shiverdecker
Whiting, US
★★★★★ 5
Better than I expected.
Size: 9.5" x 10.9" x 2.1"
Fits perfectly. Easy to install. As good of quality as the original equipment filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026

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