SKU: 36660092083

4955421RX Genuine Cummins EGR Valve Kit

Sale price$160.17 Regular price$177.97
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Description

4955421RX Genuine Cummins EGR Valve KitPart details DESCRIPTION Egr Valve Kit For Cummins CONDITION Used BRAND Cummins PART NUMBER 4955421RX OTHER OEM PART NUMBERS THAT WILL WORK 3104875RX, 3104875, 4955421NX, 4090007, 4955421, 4089493NX, 4089787NX, 4089834, 4089787, 4089493, , 3103824, 4921905, 3103765, 3103361, 3102745 Function of this part The EGR (exhaust gas recirculation) system routes a controlled amount of exhaust gas back into the intake. This lowers combustion temperatures and

Part details

DESCRIPTION Egr Valve Kit For Cummins
CONDITION Used
BRAND Cummins 
PART NUMBER 4955421RX
OTHER OEM PART NUMBERS THAT WILL WORK 3104875RX, 3104875, 4955421NX, 4090007, 4955421, 4089493NX, 4089787NX, 4089834, 4089787, 4089493, , 3103824, 4921905, 3103765, 3103361, 3102745

Function of this part

The EGR (exhaust gas recirculation) system routes a controlled amount of exhaust gas back into the intake. This lowers combustion temperatures and helps reduce NOx emissions.

Why this part matters

Because EGR flow is monitored closely by the engine management system, issues with EGR valves or coolers quickly trigger fault codes and derates. Keeping the EGR system in good working order is key to reliability and emissions compliance.

About the brand

Cummins engine parts are trusted for reliable power in a variety of heavy-duty truck and equipment applications.

Fitment & usage

Used OEM parts are a smart choice for controlling repair costs while still using original-equipment components. Always match the OEM part number(s) listed to your existing part, and consult your service manual, dealer, or technician if you are unsure about fitment.

Note: Because this is a used component, normal signs of wear such as scratches, discoloration, or light surface corrosion may be present. Refer to the product photos and information on Second Truck Parts for the best representation of the part you will receive.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 36660092083

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Rose
Boise, US
★★★★★ 5
Good
Good product
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Reviewed in the United States on April 26, 2026
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Kindle Customer
Lake Worth, US
★★★★★ 5
No more migraines
I have suffered migraines for years. It was so bad in December 2025 that I begged my neurologist for help. He suggested several things that I was unwilling to try due to the side effects. However, he recommended I try 400 mg daily of Magnesium L Threonate. January 2026, I started the taking it. The first month only 3 migraines for the whole month after years of 3-4 migraines a week. Its May 2026 and I have only had 3 more migraines this year. I highly recommend this product for migraine prevention.
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Reviewed in the United States on May 20, 2026
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tron
Los Angeles, US
★★★★★ 5
The best Magtein I have tried thus far
I take double the dose because when I double the dose it improves my ability to pay attention and I am less distracted. Yes I have ADD but no longer take Adderall for it. Being 56 years old Magtein really improves my memory and restored it to like new by ten days of use. Shockingly It woke me up from a light sleep late evening as memories rushed in and I have been taking it ever since. I have been taking it 7 months now and over time it has slowly but surely improved my short term memory so that it also is nearly the same as before. I have seen slight improvements in working memory enough to be encouraged It may become an advancement from a historical standpoint. This is my second bottle by Teraputics. I was taking 2 bottles of NOW brand per month for my memory and concentration because it is the cheapest but when Amazon ran out Teraputics is the product I decided to try next. But I like this brand better as it seems more concentrated or I should probably say more bio-available so I decided to by it and pay the extra money over NOW brand. I just wish it were cheaper. I am hoping to ask them for a deal if I buy 20 bottles in advanced as it is a must have for me. With this second purchase they included a free bottle coupon and not a buy one get one free. Right now I am very happy to get the free bottle.
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Reviewed in the United States on March 23, 2019
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Gloria C.
Boise, US
★★★★★ 3
Daily Intake on Label Confusing
Label was not clear regarding milligrams per pill. Title label stated 2000mgs per serving (of 4 pills), but “supplement label” states 4 pills is 144 mgs per serving as a 34% of daily value. Very confusing. Not sure which metric to go by for daily intake.
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Reviewed in the United States on December 22, 2025
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Michael R. Wong
Charlottesville, US
★★★★★ 5
Great supplement
I like the way it helps me relax to sleep and helps to keep me more focused
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Reviewed in the United States on June 3, 2026

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