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Main product image of Burner Assembly Kit - RG40S-40 NG, AM39922-1
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Burner Assembly Kit - RG40S-40 NG, AM39922-1
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$177.90 each
In Stock
In Stock
Get 11 Wed, Jun 10
Order by today, receive Wednesday
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Easy Returns No restocking fee for 90 days

Product Highlights

Product Highlight: Fuel Type
Natural Gas

Description

Rheem AM39922-1 Burner Assembly Kit (RG40S-40 NG)
An OEM Rheem natural-gas burner assembly kit used to replace the burner assembly on specified Rheem residential gas water heaters when the correct RG40S-40 natural gas burner kit is required.

Key Features
  • Natural gas burner assembly kit (Fuel Type: Natural Gas)
  • Application listed as Replacement Part
  • Burner assembly kit includes all OEM replacement water heater components to replace burner assembly

Compatibility & Applications
  • Listed for RG40S-40 (Natural Gas) applications as named on the product listing.
  • Must only be used where the manufacturer specifies this exact part number: AM39922-1 (verify by water heater model/serial and the unit's parts information before ordering).

Installation & Operation Notes
  • Installation should be performed by a qualified water-heater service technician experienced with gas appliances.
  • Reference the water heater's service/installation manual for safe shutdown, burner compartment access, proper reassembly, and leak/operation checks after replacement.

Maintenance & Troubleshooting
  • This kit is commonly replaced when burner/pilot operation is unreliable or the heater is not heating properly and diagnosis points to the burner assembly.
  • User feedback specifically links replacement to resolving a pilot that would blow out when the burner lit and restoring normal operation.
  • If problems persist after replacement, follow the water heater troubleshooting guidance to confirm combustion air, venting, and related ignition/safety components are operating correctly.

User Reviews & Q&A Summary
  • Direct-fit and complete kit: Reviewers frequently describe it as a direct replacement that feels well-built and complete.
  • Fast, straightforward swap: Many report a quick changeout (often around 20 minutes) and that it's DIY-friendly for experienced users.
  • Problem resolved: Common outcome is restoring reliable burner/pilot operation and getting hot water back quickly.
  • Customer service / ordering confidence: Reviews highlight helpful support identifying the right part using the heater's model/serial, plus positive experiences with shipping speed and returns when mistakes were made.

Specs

Application:

Replacement Part

Fuel Type:

Natural Gas

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Product Reviews

4.92 out of 13 reviews
100% would recommend this product
4.92
out of 13 Reviews
100% would recommend this product
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Showing 1-10 of 13 reviews

I would recommend this product.

Very well built and complete. Easy install
italiancowboy
Weldona Co
3 years ago
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Perfect fit

I would use supply house again any day, I was able to get all the parts I needed for my water heater very fast. Highly recommended for the diy group.
Bsmoove
Saint Paul mn
4 years ago
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Perfect

Delivery was sooner than expected. Item in good condition. Everything good I strongly recommend this page. Is the best.
Dario
Louisville KY
4 years ago
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Great Part Great Fit!!

I needed a new burner assembly for my residential water heater. I had a "Jack Leg" repairman come 5 times to fix the water heater. His conclusion I needed a new water heater! I simply hit the innerweb and it took me too SupplyHouse. I sent an email with the part number & serial number of my product and I was able to get the right part I needed for my repair! Very quick shipping from this supplier!! Overall I'm a happy customer!! 2 thumbs up to this company.
Joe Not The Plumber
Cheraw SC
5 years ago
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I will by items that I need from SupplyHouse again.

The burner assembly was a direct replacement for the one I took out. It was shipped to me in a very short time period. Took all of 20 minutes to swap out the old with the new one. In the future if I need any items that you handle I will by them from you.
JC Koehler
Belgium, Wisconsin
7 years ago
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Great customer service

The product that I ordered was incorrect, not because of a defective, but from my own mistake. These guys were more than helpful and I was able to return the product for a full refund. I would definitely do business with this company in the future.
Joe the satisfied customer
Albuquerque, NM
8 years ago
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Extra extra heat all about it

My old burner would blow out the pilot light everytime it lit on a 10 year old water heater. The replacement game in I installed it in about 20 minutes and the problem was gone.
Frank the Tank
A city near you
8 years ago
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Fixed water heater- Marriage Saved!

Came fast - fixed problem
Tom
SE AZ
8 years ago
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Perfect Fit and like for like change out

I bought this part here because Rheem says they do not sell it any more, though they were able to confirm the part number for me. It was a like for like change out which made it fast and simple.
Ray
Houston, Texas
8 years ago
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It worked perfect

Great product
Jaime
Houston Texas
8 years ago
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