NORCOLD INC burner and orifice assembly kit 621957 for RV refrigerators — OEM replacement restores steady gas heating

The Norcold 621957 is a replacement burner and orifice assembly kit designed to restore safe, consistent gas heating in compatible Norcold RV and trailer absorption refrigerators.

This OEM-style assembly replaces worn or damaged burner and orifice components on a long list of Norcold refrigerator models, helping maintain proper combustion and heat distribution inside the refrigerator's gas compartment. Supplied as a complete kit, it includes the parts you need to swap into refrigerators commonly found in trailers, campers, and motorhomes. The part is manufactured for Norcold Inc and is intended for models listed in the compatibility section below.

Which Norcold refrigerator models does this kit fit?

The 621957 burner and orifice assembly is compatible with many Norcold absorption fridge variants spanning N1095-series through N843-series models. Check your refrigerator model number and compare it to the compatibility list before ordering to ensure fitment.

• Fits dozens of models including N1095, N610/N611, N621/N623, N640/N641 variants, and N810–N843 families.
• Supports both standard and stainless/black finish model suffixes (IM, SS, BK where applicable).
• Ideal for RV, trailer, and camper refrigerators that use the original Norcold burner layout.

How does replacing the burner and orifice help refrigerator performance?

A clean, correctly sized burner and orifice promotes steady, efficient gas flame and even heat within the unit's heat exchanger. Replacing degraded components can address flame instability, reduced cooling efficiency, and potential safety concerns associated with improper combustion.

• Restores consistent gas flow and stable flame characteristics for reliable operation.
• Helps the absorption cycle reach intended temperatures more effectively.
• Reduces the chance of flame-outs or irregular heating caused by clogged orifice holes.

What comes in the package and what are the physical specs?

The purchase includes the burner and orifice assembly components required for replacement; it’s shipped as a single packaged kit. Dimensions and weight reflect the boxed product ready for shipment.

• Package dimensions: 17.64 x 10.43 x 5.71 inches (L x W x H).
• Package weight: 17.16 pounds—includes protective packing and assembly parts.
• Part number: 621957; country of origin: China.

Can I install this myself or should I hire a technician?

If you have experience working with gas appliances and basic hand tools, you can replace the assembly yourself following safe shutdown and disconnection procedures. For confidence and safety—especially where gas lines or sealed components are involved—consider professional installation.

• Turn off gas supply and propane source before any work.
• Follow Norcold service instructions or a trusted repair guide for step-by-step replacement.
• If unsure, schedule a certified RV technician to verify combustion and leak-free operation after installation.

Who is this for: This Norcold 621957 burner and orifice assembly kit is intended for RV owners, service shops, and DIYers who maintain Norcold absorption refrigerators across a wide model range. It’s a practical replacement when your fridge shows signs of unstable gas flame, diminished cooling while on gas, or when routine maintenance reveals a worn orifice—helping extend the working life of your refrigerator and restore dependable operation while traveling.