Thermos 51221203 Grill Parts

Deluxe stainless steel twin-venturi burner and venturi assembly for Thermos model 51221203. Includes:

• DLB stainless steel H burner.
• Deluxe burners have a special spot-welded mounting bracket for optional IG-5B universal tongue-style collector box and electrode. The IG-5B can be used in applications where the factory ignition system is irrepairable, non existant, or otherwise unusable.
• Two (2) V-12 stainless steel single venturi.
• Venturi gasket and mounting nuts (venturi mounts with nuts and bolts, not screws).
• 5 year MHP limited warranty.
• Click here for features of MHP deluxe SS burner.

Part Number: DLB+V-12
Dimensions: 8 1/8” x 19 1/2”
Material: stainless steel
Weight: 2.0

Deluxe stainless steel twin-venturi burner for Thermos model 51221203. Includes:

• DLB stainless steel H burner (venturi not included).
• Deluxe burners have a special spot-welded mounting bracket for optional IG-5B universal tongue-style collector box and electrode. The IG-5B can be used in applications where the factory ignition system is irrepairable, non existant, or otherwise unusable.
• Venturi gasket and mounting nuts (venturi mounts with nuts and bolts, not screws).
• 5 year MHP limited warranty.
• Click here for features of MHP deluxe SS burner.

Part Number: DLB
Dimensions: 8 1/8” x 19 1/2”
Material: stainless steel
Weight: 2.0

Stainless steel single venturi. Flexible and adjustable from 8” to 11”. Gasket & screws not included, see part # SHK4. Sold individually.

Part Number: V-12
Dimensions: 11
Material: stainless steel
Weight: .3

Single Gasket Kit Economy Burners

Part Number: SHK4
Weight: 0.01

Universal Spider Guards. Helps prevent dangerous flashback fires caused by spider webs in venturi tubes.Stainless steel spider guards slip over the air shutter on most venturi tubes to help keep the spiders out. For 3/4” venturi tubes.

Part Number: SG-B
Material: stainless steel
Weight: 0.1

Cooking grid not known for Thermos model 51221203. Our parts information for this grill model is incomplete, and we really don't know with certainty which cooking grid fits this model. It may be that we have the part but don't show it here due to data or other error.

If you know the original OEM part number, try searching for it in the search box at the top of this page.

You can also browse through all of the Thermos cooking grids we carry. If we don't have the exact fit grid for your grill, we may have a suitable replacement part. Measure your existing part as well as the the grid support area of the grill so you'll know exactly what size grids will fit.

If you have this grill model and know the number and dimensions of your original cooking grids, please share this information with us. Click here to send an email to our GrillDr that includes this information. We greatly appreciate your help.

Part Number: CG-DUMMY
Weight: 1.0

Rock grate for holding lava rock or ceramic briquettes.

Part Number: BG-28
Dimension Front-to-Back: 13 5/8”
Dimension Side-to-Side: 22 1/4”
Material: carbon steel
Weight: 4.5

Heat Plate/ Flame Tamer not known for Thermos model 51221203. Our parts information for this grill model is incomplete, and we really don't know with certainty which heat plate fits this model. It may be that we have the part but don't show it here due to data or other error.

If you know the original OEM part number, try searching for it in the search box at the top of this page.

You can also browse through all of the heat plates we carry for your brand grill. If we don't have the exact fit for your grill, we may have a suitable replacement part. Measure your existing part so you'll know exactly what size is needed.

If you have this grill model and know the number and dimensions of your original heat plates, click here to send an email to our GrillDr that includes this information. We greatly appreciate your help.

Part Number: HP-DUMMY
Weight: 1.0

20” Ignitor adapter wire with female spade connector and male round connector. Used primarily on Ducane models 7100 and 7200 to extend the wire from the 03758 collector box and electrode to the electronic spark generator (igniter).

For more information about ignition systems and components, please see article Ignition 101 in our help center.

Part Number: 03750
Dimensions: 1/16
Weight: 0.05

Universal adapter wire with male round and female spade connectors.

For more information about ignition systems and components, please see article Ignition 101 in our help center.

Part Number: 03751
Weight: 0.05

Tongue style collector box for burner mounted applications. Includes preinstalled electrode with round female connector end and 20” wire. Fits on all of our Deluxe stainless H burners (LB, SB, DLB, DSB) using special mounting bracket on these burners. Will not fit on cast iron burners (see part IG-15B for cast iron burner applications).

For more information about ignition systems and components, please see article Ignition 101 in our help center.

Part Number: IG-5B
Weight: 0.3

Universal collector box with electrode and wire. Fits most H burners, cast iron and stainless. Mounts to burner using venturi screws. Slotted construction allow universal adjustment of electrode position.

For more information about ignition systems and components, please see article Ignition 101 in our help center.

Part Number: IG-15B
Weight: 0.3

Universal warming rack. For use on grills with at least 22” inside dimension.

Part Number: AP-6A
Dimensions: 6” x 21 1/2”
Material: Chrome steel
Weight: 1.3

Brass spud orifice with 5/16” x 32 thread size. Has #70 starter hole. Must be drilled to proper drill size.

If you would like us to drill the orifice(s) for you, there is a single $15 fee for this service, which will be added to the order when processed. Please tell us the number of burners in your grill and the total BTUs of your grill (less side burner and rotisserie burner, if any). BTU rating information can usually be found on the grill's CSA certification tag, located somewhere on the grill. Please furnish this, along with any other information you deem relevant, in the Message to CLA box during checkout.

Part Number: 31600
Dimensions: 0 3/8” x 0 7/16”
Material: brass
Weight: 0.01

Dual brass LP valve assembly. Includes left and right control valves and valve manifold. Fits Arkla up-front control grills and others requiring 45 degree angle valves.

• For use with LP gas
• Includes two orifices drilled to #57 drill size
• Includes pre-assembled 45 degree angle fitting, not shown in photo

Part Number: VLV-28
Material: brass
Weight: 1.1

High quality, long lasting ceramic briquettes. 59 flat top pyramid-shaped briquettes per box. Placed 1/2” apart, 59 briquetes will cover about 368 square inches. This is an area roughly 15” x 24”.

• Top quality product
• Each briquette measure 2” x 2”
• Self cleaning
• Great heat distibution, retains heat longer
• Can be used on all grills that use briquettes or lava rock
• Use a single layer (multiple layers can reduce temperatures)

NOTE: These high quality ceramic briquetes are available in 59 count, 70 count, and 90 count qantities.

• 59 briquetes covers an area apprimately 15” x 24”
• 70 briquetes covers an area apprimately 17” x 26”
• 90 briquetes covers an area apprimately 17” x 33”

Part Number: CLA-AC0394
Dimensions: 2” x 2”
Material: ceramic
Weight: 7.65

BBQ'er choice porcelain grill briquets. The finest available.

• Self-Cleaning Porcelain Briquettes.
• Made of fired porcelain for even heat transfer.
• Virtually indestructible.
• About 56 pieces covers approximately 310 square inches.
• Made in USA.

NOTE: MHP model TJK requires two (2) bags.

Part Number: BQ-3A
Weight: 4.2

Natural lava rock processed and screened for uniformity. 7 lb. bag is enough for all full sized grills. Click the photo to find easy steps for installing lava rocks.

Part Number: 45887
Material: pummise
Weight: 7.0

Universal Grid Lifting Tool

Part Number: BRGG
Weight: 1.0

Replacement brass bristle brush head for WB-8 brush. Screws included.

Part Number: WB-8RH
Dimensions: 18 1/2
Material: stainless steel
Weight: 0.2