Thermos 78504B Grill Parts

Deluxe stainless steel twin-venturi burner and venturi assembly for Thermos model 78504B. Includes:

• DSB 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: DSB+V-12
Dimensions: 8 1/8” x 16”
Material: stainless steel
Weight: 2.0

Deluxe stainless steel twin-venturi burner for Thermos model 78504B. Includes:

• DSB 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: DSB
Dimensions: 8 1/8” x 16”
Material: stainless steel
Weight: 1.5

Stainless steel burner and venturi assembly kit for Thermos model 78504B. Contains one standard EDSB SS H burner and two V-12 adjustable universal venturis.

Part Number: EDSB+V-12
Dimensions: 7 1/4” x 15 1/2”
Material: stainless steel
Weight: 2.0

Standard stainless steel burner with adjustable legs for Thermos model 78504B. Comes with gasket and scews.

Part Number: EDSB
Dimensions: 7 1/4” x 15 1/2”
Material: stainless steel
Weight: 1.5

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

Cooking Grid Stainless Steel Prochef for Thermos model 78504B.

Part Number: CG-50SS
Dimension Front-to-Back: 14 1/2”
Dimension Side-to-Side: 10 1/2”
Material: stainless steel
Weight: 2.80

1-piece chrome plated cooking grid for Thermos model 78504B.

Part Number: CG-27
Dimension Front-to-Back: 14 1/2”
Dimension Side-to-Side: 22”
Material: Chrome steel
Weight: 3.4

Commercial 304 grade stainless steel cooking grid with 1/4” diameter rods for Thermos model 78504B. Sold individually. Made in USA.

Part Number: CG-53SS
Dimension Front-to-Back: 14 3/4”
Dimension Side-to-Side: 21 1/2”
Material: Stainless steel
Weight: 5

Heat Plate/ Flame Tamer not known for Thermos model 78504B. 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

Durable 2 5/16” round briquettes

• Self-cleaning
• Control flare-ups while holding an even heat pattern.
• About 53 pieces, covers approximately 275 sq. inches.
• Fits all gas grills

Part Number: BQ-5
Weight: 7.2

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

16” Stainless Steel Tong/Turner Combination. 16” multi-use tool with red soft grip rubber inserts. Can be used as a turner, tong or both. Manual lock saves on storage space.

Part Number: 40240
Material: chrome steel
Weight: 0.9

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