Thermos 420 Grill Parts

Highest quality replacement parts for your Thermos 420 - Free USA shipping $49 or more* - No Sales Tax*

Thermos 420 owners manual and diagrams

Diagrams & owners manual not available for grill model# 420. If you have a manual you're willing to share, please click here to send us an email with the attached manual. Thank You!

Replacement BBQ grill parts for Thermos model: 420

All of the parts we have for Thermos 420 are shown on this page. We might not show the part you need here but we may still have it, or a functional equivalent. In this case, try the category buttons on the right. For example, if your looking for a heat indicator and there are none here, click the heat indicator button to see all we have for Thermos grills. Knowing the dimensions of your existing part will help you find the right part.

To get the correct Thermos 420 BBQ parts

You should measure your existing parts and compare them to what we show here. This is best done with them removed from the grill.
Verify your Thermos model number by checking the CSA appliance tag on your grill to make sure you have the correct model number. Do not rely solely on the owners manual as these are frequently mixed up at retail stores when the grills are assembled. You'd be surprised at how many folks have the wrong owners manual.

420 Venturis

Click for photos

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

==> All Thermos Venturis.

420 Cooking Grids

Click for photos

Porcelain steel cooking grid for Thermos model 420. Porcelain enameled, glossy finish. Sold individually.

Part Number: 51051
Dimension Front-to-Back: 13 3/4”
Dimension Side-to-Side: 25 1/4”
Material: porcelain steel wire
Weight: 3.4

==> All Thermos Cooking Grids.

420 Heat Plates

Click for photos

Porcelain enameled steel heat plate for Thermos model 420.

Part Number: 98401
Dimension Front-to-Back: 6 1/8”
Dimension Side-to-Side: 23 13/16”
Material: porcelain steel
Weight: 1.13

==> All Thermos Heat Plates.

420 Igniter Components

Click for photos

20” igniter wire with female spade and round connector.

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

Part Number: IG-7B
Weight: 0.02

Click for photos

Ignitor electrode and collector box assembly. Fits all grills equiped with the Charbroil Masterflame and MasterFlame II burner systems, including grill brands Charbroil, Coleman, Kenmore, and Thermos. Fits on our burner part numbers BBC, LBBC, TBBC, and TLBBC.

Gas collector box
Ceramic electrode and wire
Mounting hardware

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

Part Number: IG-11B
Weight: 0.3

==> All Thermos Igniter Components.

420 Accessories

12” long wood handle brass bristle grid brush with scraper and leather hang strap.

Part Number: WB-1
Dimensions: 12
Weight: 0.4

==> All 420 Accessories.

BBQ Part Categories

Thermos gas grill 420 - Sunday, May 5 2024

Return to Thermos grill parts main page

More Thermos grill models we have parts for
46334S \| 46353A \| 46428 \| 464536503 \| 464537403 \| 464736503 \| 464843304 \| 465611003 \| 465621303 \| 465630503 \| 466360113 \| 466364006 \| 466464606 \| 466464706 \| 466644704 \| 466761306 \| 466861306 \| 47165 \| 47405 \| 47413 \| 47414 \| 47415 \| 47419 \| 47420 \| 47423 \| 47428 \| 47429P \| 47430P \| 47432 \| 47469 \| 47604 \| 47605 \| 47609 \| 47613P \| 47614 \| 47618 \| 47621 \| 47625 \| 47629 \| 47633P \| 47634 \| 47643 \| 47645 \| 47647 \| 47652 \| 47657 \| 48134S \| 48317S \| 48318S \| 48341S \| Complete list of Thermos grill models...

More Thermos grill models we have parts for

46334S | 46353A | 46428 | 464536503 | 464537403 | 464736503 | 464843304 | 465611003 | 465621303 | 465630503 | 466360113 | 466364006 | 466464606 | 466464706 | 466644704 | 466761306 | 466861306 | 47165 | 47405 | 47413 | 47414 | 47415 | 47419 | 47420 | 47423 | 47428 | 47429P | 47430P | 47432 | 47469 | 47604 | 47605 | 47609 | 47613P | 47614 | 47618 | 47621 | 47625 | 47629 | 47633P | 47634 | 47643 | 47645 | 47647 | 47652 | 47657 | 48134S | 48317S | 48318S | 48341S | Complete list of Thermos grill models...