Costco 21129 Grill Parts

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Highest quality replacement parts for your Costco 21129 - Free USA shipping $49 or more* - No Sales Tax*

 

Costco 21129 owners manual and diagrams
Diagrams & owners manual not available for grill model# 21129. 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 Costco model: 21129
All of the parts we have for Costco 21129 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 Costco grills. Knowing the dimensions of your existing part will help you find the right part.

To get the correct Costco 21129 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 Costco 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.
 


21129 Burners

44305-R 5-Pack Cast stainless steel burners for Costco model 21129.
  • Replaces original Bull part# 44305
  • Includes adjustable air shutter and screw in the venturi for adjusting air flow.
  • Sold as a set of five (5) burners
Note: The original 44305 burner was a welded stainless steel burner. This replacement burner is a solid cast stainless burner, equivelant to OEM# 16516.

Part Number: BULL-44305-R-X5 (Replaces Costco BULL-44305-X5)
Dimensions: 16 1/4” x 2 7/8”
Material: stainless steel
Weight: 16.25

$422.85
 
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44305-R Cast stainless steel heavy-duty burner for Costco model 21129.
  • Replaces original Bull part# 44305
  • Includes adjustable air shutter and a screw in the venturi for adjusting air flow.
  • Sold individually
Note: The original 44305 burner was a welded stainless steel burner. This replacement burner is a solid cast stainless burner, equivelant to OEM# 16516.

Part Number: BULL-44305-R (Replaces Costco BULL-44305)
Dimensions: 16 1/4” x 2 7/8”
Material: cast stainless steel
Weight: 4.0

$99.80
 
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21129 Cooking Grids

16517-R 5-Pack Stainless steel cooking grates for Costco model 21129.
  • SET OF FIVE (5)
  • Premium grade 304 stainless steel
  • Solid stainless rods
NOTE: Some models refer to this part as a Cooking Grid.

This part replaces original BULL part# 16517.



Part Number: BULL-16517-R-X5 (Replaces Costco BULL-16517-X5)
Dimension Front-to-Back: 19 1/2”
Dimension Side-to-Side: 7 1/2”
Material: stainless steel
Weight: 25.00

$385.00
 
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16517-R Stainless steel cooking grate for Costco model 21129.
  • Premium grade 304 stainless steel
  • Solid stainless rods
  • Sold individually
NOTE: Some models refer to this part as a Cooking Grid.

This part replaces original BULL part# 16517.



Part Number: BULL-16517-R (Replaces Costco BULL-16517)
Dimension Front-to-Back: 19 1/2”
Dimension Side-to-Side: 7 1/2”
Material: stainless steel
Weight: 5.00

$83.99
 
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21129 Heat Plates

16521-R 5-PACK Premium grade stainless steel flame tamers for Costco model 21129.
  • Replacement for original Bull part# 16521.
  • Fits Bull-made 4 and 5-Burner grills.
  • One required for each burner.
  • Sold as a set of five (5).


Part Number: BULL-16521-R-X5 (Replaces Costco BULL-16521-X5)
Dimension Front-to-Back: 17 5/8”
Dimension Side-to-Side: 4 5/8”
Material: stainless steel
Weight: 4.5

$192.75
 
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16521-R Premium grade stainless steel flame tamer for Costco model 21129.
  • Replacement for original Bull part# 16521.
  • Fits Bull-made 4 and 5-Burner grills.
  • SOLD INDIVIDUALLY.


Part Number: BULL-16521-R (Replaces Costco BULL-16521)
Dimension Front-to-Back: 17 5/8”
Dimension Side-to-Side: 4 5/8”
Material: stainless steel
Weight: .90

$47.13
 
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21129 Accessories

GrillPro Wood chips from genuine oak whiskey barrels.
  • All natural wood smoke flavor
  • Great for use in BBQ's or smokers.
  • 170 cubic inches (2 lbs. approx) in resealable bag

Try with beef, burgers, pork, lamb, poultry, and fish.

Part Number: 00215
Weight: 2.0

$9.34
 
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Extra long stainless steel fork with ergonomically correct handles. 20 1/2” long.

Part Number: ITF-2
Dimensions: 20 1/2
Material: stainless steel
Weight: 0.3

$13.80
 
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Universal 6 piece chrome plated skewer set. Designed so food does not rotate. Great for kabobs! 19 1/2” long.

Part Number: SR-7B
Dimensions: 19 1/2
Material: chrome steel
Weight: 1.0

$14.27
 
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GrillPro EZ Check Gas level indicator. Accurate from -22° to 104°F. Magnetic back. Works on all sizes of tanks.

This tank gauge will monitor your propane level, while you grill, and let's you know when you're running low on gas.

The magnetic tank gauge offers fast, accurate propane level monitoring for any size LP tank. The magnetic backing makes it easy to attach, remove, and reuse across multiple tanks—perfect for grilling, camping, patio heaters, and more

Part Number: 00030
Weight: 0.1


$7.60
 
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Beer Can Chicken Roaster. Stainless steel.

Just place any 12 oz can into the center frame and put your spiced chicken cavity over the can and then put on the grill or oven, Infuses with flavors from various beverage in the can, Like Beer, Juice, Wine, etc. Your chicken will impart a different flavor! After use, the racks can be cleaned easily.



Part Number: CCR
Weight: 1.0

$8.64
 
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Grill Mitt With Neoprene Palm.

16 in. silicone mitt diffuses heat away from the hand and washes easily. Black palm / red colored cuff. Cotton lined.
*One Size Fits Most



Part Number: 90963
Weight: 0.2

$17.59
 
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Costco gas grill 21129 - Tuesday, Oct 7 2025

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More Costco grill models we have parts for
CGR30LP | CGR30NG | CGR44 | CGR54 | CS784LP | CS812 | CS812LP | CS892LP | GSC3218WA | GSC3218WAN | GSS2116B-1 | PC-2600L | PC-2600L (pre 2006) | PCA-2600L | PCA-2600L (pre 2006) | SGIR27LP | SGR27LP | SGR30 | SGR30M | SGR30MLP | Steadfast Two | TGR30LP | TGR38 | 1500111 | 1500131 | 2001SS-LP | 210001-LP | 21009 | 21011 | 21118 | 21118CE | 21119 | 21119CE | 21128 | 21128CE | 21129CE | 44328 | 44329 | 463230703 | 463241205 | 463242304 | 463269806 | 464246004 | 466242404 | 466242504 | 527036 | 720-0008-LP | 720-0011 | Complete list of Costco grill models...



*Orders for Costco grill model 21129 $49 and over ship free to the lower 48 states.
See shipping policy below for more info.


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Build Date: Oct 7 2025