Home > Costco Grill Models > Costco 21118
Urban Islands 4-BURNER 304 STAINLESS STEEL, ROTISSERIE, BUILT-IN, L.P. (PROPANE)
We recommend you measure your old parts and compare them to what we show below. This will help insure that you get the correct replacement parts for your Costco grill. This is best done with the old parts out of the grill. Verify your Costco grill model number.
Replacement gas grill parts for Costco model: 21118
21118 Burners
44305-R 5-Pack Cast stainless steel burners.
- 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
Material: stainless steel
Weight: 16.25
Dimensions: 16 1/4” x 2 7/8”
44305-R Cast stainless steel heavy-duty burner.
- 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
Material: cast stainless steel
Weight: 4.0
Dimensions: 16 1/4” x 2 7/8”
21118 Cooking Grates
16517-R 5-Pack Stainless steel cooking grates.
- 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.
Made in USA 
Part Number: BULL-16517-R-X5
Material: stainless steel
Weight: 25.00
Dimensions:
- Front-To-Back: 19 1/2″
- Side-To_Side: 7 1/2″
16517-R Stainless steel cooking grate.
- 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.
Made in USA
Part Number: BULL-16517-R
Material: stainless steel
Weight: 5.00
Dimensions:
- Front-To-Back: 19 1/2″
- Side-To_Side: 7 1/2″
21118 Flame Tamers
16521-R 5-PACK Premium grade stainless steel flame tamers.
- 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).
Made in USA
Replaces Costco factory part# BULL-16521-X5
Part Number: BULL-16521-R-X5
Material: stainless steel
Weight: 4.5
Dimensions:
- Front-To-Back: 17 5/8″
- Side-To_Side: 4 5/8″
16521-R Premium grade stainless steel flame tamer.
- Replacement for original Bull part# 16521.
- Fits Bull-made 4 and 5-Burner grills.
- SOLD INDIVIDUALLY.
Made in USA
Replaces Costco factory part# BULL-16521
Part Number: BULL-16521-R
Material: stainless steel
Weight: .90
Dimensions:
- Front-To-Back: 17 5/8″
- Side-To_Side: 4 5/8″
21118 Accessories
Cast iron smoker box with six oblong venting holes. Designed to release wood smoke. Make sure this part will fit into your grill before ordering 8 3/8” x 5 1/4” x 1 3/8”.
Part Number: 00150
Material: cast iron
Weight: 3.90
Dimensions: 5 1/4” x 8 3/8”
20” Professional Extra Long Tong.
20” Stainless steel tong with red soft grip rubber inserts. Grip your food on the grill with ease. Manual lock saves on storage space.
Part Number: 40269
Material: stainless steel
Weight: 0.14
$14.99
Marinade Injector.For injecting flavor and marinades into meat. Disassembles for cleaning. Stainless steel injector tip. Graduated injection chamber.
Part Number: 14950
Material: stailess steel
Weight: 0.5
Non-Stick Aluminum Griddle. 19 in. x 10.75 in. Non-stick cast aluminum double sided griddle. One flat side for frying, and a ridge side for grilling.
Part Number: 91652
Material: aluminum
Weight: 3.0
Dimensions: 19 1/2” x 10 3/4”
Abrasive scrubbing brush. Ideal for cleaning porcelain grills.
Part Number: 71448
Weight: 0.2
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Costco model 21118. If the BBQ grill part you are looking for is not listed above, make a note
of the dimensions of your original part and try searching by part category. Oct 15 2025
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