Canon GI-21 bottle-number guide
Canon GI-21 ink bottles are best matched by color and Canon part number. This helps avoid mixing up black and color refill bottles.
GI-21 part numbers
- GI-21Bk 4526C001: black, commonly 140 ml.
- GI-21C 4537C001: cyan, commonly 70 ml.
- GI-21M 4538C001: magenta, commonly 70 ml.
- GI-21Y 4539C001: yellow, commonly 70 ml.
Buying tip
If one color is empty, replace only the needed bottle. If several tanks are low, a 4-pack or 8-pack may be easier to manage. Always confirm printer compatibility.
Shop related products
Browse Canon Ink & Toner or all Ink Bottles & Tanks.