The selected coolant tank’s scope is narrower than the complete ZB model range. It is listed for the 2.0L B20NFT petrol wagon, 01/2018–12/2020. A ZB badge alone does not establish that another engine or body uses this exact reservoir.
Keep that application statement with the original reference and connection photographs. Do not widen the selection from a similar tank shown in a general Commodore search.
Confirm the particular wagon application
The ZB 2.0L wagon tank with cap uses reference 23386455. Record the VIN, actual build month, body and engine code along with the original number.
VE and VF overflow bottles are different applications. The ZB 3.6L thermostat-housing guide on this site also concerns a different component and engine; its application range should not be borrowed for this reservoir.
Compare the rounded body and every connection
Match the rounded tank shape, filler neck, hose connections and mounting tabs. Use complete and reverse-side views so a similar front outline does not conceal a different outlet arrangement.
The cap’s appearance does not supply an unlisted pressure rating, and the photograph does not establish a tank capacity or an electrical specification. Ask for any missing detail necessary to confirm the actual assembly.
Read the selected supply accurately
The package contains one tank with the pictured cap. Hoses and coolant are not included. Have the workshop determine additional requirements after diagnosing the cooling complaint.
A photograph of the reservoir does not show the whole cooling-system repair. Keep the part selection separate from the question of where a leak or other fault originates.
Send a comparison that preserves the scope
Provide the VIN, build month, wagon and B20NFT identification, original reference and accessible photographs of the complete tank, outlets and mounts. Identify any feature that differs. Use the appropriate service information for fitting and cooling-system checks.
Prepared from application records and the linked product photographs. The featured workshop scene is an AI-generated editorial illustration. Information reviewed on 3 November 2026.