Auxiliary Water Tanks
The auxiliary (expansion) tank holds extra coolant as the engine heats up and lets air escape from the cooling system. Cracked or discoloured tanks are a common replacement on older trucks.
What We Supply
- Plastic coolant expansion tanks
- Tanks with level-sensor port
- Pressure caps
- Mounting brackets
For Distributors
- Translucent body for easy coolant-level checks
- Supplied with or without cap
- Can be combined with coolant hoses in the same order
Illustration · photos of current stock on requestEngine Drive & CoolingHow Ordering Works
Pricing, MOQ and lead time are confirmed for each item at the quotation stage.
Send your list
A parts list, photos, samples or the vehicle makes you serve — any format.
Get a quote
Pricing, MOQ and lead time for each item, confirmed at the quotation stage.
Approve samples
Check fit and finish before the bulk order.
Consolidated shipment
Mixed truck parts packed and shipped together.
More Engine Drive & Cooling Parts
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Fan Belts
V-belts and multi-ribbed belts for fan, alternator and water-pump drives.
- Classic and narrow V-belts
- Multi-ribbed (poly-V) belts
- Cogged raw-edge belts

Tensioner Pulleys
Automatic tensioners and idler pulleys for accessory belt drives.
- Automatic belt tensioners
- Idler and deflection pulleys
- Smooth and grooved pulley faces

Fan Blades
Engine cooling fans for truck and bus radiators.
- Plastic (nylon) fan blades
- Steel fan blades
- Fans for viscous-clutch drives

Truck Water Hoses
Radiator, heater and bypass hoses for the cooling circuit.
- Upper and lower radiator hoses
- Heater hoses
- Moulded and straight hoses
Request a Quote for Auxiliary Water Tanks
Send your parts list, photos or samples. We'll reply with pricing, MOQ and lead time.