Dayco Engine Expansion Tank DET0039
The Dayco Engine Expansion Tank is a direct OE-specification replacement for vehicles where the cooling system pressure cap is housed on the expansion tank rather than the radiator.
- Essential cooling system component — always under pressure, with the pressure cap located on the tank itself
- Positioned at the highest point in the cooling system to allow continuous coolant cycling
- Hot coolant pressure fills the upper half of the tank and acts to push coolant back into the system
- Replaces tanks that have become discoloured, brittle, contaminated with sludge, or cracked
- Manufactured to OE specifications for make/model-specific fitment
- Backed by a 2-year/40,000 km warranty
Immediate replacement is required when a tank is compromised to maintain effective cooling system operation.
| SKU | DET0039 |
| Model # | DET0039 |
| Barcode # | 9325361325045 |
| Brand | Dayco |
| Placement On Vehicle | Engine |
| Warranty | 2 Years/40,000km |
| Type | Coolant Expansion Tank |
| Manufacturer Part Number | DET0039 |
| Position On Vehicle | Engine |
| Contains Liquid | No |

- One of the largest Automotive companies in Australia.
- Dayco products are of the highest quality with OE spec parts
- Dayco supply a variety of parts to the aftermarket industry including belts, pulleys, thermostats, tensioners among others.
- See our other items for more Dayco products
Packaging: Manufacturers periodically update their packaging and labelling. You may receive the current or a previous design — the product, formulation and part number are unchanged.
Fitment (vehicle-specific products): Vehicle fitment is based on manufacturer and supplier catalogue data and is kept as accurate as possible, but vehicle catalogues are not perfect. Some models had more than one part fitted depending on build date, engine, or component size/variant, and parts on older vehicles may have been replaced with non-original or different-style components.
Before you buy, compare the product images with the part currently fitted to your vehicle — check shape, size, connectors and mounting points. If the part on your vehicle looks different, please contact us before purchasing. It is the buyer's responsibility to confirm the part suits their vehicle before purchasing.
Not sure? Message us with your vehicle's registration number and state (preferred), or full VIN/build details, and we'll do our best to confirm fitment before you buy.
Parts returned because they do not suit the vehicle, where the listing matches the manufacturer's catalogue, are treated as a change of mind and must be unused, uninstalled and in original packaging. Nothing in this notice affects your rights under the Australian Consumer Law.