The reservoir tank gives the cooling system room to breathe: coolant expands into the tank as the engine heats and draws back to the radiator as it cools, keeping the system full, pressurized, and free of air pockets. This HDPE tank carries a semi-transparent body so level checks take a glance, a molded sensor port that ships plugged if your van does not use it, pre-molded mounting tabs for a direct factory fit, and a 34 mm screw-on neck that accepts standard 15 psi caps. The live page rates the install at under 30 minutes, and that is realistic with hand tools.
The live page's failure signs are the classic ones: cracks in age-brittled plastic, yellowing that hides the coolant level, a sweet coolant odor in the engine bay, and sudden unexplained fluid loss. Heat cycling slowly embrittles HDPE over a decade, and these vans are all past that mark, so tanks crack along seams and around mounting points even without impact.
| Detail | Description |
|---|---|
| INCLUDED | The reservoir tank with molded mounting tabs and the plugged sensor port. |
| NOT INCLUDED | The pressure cap (any OEM or aftermarket 15 psi cap fits, per the live FAQ), hoses, clamps, sensor, and coolant. |
| Tools You Need | Basic hand tools and a drain pan; the live page's under-30-minutes estimate holds for most driveway installs. |
| Detail | Description |
|---|---|
| Mazda 5 (2006 to 2015) | Per the live page, both US generations, year matched at order |
| First generation (2006 to 2010) | Direct application, donor generation |
| Second generation (2012 to 2015) | Confirmed against your year before shipping |
| Donor Reference | 2006 Mazda 5 |
Call (240) 301-0095 with your VIN and year. We confirm the tank matches your generation's mounting and hose layout and remind you about the 15 psi cap before the order ships.
This is a used OEM tank, inspected before shipping:
| Material | High-density polyethylene (HDPE) |
|---|---|
| Coolant Type | FL22 or compatible ethylene glycol-based coolant |
| Fill Neck Diameter | 34 mm |
| Tank Volume | 1.0-1.25 quarts |
| Weight Empty | 0.8-1.2 lbs |
| Application | Mazda 5 2006 to 2015, reference donor 2006 |
| Sku | vaz644 |
| Price | $75.00 |
To file a claim, contact us within 15 days of delivery at (240) 301-0095 or support@vazautosolutions.com.
