MiMi Auto Parts
EXPANSION TANK, Cooltec

EXPANSION TANK

Brand: Cooltec

SKU: 650119

Category: COOLING, WATER BOTTLE

R460,00 incl. 15% VAT

✓ In stock, ships nationwide via The Courier Guy

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Fitment: Fits selected Opel models. Confirm exact fitment before ordering.

Product Description

The Cooltec Expansion Tank is an essential component in your Opel's cooling system, designed to safely manage coolant overflow and maintain optimal engine temperature. Constructed from durable translucent plastic, this expansion tank allows for easy monitoring of coolant levels and ensures proper circulation throughout the system. Its robust design features multiple hose connection ports and integrated mounting tabs, making it a direct fit for compatible Opel models.

This expansion tank is specifically suited for Opel Astra H models with 1.4, 1.6, 1.8, 1.9, or 2.0 engines manufactured between 2004 and 2014. It is important to confirm your vehicle's model, year, engine size, and engine code before ordering to ensure correct fitment.

Common signs of a failing expansion tank include visible coolant leaks, frequent low coolant warnings, overheating, or a noticeable drop in coolant levels. You may also observe cracks or discoloration in the tank, or experience poor heater performance due to insufficient coolant circulation.

If you notice any of these symptoms, replacing the expansion tank promptly helps prevent further damage to your engine and cooling system. Always check compatibility and consult your vehicle's specifications before purchase.

Order your Cooltec Expansion Tank from MiMi Auto Parts for reliable service and nationwide delivery across South Africa. Our team is ready to help you find the right part for your Opel, ensuring your vehicle stays cool and running smoothly.

Common signs this part may need replacement

  • Coolant leaks around the expansion tank
  • Frequent low coolant warnings
  • Engine overheating
  • Visible cracks or discolouration on the tank
  • Coolant smell under the bonnet
  • Poor heater performance
  • Bubbling or gurgling noises from the tank
  • Coolant level dropping without visible leaks

Typical replacement guidance

Replace the expansion tank if you notice cracks, leaks, or persistent coolant loss. Timely replacement helps maintain correct coolant pressure and prevents overheating, safeguarding your engine.

Why timely replacement matters

A faulty expansion tank can lead to coolant loss and engine overheating, resulting in costly repairs. Timely replacement ensures your cooling system operates efficiently and reliably.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

  • OPEL ASTRA H (A04) 2004 – 2011 1.4 (L48) (Z 14 XEP) – 66 kW / 90 HP
  • OPEL ASTRA H (A04) 2004 – 2011 1.6 (L48) (A 16 XER|Z 16 XER) – 85 kW / 116 HP
  • OPEL ASTRA H (A04) 2004 – 2011 1.6 (L48) (Z 16 XE1|Z 16 XEP) – 77 kW / 105 HP
  • OPEL ASTRA H (A04) 2004 – 2011 1.8 (L48) (A 18 XER|Z 18 XER) – 103 kW / 140 HP
  • OPEL ASTRA H (A04) 2004 – 2011 1.8 (L48) (Z 18 XE) – 92 kW / 125 HP
  • OPEL ASTRA H (A04) 2004 – 2011 1.9 CDTI 16V (L48) (Z 19 DTJ) – 88 kW / 120 HP
  • OPEL ASTRA H GTC (A04) 2005 – 2010 1.8 (L08) (A 18 XER|Z 18 XER) – 103 kW / 140 HP
  • OPEL ASTRA H GTC (A04) 2005 – 2010 1.9 CDTi (L08) (Z 19 DTH) – 110 kW / 150 HP
  • OPEL ASTRA H GTC (A04) 2005 – 2010 2.0 OPC (L08) (Z 20 LEH) – 177 kW / 240 HP
  • OPEL ASTRA H GTC (A04) 2005 – 2010 2.0 Turbo (L08) (Z 20 LER) – 147 kW / 200 HP
  • OPEL ASTRA H TwinTop (A04) 2007 – 2009 1.8 (L67) (A 18 XER|Z 18 XER) – 103 kW / 140 HP
  • OPEL ASTRA H TwinTop (A04) 2007 – 2009 2.0 Turbo (L67) (Z 20 LER) – 147 kW / 200 HP

Fitment support

Not sure if this part fits your vehicle? Contact MiMi Auto Parts with your vehicle make, model, year, and engine code before ordering and we will help confirm fitment.

Installation note

Cooling system work involves draining and refilling coolant and may require specialised tools. Professional installation is recommended to ensure correct coolant mixture, bleeding of air from the system, and leak-free connections.

Frequently Asked Questions

What are the signs of a failing water pump?

Common signs may include coolant leaks near the front of the engine, engine overheating, a whining or grinding noise from the water pump area, or coolant loss without visible external leaks. Diagnosis should be confirmed before replacement.

Can I drive with a coolant leak?

Driving with a coolant leak is not recommended. Loss of coolant can lead to engine overheating and potentially serious engine damage. The vehicle should be inspected and the leak repaired before further driving.

Does this part fit my vehicle?

Please check the vehicle compatibility section on this page and confirm your vehicle make, model, year, engine size, and engine code before ordering. If you are unsure, contact MiMi Auto Parts before checkout.

Is the price VAT-inclusive?

Yes, product prices on MiMi Auto Parts are shown inclusive of VAT where applicable.

Do you deliver across South Africa?

Yes, MiMi Auto Parts delivers nationwide in South Africa. Delivery cost and estimated timing are calculated during checkout based on your location.

Is professional installation recommended?

Professional installation is recommended for safety-critical and technical parts such as airbag, clock spring, brakes, suspension, steering, clutch, cooling, engine, and electrical components. For guidance specific to this part, see the installation note on this page.

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