MiMi Auto Parts
HOSE EXPANSION TANK TO RADIATOR, Cooltec

HOSE EXPANSION TANK TO RADIATOR

Brand: Cooltec

SKU: 400124

Category: COOLING, RADIATOR HOSE

R561,20 incl. 15% VAT

✓ In stock, ships nationwide via The Courier Guy

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

Product Description

This Cooltec hose connects the expansion tank to the radiator in your BMW's cooling system, ensuring a reliable pathway for coolant flow. Designed specifically for BMW models, it features a moulded construction with a plastic quick-connect fitting and integrated mounting bracket, providing a secure and leak-resistant connection. Proper fitment is essential for maintaining optimal engine temperature and preventing overheating.

Compatible with selected BMW 1 Series (E81, E82, E87, E88), 3 Series (E90), and X1 (E84) models, including 118i, 120i, 320i, and 18i variants. Always confirm your vehicle’s model, year, engine size, and engine code before ordering to ensure compatibility.

Common symptoms of a failing expansion tank to radiator hose include visible coolant leaks, low coolant levels, overheating, swelling or cracks in the hose, engine temperature fluctuations, and a soft or spongy feel to the hose. You may also notice steam from the engine bay or the coolant warning light illuminating on your dashboard.

It is advisable to replace this hose at the first sign of wear, leaks, or damage, as it plays a crucial role in the cooling system. Regular inspection during service intervals can help prevent unexpected breakdowns and costly engine repairs.

Order your Cooltec hose from MiMi Auto Parts for nationwide delivery across South Africa. Trust MiMi for accurate fitment guidance and quality automotive parts to keep your BMW running reliably.

Common signs this part may need replacement

  • Coolant leaks near the hose connections
  • Low coolant warning light
  • Engine overheating
  • Swollen or cracked hose
  • Steam from the engine bay
  • Fluctuating engine temperature gauge
  • Coolant smell around the bonnet area
  • Visible coolant residue on or around the hose
  • Soft or spongy feel when pressing the hose
  • Loss of coolant pressure

Typical replacement guidance

Replace the expansion tank to radiator hose if you notice cracks, swelling, leaks, or if it feels soft to the touch. Timely replacement helps prevent coolant loss and engine overheating, especially as hoses age and become brittle.

Why timely replacement matters

A worn or leaking hose can cause coolant loss, leading to engine overheating and potential engine damage. Timely replacement ensures your cooling system remains sealed and efficient.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

  • BMW 1 Convertible (E88) 2007 – 2013 120 i (N46 B20 B|N46 B20 C|N46 B20 E) – 115 kW / 156 HP
  • BMW 3 (E90) 2004 – 2011 320 i (N43 B20 A) – 125 kW / 170 HP
  • BMW 3 (E90) 2004 – 2011 320 i (N46 B20 B|N46 B20 BD|N46 B20 C|N46 B20 CB) – 110 kW / 150 HP
  • BMW 3 (E90) 2004 – 2011 320 i (N46 B20 B|N46 B20 C|N46 B20 CC|N46 B20 CD|N46 B20 E) – 115 kW / 156 HP
  • BMW 3 Convertible (E93) 2006 – 2013 320 i (N46 B20 B|N46 B20 E) – 115 kW / 156 HP
  • BMW 3 Coupe (E92) 2006 – 2013 320 i (N43 B20 A) – 125 kW / 170 HP
  • BMW 3 Coupe (E92) 2006 – 2013 320 i (N46 B20 B) – 115 kW / 156 HP
  • BMW 3 Touring (E91) 2004 – 2012 320 i (N46 B20 B|N46 B20 BD|N46 B20 C) – 115 kW / 156 HP
  • BMW 3 Touring (E91) 2004 – 2012 320 i (N46 B20 B|N46 B20 C) – 110 kW / 150 HP
  • BMW X1 (E84) 2009 – 2015 sDrive 18 i (N46 B20 B|N46 B20 BD|N46 B20 C|N46 B20 CC|N46 B20 CD|N46 B20 E) – 110 kW / 150 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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