MiMi Auto Parts
HOSE EXPANSION TANK TO RADIATOR, Cooltec

HOSE EXPANSION TANK TO RADIATOR

Brand: Cooltec

SKU: 421335

Category: COOLING, RADIATOR HOSE

R524,40 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 selected BMW models, forming a vital part of your vehicle's cooling system. Designed for precise routing, it features reinforced rubber segments and a quick-connect fitting for secure attachment and efficient coolant flow. Proper function of this hose ensures that coolant moves smoothly between the expansion tank and radiator, helping regulate engine temperature.

This hose is compatible with certain BMW models, including E82, E88, E90, and X1 E84 series with engines such as 135i, 335i, and 20i N54. Always confirm your BMW's model, year, engine size, and engine code before ordering to ensure correct fitment.

Common symptoms of a faulty expansion tank to radiator hose include coolant leaks, engine overheating, visible hose cracks or swelling, low coolant levels, steam from the engine bay, and dashboard warning lights related to the cooling system. If you notice any of these issues, it may be time to inspect this hose.

Replacement is recommended if the hose shows signs of wear, leaks, or has become brittle or swollen. Regular inspection and timely replacement can prevent unexpected breakdowns and costly engine damage.

Order this Cooltec cooling radiator hose from MiMi Auto Parts for reliable nationwide delivery in South Africa. Our team is here to help you find the right part for your BMW and keep your cooling system performing as it should.

Common signs this part may need replacement

  • Coolant leaks near the expansion tank or radiator
  • Engine overheating
  • Low coolant warning light
  • Visible cracks, swelling, or brittleness in the hose
  • Steam or coolant smell from engine bay
  • Frequent need to top up coolant
  • Collapsed or soft hose sections
  • Coolant pooling under the vehicle

Typical replacement guidance

Replace the hose if you notice any leaks, cracks, swelling, or signs of deterioration. Routine inspection during cooling system maintenance is recommended, as a compromised hose can quickly lead to engine overheating.

Why timely replacement matters

Timely replacement of the expansion tank to radiator hose helps prevent coolant loss and engine overheating. Ignoring a faulty hose can result in severe engine damage and costly repairs.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

  • BMW 1 Convertible (E88) 2007 – 2013 135 i (N54 B30 A|N55 B30 A) – 225 kW / 306 HP
  • BMW 1 Coupe (E82) 2007 – 2013 135 i (N54 B30 A|N55 B30 A) – 225 kW / 306 HP
  • BMW 1 Coupe (E82) 2007 – 2013 M (N54 B30 A) – 250 kW / 340 HP
  • BMW 3 (E90) 2004 – 2011 335 i (N54 B30 A|N55 B30 A) – 225 kW / 306 HP
  • BMW 3 Convertible (E93) 2006 – 2013 335 i (N54 B30 A|N55 B30 A) – 225 kW / 306 HP
  • BMW 3 Coupe (E92) 2006 – 2013 335 i (N54 B30 A|N55 B30 A) – 225 kW / 306 HP
  • BMW 3 Touring (E91) 2004 – 2012 335 i (N54 B30 A|N55 B30 A) – 225 kW / 306 HP
  • BMW X1 (E84) 2009 – 2015 sDrive 20 i (N20 B20 A) – 135 kW / 184 HP
  • BMW X1 (E84) 2009 – 2015 xDrive 20 i (N20 B20 A) – 135 kW / 184 HP
  • BMW X1 (E84) 2009 – 2015 xDrive 28 i (N20 B20 A) – 180 kW / 245 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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