MiMi Auto Parts
HOSE EXPANSION TANK TO RADIATOR, Cooltec

HOSE EXPANSION TANK TO RADIATOR

Brand: Cooltec

SKU: 421336

Category: COOLING, RADIATOR HOSE

R517,50 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, playing a crucial role in your BMW’s cooling system. Designed to handle the constant flow of coolant, it helps regulate engine temperature by allowing coolant to circulate effectively between the expansion tank and the radiator. The hose features a contoured design with integrated connectors and reinforcement for a secure, leak-resistant fit.

This part is intended for BMW models equipped with specific N52 and N62 engines, commonly found in the E60, E61, E63, and E64 series. It is essential to double-check your vehicle’s model, year, engine size, and engine code to ensure compatibility before purchasing.

Common symptoms of a failing expansion tank to radiator hose include visible coolant leaks, low coolant levels, overheating, or swelling and softening of the hose. You may also notice steam from the engine bay or a persistent coolant warning light on your dashboard.

Replacement is recommended if you observe cracks, leaks, or signs of wear on the hose. Regular inspection is important, especially if your BMW is experiencing cooling issues or has high mileage. Always replace with a part designed for your specific engine and model to ensure proper fitment and performance.

Trust MiMi Auto Parts for reliable cooling system components. We offer nationwide delivery throughout South Africa and are available to assist with any queries. Please confirm all vehicle details before ordering to avoid any fitment issues.

Common signs this part may need replacement

  • Coolant leaks near the hose or under the vehicle
  • Engine overheating
  • Low coolant level warnings
  • Soft or swollen hose sections
  • Visible cracks or splits in the hose
  • Steam from the engine bay
  • Coolant smell around the engine
  • Frequent need to top up coolant
  • Coolant staining on nearby components

Typical replacement guidance

Replace the expansion tank to radiator hose if you notice leaks, cracks, or softness, as these indicate deterioration. It is also advisable to replace the hose during major cooling system maintenance or when replacing the radiator or expansion tank.

Why timely replacement matters

A worn or leaking hose can cause coolant loss and engine overheating, risking severe engine damage. Timely replacement ensures your cooling system remains reliable and your engine is protected.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

  • BMW 5 (E60) 2001 – 2010 523 i (N52 B25 A|N52 B25 B|N52 B25 BE) – 130 kW / 177 HP
  • BMW 5 (E60) 2001 – 2010 523 i (N52 B25 A|N52 B25 BE) – 140 kW / 190 HP
  • BMW 5 (E60) 2001 – 2010 523 i (N53 B25 A) – 140 kW / 190 HP
  • BMW 5 (E60) 2001 – 2010 525 i (N52 B25 A|N52 B25 B|N52 B25 BF) – 160 kW / 218 HP
  • BMW 5 (E60) 2001 – 2010 525 xi (N52 B25 A) – 160 kW / 218 HP
  • BMW 5 (E60) 2001 – 2010 530 i (N52 B30 A|N52 B30 BF) – 190 kW / 258 HP
  • BMW 5 (E60) 2001 – 2010 530 i (N52 B30 A|N52 B30 BF) – 200 kW / 272 HP
  • BMW 5 (E60) 2001 – 2010 530 i (N53 B30 A) – 200 kW / 272 HP
  • BMW 5 (E60) 2001 – 2010 545 i (N62 B44 A) – 245 kW / 333 HP
  • BMW 5 Touring (E61) 2004 – 2010 523 i (N52 B25 A|N52 B25 B|N52 B25 BE) – 130 kW / 177 HP
  • BMW 5 Touring (E61) 2004 – 2010 530 i (N52 B30 A) – 200 kW / 272 HP
  • BMW 5 Touring (E61) 2004 – 2010 530 i (N52 B30 A|N52 B30 BF) – 190 kW / 258 HP
  • BMW 5 Touring (E61) 2004 – 2010 530 i (N53 B30 A) – 200 kW / 272 HP
  • BMW 5 Touring (E61) 2004 – 2010 545 i (N62 B44 A) – 245 kW / 333 HP
  • BMW 6 Convertible (E64) 2004 – 2010 645 Ci (N62 B44 A) – 245 kW / 333 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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