MiMi Auto Parts
EXPANSION TANK, Moca

EXPANSION TANK

Brand: Moca

SKU: 410005

Category: COOLING, WATER BOTTLE

R915,40 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 Moca expansion tank is a vital component of the cooling system in selected BMW models. Designed to store excess coolant and manage pressure fluctuations, it helps keep your engine running at the correct temperature. The tank features multiple hose connection points and mounting tabs for secure installation within the engine bay.

This expansion tank is compatible with various BMW vehicles, including models fitted with M62, M60, and M73 engines. Always confirm your BMW’s model, year, engine size, and engine code to ensure correct fitment before placing your order.

A failing expansion tank can manifest through visible coolant leaks, low coolant warnings, or overheating. Other symptoms may include coolant odour in the engine bay, steam from under the bonnet, or cracks in the reservoir. Addressing these issues promptly helps prevent more severe engine problems.

Replace your expansion tank if you notice any leaks, cracks, or signs of brittleness, or if your cooling system is struggling to maintain proper pressure. Regular inspection is recommended, especially as the vehicle ages or after any cooling system repairs.

Order your BMW expansion tank from MiMi Auto Parts for peace of mind and reliable nationwide delivery in South Africa. Our team is here to assist you in finding the right part for your vehicle.

Common signs this part may need replacement

  • Coolant leaking near the expansion tank
  • Visible cracks or brittleness in the tank
  • Frequent low coolant warnings
  • Engine overheating
  • Coolant odour in the engine bay
  • Steam or vapour from under the bonnet
  • Unstable coolant levels
  • Coolant stains around the tank or hoses

Typical replacement guidance

Replace the expansion tank if you notice leaks, cracks, or signs of ageing plastic, or if the tank fails to maintain system pressure. It is also advisable to replace the tank during major cooling system repairs or after an overheating incident.

Why timely replacement matters

Timely replacement of the expansion tank prevents coolant loss and engine overheating, protecting critical engine components. Neglecting this part can lead to costly repairs and reduced vehicle reliability.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

  • BMW 5 (E39) 1995 – 2003 540 i (M62 B44 (448S1)|M62 B44 (448S2)) – 210 kW / 286 HP
  • BMW 5 Touring (E39) 1996 – 2004 540 i (M62 B44 (448S1)|M62 B44 (448S2)) – 210 kW / 286 HP
  • BMW 7 (E38) 1994 – 2001 730 i, iL (M60 B30 (308S1)) – 155 kW / 211 HP
  • BMW 7 (E38) 1994 – 2001 730 i, iL (M60 B30 (308S1)) – 160 kW / 218 HP
  • BMW 7 (E38) 1994 – 2001 735 i, iL (M62 B35 (358S1)) – 173 kW / 235 HP
  • BMW 7 (E38) 1994 – 2001 740 i, iL (M60 B40 (408S1)) – 210 kW / 286 HP
  • BMW 7 (E38) 1994 – 2001 740 i, iL (M62 B44 (448S1)|M62 B44 (448S2)) – 210 kW / 286 HP
  • BMW 7 (E38) 1994 – 2001 750 i, iL (M73 B54 (54121)|M73 B54 (54122)) – 240 kW / 326 HP
  • BMW 8 (E31) 1990 – 1999 840 i (M60 B40 (408S1)) – 210 kW / 286 HP
  • BMW 8 (E31) 1990 – 1999 850 i, Ci (M70 B50 (5012A)) – 220 kW / 300 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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