MiMi Auto Parts
EXPANSION TANK, Moca

EXPANSION TANK

Brand: Moca

SKU: 121843

Category: COOLING, WATER BOTTLE

R494,50 incl. 15% VAT

✓ In stock, ships nationwide via The Courier Guy

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

Product Description

This Moca expansion tank is designed for the cooling system of select Audi models, serving as a crucial reservoir for excess coolant. The tank helps regulate coolant levels as your engine heats up and cools down, preventing overflow and maintaining optimal pressure within the cooling system. It features a translucent plastic construction, integrated hose connection, mounting tabs, and a port for a fluid level sensor, ensuring proper fit and reliable operation in your Audi.

Fitment is specific to Audi A4 models, including B6 and B7 generations, with engines such as 1.8T, 1.9, 2.0 TDI, 2.0 TFSI, and 3.2 FSI. Always confirm your vehicle's model, year, engine size, and engine code before ordering to ensure compatibility.

Common symptoms of a failing expansion tank include coolant leaks, low coolant warnings, visible cracks or discolouration on the tank, engine overheating, fluctuating temperature readings, and persistent coolant odours. You may also notice the coolant level dropping more frequently than usual or warning lights on your dashboard.

Replace the expansion tank if you observe any signs of leakage, cracks, or if the coolant sensor is malfunctioning. Timely replacement helps prevent overheating and protects your engine from potential damage caused by coolant loss.

MiMi Auto Parts offers reliable parts for your Audi, with nationwide delivery across South Africa. Shop with confidence and keep your vehicle's cooling system in top condition.

Common signs this part may need replacement

  • Coolant leaks near the expansion tank
  • Frequent low coolant warnings
  • Visible cracks or discolouration on the tank
  • Engine overheating
  • Coolant odour in the engine bay
  • Fluctuating coolant level readings
  • Warning lights related to coolant level
  • Coolant level drops more than usual
  • Steam or moisture around the tank area

Typical replacement guidance

Replace the expansion tank if you notice leaks, cracks, or malfunctioning coolant level sensors. Regular inspection is advised, especially if your Audi is experiencing overheating or coolant loss.

Why timely replacement matters

Timely replacement of the expansion tank prevents coolant loss and overheating, protecting your engine from serious damage. A faulty tank can compromise the entire cooling system's efficiency.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

  • AUDI A4 / S4 B6 (8E2) 2001 – 2005 1.8 T (BEX) – 140 kW / 190 HP
  • AUDI A4 / S4 B6 (8E2) 2001 – 2005 1.8 T (BFB) – 120 kW / 163 HP
  • AUDI A4 / S4 B6 (8E2) 2001 – 2005 1.9 TDI (AVF|AWX) – 96 kW / 130 HP
  • AUDI A4 / S4 B6 (8E2) 2001 – 2005 2.0 (ALT) – 96 kW / 130 HP
  • AUDI A4 / S4 B6 Avant (8E5) 2002 – 2005 1.8 T (BEX) – 140 kW / 190 HP
  • AUDI A4 / S4 B6 Avant (8E5) 2002 – 2005 1.8 T (BFB) – 120 kW / 163 HP
  • AUDI A4 / S4 B6 Avant (8E5) 2002 – 2005 1.9 TDI (AVF|AWX) – 96 kW / 130 HP
  • AUDI A4 / S4 B7 (8EC) 2005 – 2009 1.8 T (BFB) – 120 kW / 163 HP
  • AUDI A4 / S4 B7 (8EC) 2005 – 2009 2.0 (ALT) – 96 kW / 130 HP
  • AUDI A4 / S4 B7 (8EC) 2005 – 2009 2.0 TDI (BRD) – 125 kW / 170 HP
  • AUDI A4 / S4 B7 (8EC) 2005 – 2009 2.0 TDI 16V (BLB|BRE) – 103 kW / 140 HP
  • AUDI A4 / S4 B7 (8EC) 2005 – 2009 2.0 TFSI (BGB|BWE) – 147 kW / 200 HP
  • AUDI A4 / S4 B7 (8EC) 2005 – 2009 2.0 TFSI quattro (BGB|BPG|BWE) – 147 kW / 200 HP
  • AUDI A4 / S4 B7 (8EC) 2005 – 2009 3.2 FSI (AUK) – 188 kW / 255 HP
  • AUDI A4 / S4 B7 (8EC) 2005 – 2009 3.2 FSI quattro (AUK) – 188 kW / 255 HP
  • AUDI A4 / S4 B7 Avant (8ED) 2005 – 2008 1.8 T (BFB) – 120 kW / 163 HP
  • AUDI A4 / S4 B7 Avant (8ED) 2005 – 2008 2.0 (ALT) – 96 kW / 130 HP
  • AUDI A4 / S4 B7 Avant (8ED) 2005 – 2008 2.0 TDI 16V (BLB|BRE) – 103 kW / 140 HP
  • AUDI A4 / S4 B7 Avant (8ED) 2005 – 2008 2.0 TFSI (BGB|BPG|BWE) – 147 kW / 200 HP
  • AUDI A4 / S4 B7 Avant (8ED) 2005 – 2008 2.0 TFSI quattro (BUL) – 162 kW / 220 HP
  • AUDI A4 / S4 B7 Avant (8ED) 2005 – 2008 3.2 FSI (AUK) – 188 kW / 255 HP
  • AUDI A4 / S4 B7 Avant (8ED) 2005 – 2008 3.2 FSI quattro (AUK|BKH) – 188 kW / 255 HP
  • AUDI A4 / S4 B7 Convertible (8HE) 2006 – 2010 2.0 TFSI 16V (BWE) – 147 kW / 200 HP
  • AUDI A4 / S4 B7 Convertible (8HE) 2006 – 2010 3.2 FSI quattro (AUK|BKH) – 188 kW / 255 HP
  • AUDI A6 / S6 C5 (4B2, 4B4) 1997 – 2004 1.8 T (AEB|ANB|APU|ARK|AWT) – 110 kW / 150 HP
  • AUDI A6 / S6 C5 (4B2, 4B4) 1997 – 2004 1.9 TDI (AVF|AWX) – 96 kW / 130 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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