MiMi Auto Parts
EXPANSION TANK, Moca

EXPANSION TANK

Brand: Moca

SKU: 100123

Category: COOLING, WATER BOTTLE

R287,50 incl. 15% VAT

✓ In stock, ships nationwide via The Courier Guy

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Fitment: Fits selected models across Audi, Seat, and Volkswagen. Confirm exact fitment before ordering.

Product Description

This Moca expansion tank is designed for the cooling system of select Audi, Seat, and Volkswagen vehicles. The expansion tank, also known as a cooling water bottle, plays a critical role in maintaining optimal coolant levels and pressure within your engine's cooling circuit. It features multiple hose connection ports, an integrated mounting system, and clearly marked fill indicators for easy monitoring of coolant levels.

Fitment covers various models from Audi, Seat, and Volkswagen, including popular vehicles such as the Audi A3, Q3, TT, and several Volkswagen models. As compatibility can vary with model year, engine size, and engine code, it is essential to confirm these details before ordering to ensure the correct fit for your vehicle.

A faulty expansion tank can lead to several problems, including visible coolant leaks, frequent low coolant warnings, overheating, or a drop in coolant pressure. You may also notice steam from under the bonnet, cracked or swollen tank material, or a persistent smell of coolant around the engine bay.

Replacement is recommended if you observe any cracks, leaks, or if the tank becomes discoloured and brittle over time. Always address issues promptly to prevent overheating and potential engine damage. Ensure you use the correct coolant type, as specified by your vehicle manufacturer, when refilling after installation.

Order your replacement expansion tank from MiMi Auto Parts for reliable delivery anywhere in South Africa. Our knowledgeable team is ready to assist, but please double-check your vehicle model, year, engine size, and engine code before purchasing to guarantee compatibility.

Common signs this part may need replacement

  • Coolant leaks around the expansion tank
  • Frequent low coolant warnings
  • Engine overheating
  • Visible cracks or swelling on the tank
  • Coolant smell in the engine bay
  • Steam escaping from the tank area
  • Discoloured or brittle plastic reservoir
  • Loss of coolant pressure
  • Air bubbles in the coolant reservoir

Typical replacement guidance

Replace the expansion tank if you notice any cracks, leaks, or signs of deterioration, or if the tank is unable to maintain proper coolant pressure. Timely replacement helps prevent engine overheating and further cooling system issues.

Why timely replacement matters

A damaged or leaking expansion tank can cause loss of coolant and engine overheating, which may lead to costly repairs. Timely replacement ensures your cooling system functions efficiently, protecting your engine.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

  • AUDI A3 / S3 (8P1) 2003 – 2012 1.4 TFSI (CAXC|CMSA) – 92 kW / 125 HP
  • AUDI A3 / S3 (8P1) 2003 – 2012 1.6 TDI (CAYC) – 77 kW / 105 HP
  • AUDI A3 / S3 (8P1) 2003 – 2012 1.8 TFSI (BYT|BZB|CDAA) – 118 kW / 160 HP
  • AUDI A3 / S3 (8P1) 2003 – 2012 1.9 TDI (BKC|BLS|BXE) – 77 kW / 105 HP
  • AUDI A3 / S3 (8P1) 2003 – 2012 2.0 FSI (AXW|BLR|BLX|BLY|BMB|BVY|BVZ) – 110 kW / 150 HP
  • AUDI A3 / S3 (8P1) 2003 – 2012 2.0 TDI 16V (BKD|CBAB|CFFB|CLJA) – 103 kW / 140 HP
  • AUDI A3 / S3 (8P1) 2003 – 2012 2.0 TFSI (AXX|BWA|CAWB|CCZA) – 147 kW / 200 HP
  • AUDI A3 / S3 (8P1) 2003 – 2012 3.2 V6 quattro (BDB|BMJ|BUB) – 184 kW / 250 HP
  • AUDI A3 / S3 (8P1) 2003 – 2012 S3 quattro (BZC|CDLC) – 188 kW / 256 HP
  • AUDI A3 / S3 Sportback (8PA) 2005 – 2013 1.4 TFSI (CAXC|CMSA) – 92 kW / 125 HP
  • AUDI A3 / S3 Sportback (8PA) 2005 – 2013 1.6 TDI (CAYC) – 77 kW / 105 HP
  • AUDI A3 / S3 Sportback (8PA) 2005 – 2013 1.8 TFSI (BYT|BZB|CDAA) – 118 kW / 160 HP
  • AUDI A3 / S3 Sportback (8PA) 2005 – 2013 1.9 TDI (BKC|BLS|BXE) – 77 kW / 105 HP
  • AUDI A3 / S3 Sportback (8PA) 2005 – 2013 2.0 FSI (AXW|BLR|BLX|BLY|BMB|BVY|BVZ) – 110 kW / 150 HP
  • AUDI A3 / S3 Sportback (8PA) 2005 – 2013 2.0 TDI 16V (BKD|CBAB|CFFB|CLJA) – 103 kW / 140 HP
  • AUDI A3 / S3 Sportback (8PA) 2005 – 2013 2.0 TFSI (AXX|BWA|CAWB|CBFA|CCZA) – 147 kW / 200 HP
  • AUDI A3 / S3 Sportback (8PA) 2005 – 2013 3.2 V6 quattro (BDB|BMJ|BUB) – 184 kW / 250 HP
  • AUDI A3 / S3 Sportback (8PA) 2005 – 2013 S3 quattro (CDLC) – 188 kW / 256 HP
  • AUDI A3 Convertible (8P7) 2008 – 2013 1.8 TFSI (BZB|CDAA) – 118 kW / 160 HP
  • AUDI A3 Convertible (8P7) 2008 – 2013 2.0 TFSI (CAWB|CCZA) – 147 kW / 200 HP
  • AUDI Q3 (8UB, 8UG) 2012 – 2019 1.4 TFSI (CHPB|CZDA|CZEA) – 110 kW / 150 HP
  • AUDI Q3 (8UB, 8UG) 2012 – 2019 2.0 TDI (CFFB|CLJA) – 103 kW / 140 HP
  • AUDI Q3 (8UB, 8UG) 2012 – 2019 2.0 TDI (CUVC|DBBA|DFTA) – 110 kW / 150 HP
  • AUDI Q3 (8UB, 8UG) 2012 – 2019 2.0 TDI quattro (CFGC|CLLB) – 130 kW / 177 HP
  • AUDI Q3 (8UB, 8UG) 2012 – 2019 2.0 TDI quattro (CUVC|DFTA) – 110 kW / 150 HP
  • AUDI Q3 (8UB, 8UG) 2012 – 2019 2.0 TDI quattro (CUWA|CYLA|DFUA) – 135 kW / 184 HP
  • AUDI Q3 (8UB, 8UG) 2012 – 2019 2.0 TFSI quattro (CCZC) – 125 kW / 170 HP
  • AUDI Q3 (8UB, 8UG) 2012 – 2019 2.0 TFSI quattro (CPSA) – 155 kW / 211 HP
  • AUDI Q3 (8UB, 8UG) 2012 – 2019 2.0 TFSI quattro (CULB) – 132 kW / 180 HP
  • AUDI TT (8J3) 2006 – 2015 1.8 TFSI (CDAA) – 118 kW / 160 HP
  • AUDI TT (8J3) 2006 – 2015 2.0 TFSI (BWA) – 147 kW / 200 HP
  • AUDI TT (8J3) 2006 – 2015 2.0 TFSI (CESA) – 155 kW / 211 HP
  • AUDI TT (8J3) 2006 – 2015 2.0 TFSI quattro (CESA|CETA) – 155 kW / 211 HP
  • AUDI TT (8J3) 2006 – 2015 2.0 TTS quattro (CDLA|CDMA) – 195 kW / 265 HP
  • AUDI TT (8J3) 2006 – 2015 3.2 V6 quattro (BUB|CBRA) – 184 kW / 250 HP
  • AUDI TT Roadster (8J9) 2007 – 2014 2.0 TFSI (BWA) – 147 kW / 200 HP
  • AUDI TT Roadster (8J9) 2007 – 2014 2.0 TFSI (CESA) – 155 kW / 211 HP
  • AUDI TT Roadster (8J9) 2007 – 2014 2.0 TFSI quattro (CESA|CETA) – 155 kW / 211 HP
  • AUDI TT Roadster (8J9) 2007 – 2014 2.0 TTS quattro (CDLA|CDMA) – 195 kW / 265 HP
  • AUDI TT Roadster (8J9) 2007 – 2014 3.2 V6 quattro (BUB|CBRA) – 184 kW / 250 HP
  • SEAT ALTEA (5P1) 2004 – 2026 2.0 FSI (BLR|BLY|BVY|BVZ) – 110 kW / 150 HP
  • SEAT ALTEA (5P1) 2004 – 2026 2.0 TDI (BMM) – 103 kW / 140 HP
  • SEAT ALTEA (5P1) 2004 – 2026 2.0 TDI 16V (BKD|CFHC) – 103 kW / 140 HP
  • SEAT LEON (1P1) 2005 – 2012 2.0 FSI (BLR|BLY|BVY|BVZ) – 110 kW / 150 HP
  • SEAT LEON (1P1) 2005 – 2012 2.0 TDI (BMM) – 103 kW / 140 HP
  • SEAT LEON (1P1) 2005 – 2012 2.0 TDI 16V (BKD|CFHC|CLCB) – 103 kW / 140 HP
  • SEAT LEON (1P1) 2005 – 2012 2.0 TFSI (BWA) – 147 kW / 200 HP
  • SEAT LEON (1P1) 2005 – 2012 2.0 TFSI (BWJ|CDLD) – 177 kW / 240 HP
  • VOLKSWAGEN BEETLE (5C1, 5C2) 2011 – 2026 1.2 TSI (CBZB) – 77 kW / 105 HP
  • VOLKSWAGEN BEETLE (5C1, 5C2) 2011 – 2026 1.4 TSI (CAVD|CNWA|CTHD|CTKA) – 118 kW / 160 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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