CAP EXPANSION TANK 1.4BAR

Name: CAP EXPANSION TANK 1.4BAR
Brand: Moca
SKU: 431421
Price: 142.6 ZAR
Availability: InStock

Brand: Moca

SKU: 431421

Category: COOLING, PRESSURE CAP

R142,60 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

The Moca CAP EXPANSION TANK 1.4BAR is a vital component in your BMW's cooling system, designed to maintain the correct pressure within the radiator and expansion tank. This pressure cap ensures the system operates at 1.4 bar, helping to prevent coolant loss and overheating during normal and demanding driving conditions.

This cooling pressure cap is suitable for select BMW models. It is important to confirm your vehicle's model, year, engine size, and engine code before purchasing to ensure proper fitment. Compatibility covers various BMW vehicles, so check your owner's manual or consult with MiMi Auto Parts if you are unsure.

A failing or worn expansion tank cap can cause several issues, including coolant leaks, overheating, or a drop in coolant system pressure. Other symptoms may include frequent low coolant warnings, visible steam from the engine bay, or a collapsed radiator hose. These signs indicate the cap may no longer be holding the correct pressure.

Replacing the expansion tank pressure cap is a straightforward but essential maintenance step when you notice symptoms of failure or during routine cooling system servicing. Always ensure you use a cap rated for the correct pressure, as specified by your vehicle manufacturer.

Shop with confidence at MiMi Auto Parts. We offer nationwide delivery across South Africa and are ready to assist you in finding the right cooling pressure cap for your BMW. Always verify compatibility before ordering to ensure a perfect fit for your vehicle.

Common signs this part may need replacement

Coolant leaking around the expansion tank cap
Engine overheating
Frequent low coolant warning lights
Visible steam from the engine bay
Collapsed radiator hose
Unusual coolant smell in the engine bay
Coolant reservoir overfilling or bubbling
Loss of cooling system pressure
Hard or swollen coolant hoses

Typical replacement guidance

Replace the expansion tank pressure cap if you notice signs of coolant leaks, overheating, or pressure loss in the cooling system. It is also recommended to change the cap during routine cooling system maintenance or whenever the cap's seal appears damaged or worn.

Why timely replacement matters

Timely replacement of a faulty cooling pressure cap prevents engine overheating and potential damage to the radiator or head gasket. Maintaining the correct system pressure ensures your BMW's cooling system works efficiently and reliably.

Vehicle Compatibility

This part is confirmed to fit the following vehicles:

BMW 1 (E81) 2006 – 2011 116 i (N45 B16 A) – 85 kW / 115 HP
BMW 1 (E81) 2006 – 2011 118 i (N46 B20 B) – 95 kW / 129 HP
BMW 1 (E81) 2006 – 2011 120 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
BMW 1 (E81) 2006 – 2011 120 i (N46 B20 B|N46 B20 C) – 115 kW / 156 HP
BMW 1 (E81) 2006 – 2011 130 i (N52 B30 A|N52 B30 B|N52 B30 BF) – 195 kW / 265 HP
BMW 1 (E87) 2004 – 2011 116 i (N45 B16 A) – 85 kW / 115 HP
BMW 1 (E87) 2004 – 2011 118 i (N46 B20 B) – 100 kW / 136 HP
BMW 1 (E87) 2004 – 2011 118 i (N46 B20 B) – 95 kW / 129 HP
BMW 1 (E87) 2004 – 2011 120 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
BMW 1 (E87) 2004 – 2011 120 i (N46 B20 A|N46 B20 B|N46 B20 BD|N46 B20 C|N46 B20 CC) – 115 kW / 156 HP
BMW 1 (E87) 2004 – 2011 120 i (N46 B20 B|N46 B20 BD|N46 B20 C|N46 B20 CC) – 110 kW / 150 HP
BMW 1 (E87) 2004 – 2011 130 i (N52 B30 A|N52 B30 AF|N52 B30 BF) – 195 kW / 265 HP
BMW 1 (F20) 2011 – 2019 116 i (N13 B16 A) – 100 kW / 136 HP
BMW 1 (F20) 2011 – 2019 118 i (B38 B15 A) – 100 kW / 136 HP
BMW 1 (F20) 2011 – 2019 118 i (N13 B16 A) – 100 kW / 136 HP
BMW 1 (F20) 2011 – 2019 118 i (N13 B16 A) – 125 kW / 170 HP
BMW 1 (F20) 2011 – 2019 120 d (B47 D20 A) – 140 kW / 190 HP
BMW 1 (F20) 2011 – 2019 120 d (N47 D20 C) – 135 kW / 184 HP
BMW 1 (F20) 2011 – 2019 120 i (B48 B20 A) – 135 kW / 184 HP
BMW 1 (F20) 2011 – 2019 120 i (N13 B16 A) – 130 kW / 177 HP
BMW 1 (F20) 2011 – 2019 125 i (B48 B20 B) – 165 kW / 224 HP
BMW 1 (F20) 2011 – 2019 125 i (N20 B20 A) – 160 kW / 218 HP
BMW 1 (F20) 2011 – 2019 M 135 i (N55 B30 A) – 235 kW / 320 HP
BMW 1 (F20) 2011 – 2019 M 135 i (N55 B30 A) – 240 kW / 326 HP
BMW 1 (F20) 2011 – 2019 M 140 i (B58 B30 A) – 250 kW / 340 HP
BMW 1 (F21) 2011 – 2025 116 i (N13 B16 A) – 100 kW / 136 HP
BMW 1 (F21) 2011 – 2025 118 i (B38 B15 A) – 100 kW / 136 HP
BMW 1 (F21) 2011 – 2025 118 i (N13 B16 A) – 100 kW / 136 HP
BMW 1 (F21) 2011 – 2025 118 i (N13 B16 A) – 125 kW / 170 HP
BMW 1 (F21) 2011 – 2025 120 i (N13 B16 A) – 130 kW / 177 HP
BMW 1 (F21) 2011 – 2025 125 i (N20 B20 A) – 160 kW / 218 HP
BMW 1 (F21) 2011 – 2025 M 135 i (N55 B30 A) – 235 kW / 320 HP
BMW 1 (F21) 2011 – 2025 M 135 i (N55 B30 A) – 240 kW / 326 HP
BMW 1 Convertible (E88) 2007 – 2013 120 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
BMW 1 Convertible (E88) 2007 – 2013 120 i (N46 B20 B|N46 B20 C|N46 B20 E) – 115 kW / 156 HP
BMW 1 Convertible (E88) 2007 – 2013 125 i (N52 B30 A|N52 B30 B|N52 B30 BF) – 160 kW / 218 HP
BMW 1 Convertible (E88) 2007 – 2013 135 i (N54 B30 A|N55 B30 A) – 225 kW / 306 HP
BMW 1 Coupe (E82) 2007 – 2013 120 d (N47 D20 A|N47 D20 C) – 130 kW / 177 HP
BMW 1 Coupe (E82) 2007 – 2013 125 i (N52 B30 A|N52 B30 B|N52 B30 BF) – 160 kW / 218 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 2 Convertible (F23) 2014 – 2025 220 i (B48 B20 A) – 135 kW / 184 HP
BMW 2 Convertible (F23) 2014 – 2025 220 i (N20 B20 A|N20 B20 B) – 135 kW / 184 HP
BMW 2 Convertible (F23) 2014 – 2025 228 i (N20 B20 A) – 180 kW / 245 HP
BMW 2 Convertible (F23) 2014 – 2025 230 i (B46 B20 B|B48 B20 B) – 185 kW / 252 HP
BMW 2 Convertible (F23) 2014 – 2025 M 235 i (N55 B30 A) – 240 kW / 326 HP
BMW 2 Convertible (F23) 2014 – 2025 M 240 i (B58 B30 A) – 250 kW / 340 HP
BMW 2 Coupe (F22, F87) 2012 – 2025 220 d (B47 D20 A) – 140 kW / 190 HP
BMW 2 Coupe (F22, F87) 2012 – 2025 220 d (N47 D20 C) – 135 kW / 184 HP
BMW 2 Coupe (F22, F87) 2012 – 2025 220 i (B48 B20 A) – 135 kW / 184 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.