Shop Radiator Overflow Tanks Online at My Auto Parts!

My Auto Parts is your one-stop shop for getting your car back on the road. We have a collection of high-quality OEM and aftermarket Radiator Overflow Tank to fit any make, model, and year—30-day fitment guarantee on all parts. Browse our Radiator Overflow Tank catalogue and get the parts you need to get back behind the wheel – fast!

Why is a Radiator Overflow Tank an essential part of your car?

Maintains Coolant Level: The radiator overflow tank, also called a coolant reservoir, stores excess coolant when the engine heats up. As the engine cools, the coolant contracts, and the reservoir supplies the radiator with the coolant it needs. This prevents the radiator from being overfilled when cold, which could lead to coolant spewing out when it expands.

Maintains Coolant Level: The overflow tank, also called a coolant reservoir, stores excess coolant when the engine heats up. As the engine cools, the coolant contracts, and the reservoir supplies the radiator with the coolant it needs. This prevents the radiator from being overfilled when cold, which could lead to coolant spewing out as it expands.


For further information about the aftermarket and OEM parts available across My Auto Parts, please refer to our guide.

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  • 30-day no fault return policy: Changed your mind? Not a problem; after purchase, you have 30 days to return the part and get a refund.   

  • Get your questions answered: The My Auto Parts team is ready to answer your questions via online chat and guide you towards the perfect Radiator Overflow Tank. (click the Chat button on the bottom right corner)

  • Secure checkout: Shop with peace of mind, knowing your information is protected by our secure payment systems.   

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  • Full fitment information for all parts: Be sure to check the compatible vehicles section on each product page to make sure you have the right part for your vehicle. Search the website using part numbers for VINs

Customer Support and Information 

My Auto parts has been delivering car parts for 4 years now, with an inventory built off 30 years of experience in the auto parts industry. Our team is ready to help you with any questions you may have. We are on standby to ensure you receive the right advice and support when choosing from our Radiator Overflow Tank catalogue for your car. Start a chat by clicking the chat button at the bottom right. You can also email us at info@myautoparts.com.au or leave us a message here.

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A/C Condenser Fan Assembly Aftermarket suits Mitsubishi Mirage/Lancer CE 1.5L 4G15 & 1.8L 4G93 4CYL Petrol A/C Condenser Fan Assembly Aftermarket suits Mitsubishi Mirage/Lancer CE 1.5L 4G15 & 1.8L 4G93 4CYL Petrol
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A/C Condenser Fan Assembly Aftermarket suits Mitsubishi Mirage/Lancer CE 1.5L 4G15 & 1.8L 4G93 4CYL Petrol

[compatible-vehicles]Mitsubishi Lancer CE 2Dr Coupe 6/1996-7/2003 CE 4Dr/WGN 6/1996-6/2002 Mitsubishi Mirage CE3Dr 5/1996-9/2004 [/compatible-vehicles]
$137.34
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Kia Picanto OEM Radiator Overflow Bottle 12/2023 to 11/2024 - 25430G6000

Radiator Overflow Bottle suits Kia Picanto. Fits on Kia Picanto JA built from 12/2023 to 11/2024. This Radiator Overflow Bottle is a quality OEM product. Check compatible vehicle destails to...
$103.54
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Without Cap Without Sensor Radiator Overflow Bottle OEM Suits Kia Carnival VQ 2006 to 2015
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Without Cap Without Sensor Radiator Overflow Bottle OEM Suits Kia Carnival VQ 2006 to 2015

[compatible-vehicles]Kia Carnival VQ& Grand Carnival Wagon 1/2006-1/2015 [/compatible-vehicles]
$132.48
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Radiator Overflow Bottle,With Cap but without Sensor, Aftermarket Suits Kia Carnival VQ 2006 to 2015 Radiator Overflow Bottle,With Cap but without Sensor, Aftermarket Suits Kia Carnival VQ 2006 to 2015
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Radiator Overflow Bottle,With Cap but without Sensor, Aftermarket Suits Kia Carnival VQ 2006 to 2015

[compatible-vehicles]Kia Carnival VQ& Grand Carnival Wagon 1/2006-1/2015 [/compatible-vehicles]
$128.15
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Hyundai Kona OEM Radiator Overflow Bottle 04/2023 to 08/2024 - 25430DF000

Radiator Overflow Bottle suits Hyundai Kona. Fits on Hyundai Kona SX2 built from 04/2023 to 08/2024. This Radiator Overflow Bottle is a quality OEM product. Check compatible vehicle destails to...
$115.31
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Radiator Overflow Bottle OEM suits Radiator Overflow Bottle OEM suits
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Radiator Overflow Bottle OEM suits

[compatible-vehicles]Hyundai Tucson TL Wagon 30 Special Edition DCT 1.6L 4Cyl Turbo Petrol 4Dr AWD 5/2016-6/2018 Wagon Active Automatic 2.0L 4Cyl Petrol 4Dr FWD 3/2017-6/2018 Wagon Active Automatic 2.0L 4Cyl Petrol...
$90.45
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With Cap Without Sensor Radiator Overflow Bottle OEM Suits Hyundai Trajet FO 2000 to 2007 With Cap Without Sensor Radiator Overflow Bottle OEM Suits Hyundai Trajet FO 2000 to 2007
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With Cap Without Sensor Radiator Overflow Bottle OEM Suits Hyundai Trajet FO 2000 to 2007

[compatible-vehicles]Hyundai Trajet FOWagon 3/2000-12/2007 [/compatible-vehicles]
$190.48
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With Cap Without Sensor Radiator Overflow Bottle OEM Suits Hyundai i20 PB 2010 to 2012 With Cap Without Sensor Radiator Overflow Bottle OEM Suits Hyundai i20 PB 2010 to 2012
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With Cap Without Sensor Radiator Overflow Bottle OEM Suits Hyundai i20 PB 2010 to 2012

[compatible-vehicles]Hyundai i20 PB 3Dr/ 5Dr Hatch Active 7/2010-6/2012 5Dr Hatch Elite 7/2010-6/2012 5Dr Hatch Premium 7/2010-6/2012 [/compatible-vehicles]
$71.21
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With Cap Without Sensor Radiator Overflow Bottle Aftermarket suits Subaru With Cap Without Sensor Radiator Overflow Bottle Aftermarket suits Subaru
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With Cap Without Sensor Radiator Overflow Bottle Aftermarket suits Subaru

[compatible-vehicles]Subaru Forester S3 Wagon X Automatic 2.5L 4Cyl Petrol 4Dr AWD 12/2011-1/2013 Wagon X Automatic 2.5L 4Cyl Petrol 4Dr AWD 2/2011-11/2011 Wagon X Automatic 2.5L 4Cyl Petrol 4Dr AWD 3/2008-12/2009...
$58.34
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OEM Radiator Overflow Bottle suits Subaru WRX V1 2017 to 2021 OEM Radiator Overflow Bottle suits Subaru WRX V1 2017 to 2021
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OEM Radiator Overflow Bottle suits Subaru WRX V1 2017 to 2021

[compatible-vehicles]Subaru WRX V1 Sedan WRX STI Manual 2.5L 4Cyl Turbo Petrol 4Dr 4X4 7/2017-6/2018 Sedan WRX STI Manual 2.5L 4Cyl Turbo Petrol 4Dr 4X4 8/2020-2/2022 Sedan WRX STI Manual 2.5L...
$142.46
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OEM Radiator Overflow Bottle suits Subaru WRX V1 2017 to 2021 OEM Radiator Overflow Bottle suits Subaru WRX V1 2017 to 2021
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OEM Radiator Overflow Bottle suits Subaru WRX V1 2017 to 2021

[compatible-vehicles]Subaru Levorg V1 Wagon 1.6 GT CVT 1.6L 4Cyl Turbo Petrol 4Dr 4X4 8/2017-9/2018 Wagon 1.6 GT Premium CVT 1.6L 4Cyl Turbo Petrol 4Dr 4X4 8/2017-9/2018 Wagon 2.0 GT-S CVT...
$142.46
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Expansion Bottle suits Hyundai i30 Expansion Bottle suits Hyundai i30
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Expansion Bottle suits Hyundai i30

[compatible-vehicles]Hyundai i30 GD Hatch 1.6 CRDi Active Auto 1.6L 4Cyl Turbo Diesel 4Dr FWD 5/2012-12/2014 Hatch 1.6 CRDi Active Manual 1.6L 4Cyl Turbo Diesel 4Dr FWD 5/2012-12/2014 Hatch 1.6 CRDi...
$54.40
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Without Cap Without Sensor Radiator Overflow Bottle OEM Suits Holden Barina TK 2005 to 2012 Without Cap Without Sensor Radiator Overflow Bottle OEM Suits Holden Barina TK 2005 to 2012
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Without Cap Without Sensor Radiator Overflow Bottle OEM Suits Holden Barina TK 2005 to 2012

[compatible-vehicles]Holden Barina TK3/5Dr Hatch 12/2005-12/2012 [/compatible-vehicles]
$27.64
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With Cap Without Sensor Radiator Overflow Bottle Aftermarket Suits Holden Barina XC 2001 to 2011 With Cap Without Sensor Radiator Overflow Bottle Aftermarket Suits Holden Barina XC 2001 to 2011
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With Cap Without Sensor Radiator Overflow Bottle Aftermarket Suits Holden Barina XC 2001 to 2011

[compatible-vehicles]Holden Barina XC3/5Dr 3/01-11/05 & Combo Van 9/02-9/11 3/2001-9/2011 [/compatible-vehicles]
$31.56
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With Cap Without Sensor Radiator Overflow Bottle Aftermarket Suits Holden Barina SB 1994 to 2001
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With Cap Without Sensor Radiator Overflow Bottle Aftermarket Suits Holden Barina SB 1994 to 2001

[compatible-vehicles]Holden Barina SB3/5Dr & Combo Van 4/1994-2/2001 [/compatible-vehicles]
$8.36
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Radiator Overflow Bottle OEM suits Holden
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Radiator Overflow Bottle OEM suits Holden

[compatible-vehicles]Holden Colorado RG Cab Chassis 4x2 LS Automatic 2.8L 4Cyl Turbo Diesel 4Dr RWD 6/2012-9/2016 Cab Chassis 4x2 LS Automatic 2.8L 4Cyl Turbo Diesel 4Dr RWD 7/2017-7/2018 Cab Chassis 4x2...
$57.82
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Without Cap Without Sensor Radiator Overflow Bottle OEM suits Holden Barina Spark MJ Without Cap Without Sensor Radiator Overflow Bottle OEM suits Holden Barina Spark MJ
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Without Cap Without Sensor Radiator Overflow Bottle OEM suits Holden Barina Spark MJ

[compatible-vehicles]Holden Barina Spark MJ Hatch CD CD Automatic 1.2L 4Cyl Petrol 4Dr FWD 1/2013-4/2016 Hatch CD CD Manual 1.2L 4Cyl Petrol 4Dr FWD 1/2013-4/2016 Hatch CD CD Manual 1.2L 4Cyl...
$27.35
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With Cap With Sensor Radiator Overflow Bottle Aftermarket Suits Holden Astra TS 1998 to 2006 With Cap With Sensor Radiator Overflow Bottle Aftermarket Suits Holden Astra TS 1998 to 2006
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With Cap With Sensor Radiator Overflow Bottle Aftermarket Suits Holden Astra TS 1998 to 2006

[compatible-vehicles]Holden Astra TS3/4/5Dr 8/1998-10/2006 [/compatible-vehicles]
$41.34
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Without Cap Without Sensor Radiator Overflow Bottle OEM Suits Holden Viva JF 2005 to 2009 Without Cap Without Sensor Radiator Overflow Bottle OEM Suits Holden Viva JF 2005 to 2009
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Without Cap Without Sensor Radiator Overflow Bottle OEM Suits Holden Viva JF 2005 to 2009

[compatible-vehicles]Holden Viva JF4/5Dr & Wagon 10/2005-4/2009 [/compatible-vehicles]
$66.94
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Radiator Overflow Bottle OEM suits Isuzu Radiator Overflow Bottle OEM suits Isuzu
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Radiator Overflow Bottle OEM suits Isuzu

[compatible-vehicles]Isuzu Ute D-Max TFR Cab Chassis 4x2 SX Hi-Ride Automatic 3.0L 4Cyl Turbo Diesel 2Dr RWD 2/2017-4/2018 Cab Chassis 4x2 SX Hi-Ride Automatic 3.0L 4Cyl Turbo Diesel 2Dr RWD 4/2018-5/2019...
$82.74
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