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Please ensure the part matches the photos and your vehicle before purchasing. OEM numbers are for reference only—this is an aftermarket part, not made or approved by the original vehicle manufacturer.
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Audi A4, A5, Q5, RS5 - Radiator Expansion Bottle

Audi A4, A5, Q5, RS5 - Radiator Expansion Bottle

Regular price R 1,199.99
Regular price Sale price R 1,199.99
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Description

High-performance Radiator Expansion Bottle (OEM 8W0121405L) engineered for durability and precision within the high-pressure cooling systems of modern Audi models.

This coolant reservoir is specifically designed for the B9 platform, managing thermal expansion and maintaining the integrity of the pressurized cooling circuit. Featuring a robust, multi-chambered construction that is highly resistant to extreme temperature fluctuations and high operating pressures, it ensures optimal engine cooling and prevents premature component failure. Its high-grade plastic build makes it an ideal solution for cooling system maintenance under demanding South African operating conditions.

 

Compatible Vehicles

Audi A4 / A4 Quattro (B9 / 2016 – Present)

Audi A5 / A5 Sportback (F5 / 2017 – Present)

Audi Q5 (FY / 2017 – Present)

Audi RS4 / RS5 (B9 Models)

 

Specifications

OEM Reference No.: 8W0121405L / 8W0-121-405-L

Alternative Part Numbers: 8W0121405G / 8W0121405F

Type: Pressurized Coolant Expansion Tank

Material: High-Grade Heat and Pressure Resistant Composite

Fitting: Direct Replacement for B9 Platform

Fast and reliable delivery available across South Africa.

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