BMW 5 Series (E39) - Radiator Expansion Bottle

Description

High-performance Radiator Expansion Bottle (Ref: BM135) engineered for the specific cooling requirements of the BMW 5 Series (E39) platform.

This pressurized coolant reservoir is a critical component for maintaining engine temperature and managing the thermal expansion of coolant during operation. Constructed from high-grade, heat-stabilized polymer, it is designed to endure the high-pressure environment of the BMW cooling system, significantly reducing the risk of splits or leaks common in aged factory units. Its robust design ensures optimal cooling efficiency and long-term reliability for both petrol and diesel variants under South African operating conditions.

Compatible Vehicles

BMW 5 Series (E39 / 520i / 523i / 525i / 528i / 530i / 1995 – 2003)

BMW 5 Series (E39 / 535i / 540i / 1996 – 2003)

BMW 5 Series (E39 / 520d / 525d / 530d / 1997 – 2003)

BMW 7 Series (E38 / 728i / 728iL / 1995 – 2001)

Specifications

Reference No.: BM135

Type: Pressurized Expansion Tank

Inclusions: Bottle only (Level sensor and cap sold separately)

Material: High-Grade Heat-Stabilized Reinforced Polymer

Fast and reliable delivery available across South Africa.