BMW 3 Series (E46), 5 Series (E39) - Radiator Expansion Bottle

High-performance Radiator Expansion Bottle (OEM 17132247553) engineered specifically for the cooling requirements of BMW 4-cylinder engine configurations.

This coolant reservoir is a critical pressure-vessel component that manages thermal expansion within the cooling system. Unlike the 6-cylinder variants, this model is designed without the auxiliary side pipe connection, ensuring a precise fit for the simplified cooling loops of the M43 and N42/N46 engine series. Constructed from reinforced, heat-stabilized polymer, it is built to withstand the high operating pressures of BMW systems, preventing common failure points such as hairline cracks and seam leaks. It is an ideal replacement for maintaining cooling efficiency and preventing engine overheating under South African operating conditions.

Compatible Vehicles

BMW 3 Series (E46 / 316i / 318i / 1998 – 2005)

BMW 5 Series (E39 / 520i 4-Cylinder / 1996 – 2003)

BMW Z3 (E36/7 / 1.8 / 1.9 / 1995 – 2002)

Specifications

OEM Reference No.: 17132247553 / 17 13 2 247 553

Alternative Part Numbers: 17137523290

Configuration: No Side Pipe Connection

Engine Compatibility: M43 / N42 / N46 / M44 Engine Series

Type: Pressurized Expansion Tank

Material: High-Grade Heat-Stabilized Reinforced Polymer

Fast and reliable delivery available across South Africa.