Used Genuine BMW E28 Coolant Expansion Tank – 524td / M5 – 17112225352

Used original BMW coolant expansion tank for selected BMW E28 cooling systems.

This reservoir is fitted in the engine bay and accommodates coolant expansion as the engine reaches operating temperature. It includes the original pressure cap, coolant-level sensor and the attached coolant hoses shown in the photographs.

The tank has an aged translucent plastic appearance and visible moulding/casting markings. The exact BMW number is not printed as a full catalogue number on the tank, but the design corresponds to the E28 524td/M5 expansion tank reference 17112225352.

Product details

• Product: Coolant expansion tank
• Alternative description: Coolant reservoir
• German description: Ausgleichsbehälter
• Manufacturer: Genuine BMW
• Possible BMW part number: 17112225352
• Formatted BMW number: 17 11 2 225 352
• Casting/reference marking: 1223532 as visible on the tank
• Installation position: Engine bay
• System: Engine cooling system
• Integrated component: Coolant-level sensor
• Pressure cap: Included
• Hoses: Included as shown
• Material: Moulded translucent plastic
• Condition: Used
• Quantity supplied: One complete used tank assembly

Possible vehicle compatibility

Suitable for selected BMW E28 models using this specific expansion-tank design, including:

• BMW E28 524td
• BMW E28 M5
• Selected E28 diesel and high-performance cooling-system configurations

Fitment depends on the vehicle model, production date, engine, radiator layout, hose connections and electrical level-sensor arrangement.

This tank is not guaranteed to fit every E28 model. It should not be assumed suitable for E28 518, 520i, 525e, 528i or other models that use a different reservoir design.

Always compare:

• Tank shape
• Mounting points
• Hose connections
• Pressure-cap design
• Level-sensor connection
• Radiator and cooling-system layout

BMW and reference numbers

• 17112225352 – Possible BMW coolant expansion tank reference
• 17 11 2 225 352 – Formatted BMW number
• 1223532 – Casting/reference marking visible on the tank

The full BMW catalogue number is not clearly printed on the photographed part. Please verify the number and dimensions against the original tank before ordering.

Condition

Used original BMW component with visible age- and use-related wear, including:

• Strong yellowing and discolouration of the plastic
• Surface dirt and coolant residue
• Scratches and storage marks
• Age-related plastic deterioration
• Wear around the hose connections
• Ageing of the attached rubber hoses
• Possible brittleness around the mounting points and seams

The tank, pressure cap, level sensor and hoses have not been pressure-tested or function-tested.

The plastic may become brittle with age even when no obvious crack is visible. The sensor, cap and hoses should be inspected or replaced before installation if necessary.

Supplied exactly as shown in the photographs.

Included

• One used genuine BMW expansion tank
• Original pressure cap
• Coolant-level sensor fitted to the tank
• Attached hoses and clamps shown in the photographs

The following are not included:

• Additional coolant hoses
• Radiator
• Thermostat housing
• Wiring harness
• Coolant
• Additional mounting hardware not visible in the photographs

Installation recommendation

Before installation:

• Compare the tank with the original vehicle component
• Inspect the tank seams and mounting points for cracks
• Check all hose connections carefully
• Inspect the pressure cap and sealing surface
• Check the coolant-level sensor and electrical connector
• Replace aged hoses and clamps where required
• Pressure-test the cooling system after installation
• Fill the system with the correct coolant mixture
• Bleed the cooling system correctly
• Check for leaks after the engine reaches operating temperature

Because a damaged expansion tank can cause sudden coolant loss and engine overheating, professional inspection is recommended.

Storage location: 204