Coolant Thermostat Housing Assembly for BMW 11537550172

Product Overview

A Thermostat Housing Assembly for BMW vehicles, held against OEM 11537550172. In service the part carries the wax element, housing, seals and — on mapped units — the heater and temperature sensor that govern warm-up. The coolant control circuit gives this part a hard life: heat soak, vibration and pressure cycling. Typical end-of-life signs are cracked plastic housings and leaking sensor bosses, which reach the workshop as a gauge that never settles in the normal band, higher fuel consumption and thermostat fault codes. Hunan Woojin Autoparts supplies it from a cooling-system range of more than 4000 types covering German, French, Japanese, American and Korean vehicles.

Key Benefits

• Built for the duty of the coolant control circuit — The part carries the wax element, housing, seals and — on mapped units — the heater and temperature sensor that govern warm-up, so the compound and the wall construction are matched to that circuit rather than to a generic hose spec.
• Export packing as standard — The range ships to Europe, the Middle East and South America, so cartons are packed for long sea legs rather than for a local van run.
• Ordered by reference not by photo — The listing carries OEM 11537550172. You quote the number, we confirm against the same number, and the part that ships is the one on the invoice.
• Mixed pallets instead of single lines — A cooling-system range of more than 4000 types means a slow-moving line can travel with fast movers instead of being ordered on its own.

Application Scenarios

Counter stock for a busy platform

BMW volume in the region justifies holding the line on the shelf instead of ordering it in per job. With 11537550172 on the list the rest of the coolant control circuit can be priced at the same time.

Breakdown repair

The vehicle is off the road and the part has to be right the first time, which makes the reference match the whole decision. Here the thermostat housing assembly is ordered against 11537550172 and travels with the rest of the BMW branch.

Rebuild of an obsolete platform

The original reference is no longer produced, so the part is made from a supplied sample. Here the thermostat housing assembly is ordered against 11537550172 and travels with the rest of the BMW branch.

Who It Is For

• Workshop and fast-fit chains — replacing thermostat housing assemblys on BMW daily and judging a supplier on whether the part fits first time. 11537550172 earns its shelf space through repeat demand on BMW platforms.
• Online parts sellers — listing by OEM reference, where a mismatched number turns into a return and a negative rating. 11537550172 earns its shelf space through repeat demand on BMW platforms.
• Fleet and bus operators — running BMW vehicles past warranty and buying cooling-system parts by the box to keep downtime short. They order 11537550172 by the carton and reorder against the same number.

Problems It Solves

Unclear compound

Confirm the compound against the reference before ordering, because visually identical parts are moulded in different materials. For this thermostat housing assembly the answer is the reference, 11537550172, on every document.

Reference mismatch

Visually identical parts carry different connector geometry between model years. Quoting OEM 11537550172 fixes the identity before money moves. That is why 11537550172 carries its full cross-reference set on this page.

Split ordering

Sourcing one hose from one supplier and the matching flange from another doubles the freight and the paperwork for the same repair. For BMW buyers it is the difference between a stocked line and a credit note on 11537550172.

Technical Features

The part serves the coolant control circuit and carries the wax element, housing, seals and — on mapped units — the heater and temperature sensor that govern warm-up. Material for this reference is confirmed per enquiry. The listed opening temperature is 97°C, which is the figure that has to match the vehicle.

Matched to the circuit the part serves. Confirm the compound against the reference before ordering, because visually identical parts are moulded in different materials.

Specifications

Values marked TBC are not stated on the source catalogue. They are confirmed in writing on the quotation rather than estimated here.

Comparison With the Alternatives

Use Guide

1. Confirm the reference

   Match OEM 11537550172 against the number on the part you removed. Do not match on outline alone.

2. Check the interfaces

   Compare the opening temperature, the housing outline and whether the unit is map-controlled before the vehicle is stripped further.

3. Inspect on arrival

   Look for transit damage on sealing faces and connectors. Confirm the compound against the reference before ordering, because visually identical parts are moulded in different materials.

4. Fit with the original clamp style

   Reuse the clamp type the BMW platform was designed around, and fit any seal or O-ring supplied with 11537550172 rather than carrying the old one over.

5. Pressure check before handover

   Refill, bleed the circuit and check for cracked plastic housings at working temperature before the vehicle leaves.