Coolant Thermostat Housing Assembly for BMW 11518577894

Product Overview

Coolant Thermostat Housing Assembly for BMW 11518577894 covers the coolant control circuit on BMW applications. The reference set on file is OEM 11517572859, 11517506576 and 11518577894, which is the figure to quote when you send an enquiry. Because the part carries the wax element, housing, seals and — on mapped units — the heater and temperature sensor that govern warm-up, a worn one rarely fails cleanly — expect cracked plastic housings and leaking sensor bosses long before it separates, with a gauge that never settles in the normal band, higher fuel consumption and thermostat fault codes as the first complaint over the counter. We hold it as part of a cooling-system range of more than 4000 types built for the independent aftermarket in Europe, the Middle East and South America.

The source photograph for this reference is low resolution. A higher-resolution image can be sent by email on request.

Key Benefits

• Aftermarket buyers, not one-off retail — Pricing and packing are set up for distributors and workshop chains buying by the carton, not for single-piece retail.
• One reference set on every document — OEM 11517572859, 11517506576 and 11518577894 appears on the quotation, the packing list and the carton label, so a warehouse can check a delivery without opening the box.
• Consolidate the platform in one order — Hoses, flanges and thermostat housings for the same platform ship on one pallet, which shortens the paperwork and the freight bill.
• Sample-based production for parts not yet listed — Send the old part or a drawing and we quote from the sample, including mould development where no tool exists.

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 11517572859 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 11517572859 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. For 11517572859 the practical step is confirming the opening temperature, the housing outline and whether the unit is map-controlled before the order is placed.

Who It Is For

• Radiator and cooling specialists — rebuilding cooling systems and sourcing the hoses, flanges and housings for a platform in one go. They order 11517572859 by the carton and reorder against the same number.
• Exporters and consolidators — shipping mixed cooling-system pallets into Europe, the Middle East and South America. They order 11517572859 by the carton and reorder against the same number.
• Aftermarket distributors — stocking cooling-system lines for BMW across a regional network and needing a reference-accurate catalogue behind the shelf. 11517572859 earns its shelf space through repeat demand on BMW platforms.

Problems It Solves

Reference mismatch

Visually identical parts carry different connector geometry between model years. Quoting OEM 11517572859, 11517506576 and 11518577894 fixes the identity before money moves. That is why 11517572859 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. That is why 11517572859 carries its full cross-reference set on this page.

Parts that are no longer produced

When the original reference is dropped, the repair still exists. Sample-based production and mould development keep the line alive. On 11517572859 that is settled before the quotation goes out.

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 95°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 11517572859, 11517506576 and 11518577894 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 11517572859 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.