Coolant Thermostat Housing Assembly for BMW 11517805191

Product Overview

A Thermostat Housing Assembly for BMW vehicles, held against OEM 11517805191. In service the part carries the wax element, housing, seals and — on mapped units — the heater and temperature sensor that govern warm-up. This part carries the wax element, housing, seals and — on mapped units — the heater and temperature sensor that govern warm-up. The failure modes that bring it across a parts counter are leaking sensor bosses and elements that stick part open, reported as a gauge that never settles in the normal band, higher fuel consumption and thermostat fault codes. The part belongs to a cooling-system catalogue of more than 4000 types, which is the practical reason buyers consolidate a mixed pallet with us rather than splitting it across suppliers.

Key Benefits

• 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.
• Inspection before despatch — Parts are inspected before they leave, which for this family means checking the sealing faces and the connector geometry that decide whether it fits.
• Matched to how the part actually fails — Leaking sensor bosses and elements that stick part open are the reasons this reference is bought, so those are the features checked before packing.
• 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.

Application Scenarios

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. This reference, 11517805191, is bought for exactly that situation on BMW vehicles.

Rebuild of an obsolete platform

The original reference is no longer produced, so the part is made from a supplied sample. With 11517805191 on the list the rest of the coolant control circuit can be priced at the same time.

Mixed container for a distributor

A quarterly container is filled across families — intake, charge air, coolant and thermostat lines — to a single packing list. For 11517805191 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

• Workshop and fast-fit chains — replacing thermostat housing assemblys on BMW daily and judging a supplier on whether the part fits first time. 11517805191 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. For them 11517805191 is a line on a shelf, not a project.
• Fleet and bus operators — running BMW vehicles past warranty and buying cooling-system parts by the box to keep downtime short. For them 11517805191 is a line on a shelf, not a project.

Problems It Solves

Long lead times on slow movers

A slow line ordered alone waits for a container. Consolidated with fast movers it travels on the same shipment. That is why 11517805191 carries its full cross-reference set on this page.

Unclear compound

Confirm the compound against the reference before ordering, because visually identical parts are moulded in different materials. With 11517805191 the check is the opening temperature, the housing outline and whether the unit is map-controlled, and it happens before despatch.

Reference mismatch

Visually identical parts carry different connector geometry between model years. Quoting OEM 11517805191 fixes the identity before money moves. On 11517805191 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 87°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 11517805191 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 11517805191 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.