11538637857 Coolant Line Thermostat Housing Connector for BMW

11538637857 is presented in the source workbook as a thermostat-housing related coolant-line assembly rather than a simple moulded thermostat cover. AutoParts records the part as THH260727-004 for B2B enquiry, sample review and shipment traceability.

The supplied application reference includes BMW 3 Series, 5 Series, X1 and X3 source references. Since the list spans several vehicles or platforms, the Model filter is intentionally blank and final fitment should rely on vehicle-specific evidence.

Product Technical Specifications

Product type: Coolant Line / Thermostat-Housing Connection Assembly

Primary OE reference: 11538637857

Internal item code: THH260727-004

Vehicle brand: BMW

Model filter: Intentionally blank; confirm by VIN and engine data

Cross-reference numbers: 11538637857

Construction: formed metal coolant-line assembly with flexible insulated section, end fittings, mounting features and a service pull ring

Approval method: OE catalogue, VIN, engine information and original-part comparison

A Routed Coolant Connection Instead of a Basic Cover

The photographed assembly uses rigid tube sections and a protected flexible section to carry coolant through a constrained engine-bay route. Correct bends keep the line clear of hot, moving or vibrating components.

End fittings and retention details control how the line locks into adjoining cooling-system components. For this item, matching the complete route is more dependable than relying on a broad vehicle list.

BMW Line Geometry and End-Fitting Approval

Verify 11538637857 through VIN, engine code and a clear image of the removed assembly. Compare every bend, total length, insulation section, bracket and connector orientation.

Because public catalogue matches for this number are limited, technical approval should require dimensioned photographs or a physical sample. Model remains blank to prevent an unsupported single-vehicle claim.

Tube Integrity, Insulation and Retainer Control

Inspect metal tubing for flattening, cracks or transport kinks. The insulated flexible area should be continuous, and end fittings must be clean with intact sealing and locking surfaces.

Route the assembly without twisting and use the original clips or brackets. After refilling, pressure-test the circuit and confirm the line does not contact adjacent engine components.

Procurement, Packing and Sample Confirmation

Reference 11538637857 as the OE identifier and THH260727-004 as the internal item code. Include required volume, destination, carton marking and label format in the quotation request.

Before batch supply, buyers may submit VIN data, engine information, measurements and photographs of the removed component. A physical sample can be used when catalogue evidence is incomplete.

Frequently Asked Questions

Why is 11538637857 described as a connection assembly?

The supplied images show a routed metal and insulated coolant line, so the page uses conservative wording instead of claiming it is a simple thermostat cover.

Why is the BMW Model field empty?

The source names several BMW series and public catalogue confirmation is limited; VIN, engine data and removed-part comparison are required.

Which dimensions should a buyer provide?

Useful checks include end-to-end length, tube bends, fitting diameters, insulation length, bracket positions and connector clocking.

What transport damage should be rejected?

Kinked tubing, crushed insulation, bent brackets, contaminated fittings or damaged retaining features can prevent reliable installation.

How is a technical sample requested?

Quote 11538637857 and THH260727-004, then send quantity, destination and dimensioned images of the original coolant line.

Request a 11538637857 Thermostat Housing Quote

Contact AutoParts with OE 11538637857, item code THH260727-004, quantity and delivery market. Complete fitment confirmation before production ordering or workshop installation.

Application reference: BMW 3 Series, 5 Series, X1 and X3 source references; verify compatibility through VIN, engine data and original-part comparison.

Inspection focus: tube bends, overall route, insulation length, end-fitting geometry, retaining ring, connector clocking and bracket positions

Supply note: Use THH260727-004 for quotations, sample approval, packaging and order traceability.