25631-2E500 Coolant Inlet Thermostat Housing for Hyundai

25631-2E500 defines a long-neck coolant inlet fitting used to guide hose flow into the thermostat-side passage on selected Hyundai platforms. AutoParts records the part as THH260727-002 for B2B enquiry, sample review and shipment traceability.

The supplied application reference includes Hyundai Elantra, ix35 and Tucson source references, with a related Kia Sportage reference. 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 Inlet Fitting / Thermostat Housing

Primary OE reference: 25631-2E500

Internal item code: THH260727-002

Vehicle brand: HYUNDAI

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

Cross-reference numbers: 25631-2E500

Construction: moulded composite coolant inlet with an elongated angled neck, reinforced mounting flange and sealing seat

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

Directed Coolant Entry Through a Long-Neck Fitting

The extended neck positions the hose connection away from the cylinder-head interface while retaining the correct flow direction. Its moulded curve and insertion depth are part of the fit, not cosmetic details.

Reinforcement ribs around the flange help the component withstand clamp load and temperature cycling. A mismatched neck angle can place stress on the hose or prevent the flange from seating fully.

Hyundai Neck Angle, Seal and Reach Comparison

Use OE 25631-2E500 together with VIN, engine code and build date. Compare the original part’s mounting holes, neck length, bend angle and hose-retaining bead.

Inspect the sealing method and any locator feature on the mating face. Related Hyundai and Kia vehicles can share engine families while using different coolant fittings.

Composite Moulding and Hose-Retention Checks

Reject housings with split seams, distorted flanges, incomplete ribs or damaged hose beads. The coolant bore should be smooth and free of moulding flash.

Fit the seal without twisting, align the hose naturally and position the clamp behind the retaining bead. Bleed the cooling system and inspect the long neck for movement or seepage.

Procurement, Packing and Sample Confirmation

Reference 25631-2E500 as the OE identifier and THH260727-002 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

Is 25631-2E500 a thermostat or a housing?

The reference is commonly described as a coolant inlet fitting, thermostat outlet or water inlet associated with the thermostat-side cooling passage.

Why is a single Hyundai model not selected?

The supplied application list spans several Hyundai and related Kia references, so Model is intentionally blank pending VIN and engine verification.

What should be compared on the long inlet neck?

Check overall reach, bend angle, outside diameter, hose bead position, flange pattern and seal arrangement.

What can damage a composite coolant fitting?

Over-tightened fasteners, side-loaded hoses, incorrect clamps, heat ageing and impact during transport can crack or distort the part.

What information supports a distributor quotation?

Provide 25631-2E500, THH260727-002, order volume, market, labelling format and original-part evidence for approval.

Request a 25631-2E500 Thermostat Housing Quote

Contact AutoParts with OE 25631-2E500, item code THH260727-002, quantity and delivery market. Complete fitment confirmation before production ordering or workshop installation.

Application reference: Hyundai Elantra, ix35 and Tucson source references, with a related Kia Sportage reference; verify compatibility through VIN, engine data and original-part comparison.

Inspection focus: flange bolt pattern, neck angle, hose bead, internal seal land, moulded ribs and installed reach

Supply note: Use THH260727-002 for quotations, sample approval, packaging and order traceability.