Coolant Thermostat Housing Assembly for Volvo 31422105

Product Overview

This Thermostat Housing Assembly is supplied for Volvo applications and is catalogued against OEM 31422105. Matching starts from the reference rather than from a picture, which is what keeps a container of parts out of the returns pile. 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

• Checked on the features that matter — Inspection concentrates on the opening temperature, the housing outline and whether the unit is map-controlled — the dimensions that put a part back in the box if they are wrong.
• 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.
• 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.
• Ordered by reference not by photo — The listing carries OEM 31422105. You quote the number, we confirm against the same number, and the part that ships is the one on the invoice.

Application Scenarios

Rebuild of an obsolete platform

The original reference is no longer produced, so the part is made from a supplied sample. For 31422105 the practical step is confirming the opening temperature, the housing outline and whether the unit is map-controlled before the order is placed.

Mixed container for a distributor

A quarterly container is filled across families — intake, charge air, coolant and thermostat lines — to a single packing list. Here the thermostat housing assembly is ordered against 31422105 and travels with the rest of the Volvo branch.

Scheduled cooling-system overhaul

The vehicle is in for a coolant leak and the workshop replaces the whole branch at once rather than chasing the next failure in a month. For 31422105 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

• Exporters and consolidators — shipping mixed cooling-system pallets into Europe, the Middle East and South America. What they need from 31422105 is that it fits the Volvo on the ramp today.
• Aftermarket distributors — stocking cooling-system lines for Volvo across a regional network and needing a reference-accurate catalogue behind the shelf. They judge 31422105 on one thing: whether it matches the part that came off.
• Workshop and fast-fit chains — replacing thermostat housing assemblys on Volvo daily and judging a supplier on whether the part fits first time. What they need from 31422105 is that it fits the Volvo on the ramp today.

Problems It Solves

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. With 31422105 the check is the opening temperature, the housing outline and whether the unit is map-controlled, and it happens before despatch.

Returns from wrong fitment

Every returned part costs the freight twice. Checking the opening temperature, the housing outline and whether the unit is map-controlled before despatch is cheaper than a credit note. That is why 31422105 carries its full cross-reference set on this page.

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. For this thermostat housing assembly the answer is the reference, 31422105, on every document.

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 83°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 31422105 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 Volvo platform was designed around, and fit any seal or O-ring supplied with 31422105 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.