Coolant Thermostat Housing Assembly for Volvo 30711526

Product Overview

Ordered against OEM 30711526, this Thermostat Housing Assembly replaces the original part in the coolant control circuit on Volvo vehicles. The carries the wax element, housing, seals and — on mapped units — the heater and temperature sensor that govern warm-up, so form and fit are not negotiable. 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 elements that stick part open and seals that take a set after repeated heat cycles 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. It sits inside a cooling-system programme of more than 4000 types, so the same order can carry the neighbouring hoses, flanges and thermostat housings for the platform.

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

Key Benefits

• Tooling route for obsolete references — Where the reference is out of production, we develop the mould from the sample you supply rather than turning the enquiry away.
• 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 — Elements that stick part open and seals that take a set after repeated heat cycles 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.

Application Scenarios

Mixed container for a distributor

A quarterly container is filled across families — intake, charge air, coolant and thermostat lines — to a single packing list. With 30711526 on the list the rest of the coolant control circuit can be priced at the same time.

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. This reference, 30711526, is bought for exactly that situation on Volvo vehicles.

Warranty-expired fleet maintenance

A fleet past dealer coverage moves to independent supply and needs the same reference coverage at a working price. On this reference that means quoting 30711526 with the quantity and letting the packing follow.

Who It Is For

• Online parts sellers — listing by OEM reference, where a mismatched number turns into a return and a negative rating. They order 30711526 by the carton and reorder against the same number.
• Fleet and bus operators — running Volvo vehicles past warranty and buying cooling-system parts by the box to keep downtime short. They judge 30711526 on one thing: whether it matches the part that came off.
• Radiator and cooling specialists — rebuilding cooling systems and sourcing the hoses, flanges and housings for a platform in one go. They judge 30711526 on one thing: whether it matches the part that came off.

Problems It Solves

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. On 30711526 that is settled before the quotation goes out.

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 30711526 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 30711526 the check is the opening temperature, the housing outline and whether the unit is map-controlled, and it happens before despatch.

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 30711526 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 30711526 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.