30711526 3M5Q8A586AC Volvo C30 S40 V50 S80 V70 1.6D Thermostat Housing 2005-10
30711526 3M5Q8A586AC Volvo C30 S40 V50 S80 V70 1.6D Thermostat Housing 2005-10
Volvo C30 / S40 II / V50 / S80 II / V70 III 1.6D Thermostat Housing
Used factory original Volvo-family coolant thermostat housing assembly for selected 1.6D D4164T diesel models. Ideal replacement for coolant leaks, temperature faults, slow warm-up, overheating issues, or a damaged plastic coolant outlet. Please match your old part shape, hose outlets, sensor plug and reference numbers before ordering.
Actual Part Photos + Vehicle Reference Photos
The photos below help you compare the exact housing, hose outlets, sensor position and vehicle generation before purchase. The vehicle images are reference examples only; the final fitment decision must be made using the compatibility table and your original part number/shape.
Image credits for reference/stock images: Volvo C30 1.6D photos by M 93 / S 400 HYBRID; Volvo V50 photo by Vauxford; stock warehouse image by Visitor7; garage and parcel images via Pixabay. Actual part images are the item photographs.
Buy The Correct Part First Time
This listing has been upgraded with a fitment chart because the original listing data is too broad. Do not rely on registration tools alone. Always compare your existing thermostat housing against the photos, reference numbers, hose layout and electrical plug before purchase.
Confirmed Volvo Compatibility Table
Compatible with selected Volvo 1.6D D4164T diesel vehicles only. Chassis number cut-offs matter, so please check your VIN/chassis number where shown.
| Make | Model | Years | Engine | Fuel | Important Fitment Note |
|---|---|---|---|---|---|
| Volvo | C30 | 2007-2010 | 1.6D D4164T | Diesel | Up to chassis number 196730. 3-door hatchback. Compare housing and sensor plug. |
| Volvo | S40 II | 2005-2010 | 1.6D D4164T | Diesel | Up to chassis number 503868. Saloon. Compare old part before ordering. |
| Volvo | V50 | 2005-2010 | 1.6D D4164T | Diesel | Up to chassis number 555028. 5-door estate. Must match the pictured housing. |
| Volvo | S80 II | 2010 only | 1.6D D4164T | Diesel | Up to chassis number 125483. Later/other diesel engines may use a different part. |
| Volvo | V70 III | 2010 only | 1.6D D4164T | Diesel | Up to chassis number 147629. Estate model. Verify old part number and housing shape. |
Will Not Fit / Check Before Ordering
To reduce wrong orders and returns, please read this section carefully. If your vehicle is not listed in the confirmed fitment table, this listing should not be treated as confirmed fit.
| Vehicle / Engine Type | Fitment Status | Reason |
|---|---|---|
| Petrol Volvo engines: 1.6, 1.8, 2.0, 2.4, T5 | Will not fit | This housing is for selected 1.6D diesel cooling systems only. |
| Volvo 2.0D, 2.4D, D3, D4, D5 diesel engines | Will not fit unless identical part number/shape | Different engines commonly use different thermostat housings and hose layouts. |
| C30 / S40 / V50 / S80 / V70 outside the listed years or after chassis cut-off | Not confirmed | Later vehicles may use an updated or different cooling housing. |
| Any vehicle with a different electrical connector | Will not fit | The sensor plug must match your wiring connector. |
| Any vehicle with different hose outlet angle, pipe size or bolt pattern | Will not fit | The housing must physically match the old unit to seal correctly. |
| Ford / Peugeot / Citroen / Mini / Mazda / Fiat / Suzuki applications | Reference only, not sold as confirmed here | The part-number family appears across other marques, but this listing is verified for the Volvo models in the table only unless you match your old part exactly. |
Reference Numbers To Compare
Your old part does not need every number below, but at least one matching reference plus matching shape/plug/hose layout gives the strongest fitment confidence.
| Reference Type | Numbers / Markings | Buyer Check |
|---|---|---|
| Volvo reference | 30711526 | Compare with your existing housing or dealer parts data. |
| Ford / shared platform reference family | 3M5Q8A586AC, 3M5Q-8A586-AC, 3M5Q8-A586-AC | Check the printed/moulded number on the old housing where visible. |
| Other cross-reference numbers seen for this thermostat family | 11517805998, 1336X2, 9647767180, 1230673, 1254379, 1313841, Y401-151H0-A, Y602-1517X, 7805998, 17690-69K00 | Use as search/confirmation references only. Physical comparison is essential. |
| Part construction | Black synthetic/plastic thermostat housing, coolant outlet, temperature sensor area, approx. 83°C thermostat family | Seals/gaskets are only included where clearly shown in the actual photos. |
Where This Part Is Fitted & What It Controls
This thermostat housing is fitted in the engine bay as part of the cooling system, around the engine block/coolant outlet area and near coolant hoses. It houses the thermostat, manages coolant flow between the engine and radiator circuit, and carries temperature information through the sensor area where applicable.
What it controls
- Coolant warm-up and flow through the engine.
- Engine operating temperature stability.
- Temperature signal for engine management / gauge / fan strategy where fitted.
- Coolant outlet sealing at the housing and hoses.
Why replacement matters
- A cracked housing can leak coolant and cause overheating.
- A stuck thermostat can cause poor heater performance or slow warm-up.
- A faulty sensor area can trigger temperature-related warnings.
- Running with low coolant can damage the engine, turbo and head gasket.
Common Fault Symptoms
A faulty thermostat housing or thermostat assembly can cause several issues. Match the symptom with a proper diagnosis before fitting parts.
Cooling symptoms
- Coolant leak around the housing, hose neck or sensor area.
- Low coolant warning or repeated coolant top-ups.
- Coolant smell after driving.
- Engine overheating in traffic or under load.
- Radiator fan running more often than normal.
Temperature symptoms
- Temperature gauge dropping or fluctuating.
- Engine taking too long to warm up.
- Poor cabin heater performance in cold weather.
- Temperature warning light or coolant temperature fault code.
- Fuel economy drop caused by incorrect warm-up behaviour.
Why Buy A Factory Original Used Part?
Used manufacturer-supplied parts are often a better match than cheap copy parts because the hose outlets, sensor location, bolt holes, seal face and plastic moulding were designed for the vehicle platform. On cooling-system parts, small differences in pipe angle or sensor position can cause leaks, poor fitment or wasted labour.
- Better fit confidence: built to match the original vehicle layout.
- Better value: save money compared with many new dealer-supply options.
- Lower waste: reusing working car parts reduces unnecessary manufacturing and landfill.
- Fast availability: ThePartPilot keeps more than 25,000 parts in stock and on the shelf at any one time.
Fitting Instructions, Tools & Estimated Repair Time
Estimated repair time
Typical fitting time: 1.0 to 2.0 hours, depending on access, corrosion, hose condition and coolant bleeding. Allow extra time if bolts are seized, hoses are brittle, or the system needs repeated bleeding.
Common tools required
- Socket set and ratchet.
- Torx/hex bit set where required.
- Hose clamp pliers.
- Flat screwdriver or trim/pick tool.
- Drain tray for coolant.
- Coolant funnel / bleed funnel.
- Torque wrench where specification is available.
- Gloves, rags and suitable coolant/antifreeze.
Basic fitting guide
- Park safely, allow the engine to cool fully, and release coolant pressure slowly at the expansion tank.
- Disconnect the battery if working close to wiring or the starter area.
- Drain coolant to below thermostat housing level using a clean drain tray.
- Remove intake ducting, engine cover or air box parts needed for access.
- Unplug the temperature sensor connector and move wiring safely aside.
- Clamp or remove coolant hoses from the housing, noting their original positions.
- Unbolt the thermostat housing and remove it carefully from the engine.
- Clean the sealing face. Do not gouge the aluminium mating surface.
- Fit the replacement housing with the correct seal/gasket arrangement.
- Reconnect hoses, clips, wiring and any removed intake parts.
- Refill with the correct coolant mixture and bleed the cooling system properly.
- Run to operating temperature, check heater output, check fan operation, inspect for leaks and recheck coolant level after the road test.
No-JavaScript Garage Labour Cost Estimator
eBay does not allow script-based calculators in descriptions, so use this static guide: estimated labour cost = garage hourly rate x time required.
| Garage Rate | 1.0 Hour | 1.5 Hours | 2.0 Hours |
|---|---|---|---|
| £50 per hour | £50 | £75 | £100 |
| £70 per hour | £70 | £105 | £140 |
| £90 per hour | £90 | £135 | £180 |
| £120 per hour | £120 | £180 | £240 |
Fitting Service, Collections & Workshop Support
We may be able to offer fitting subject to availability, vehicle access, workshop diary space and prior appointment. Please arrange collections and fitting enquiries through eBay Messages in line with eBay communication rules.
Collection availability
- Collections available 7 days a week until 8pm by appointment.
- Bank holiday collections may be possible by prior appointment.
- Please do not travel without confirmed collection arrangements.
- Bring your eBay order details when collecting.
Address warning
Please make sure your checkout delivery address is correct before payment. Sellers cannot safely change the delivery address after checkout, and the order must be sent to the address supplied through eBay.
Postage, VAT & International Buyers
UK delivery
We pack carefully to protect pipe outlets, sensor areas and mounting points. Please check the parcel on arrival and compare the part before fitting.
Worldwide postage
Worldwide postage is available through the eBay Global Shipping Programme where eBay makes this item eligible. The exact eligible country/market list, customs charges, taxes and postage cost are controlled by eBay and shown at checkout.
VAT
We operate under the Global VAT / margin scheme for used parts. No VAT is charged separately and no separate VAT amount is available to reclaim.
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Returns, Fitment Protection & Security Marks
We provide detailed photos, reference numbers and compatibility data so customers can order the correct part first time. Please check your original part carefully before buying and before fitting.
- All parts are photographed and may be security marked for fraud prevention.
- Incorrectly ordered parts must be returned in the same condition received, unused and with all markings intact.
- Parts that have been fitted, damaged, altered, stripped, overheated or returned missing components may be subject to a refund deduction in line with eBay rules and UK consumer rules.
- If the item is faulty or does not match the listing, please use the eBay return process so the issue can be resolved properly.
- Fitment queries should be sent before purchase with your vehicle model, year, engine, chassis/VIN information and clear photos of your old part.
Vehicle Recycling & Small Business Support
Buying used parts from ThePartPilot supports a local small business, keeps useful vehicle components in circulation, and reduces unnecessary manufacturing, packaging and waste. Every reused part helps extend the life of another vehicle and keeps more material out of landfill.
Thank you for supporting responsible vehicle recycling, local jobs and a more sustainable way to repair cars. We also support vehicle recycling and parts salvage enquiries through permitted eBay communication channels.