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Thermostat Coolant VALEO 819727 — no image available

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Specs, fitment data and pricing remain accurate.
BrandVALEO
MPN819727
OE refs3
SKU0021-819727
GTIN / EAN3276428197272

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Details

SpecificationValue
BrandVALEO
Opening Temperature [°C]87 °C
Weight [kg]0.41 kg

OE numbers (3)

Search by this OE number to find compatible parts

Where this part fits

Original-fit position for OE 03L121111N. The red ring marks where this part installs on the vehicle.

Coolant regulator housing with thermostat D - 17.08.2009>> - 07.09.2009* — A6 A6/Avant C6 (Typ 4F) (2005–2011) — Coolant regulator
A6 A6/Avant C6 (Typ 4F) (2005–2011) · Coolant regulatorPosition 1

About this product

Sourced from VALEO, this thermostat coolant (819727) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Opening Temperature [°C]: 87 °C, Weight [kg]: 0, 41 kg, Housing Type: 0, Supplementary Article/Supplementary Info: 98 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit AUDI, SEAT models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 03L121111AD, 03L121111N, 104761, 114 853 and 41 more. Matching these numbers confirms a like-for-like replacement with no loss of function. VALEO is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.

About VALEO

Valeo, founded in 1923 in Saint-Ouen, France, is a major global automotive supplier with expertise spanning multiple vehicle systems. Valeo specialises in clutch kits, alternators, starters, wiper systems, lighting, and thermal management components. As an OE supplier to Peugeot, Renault, Citroën, Volkswagen, and many others, Valeo products maintain factory-quality standards. With 19 research centres worldwide and a strong focus on innovation, Valeo combines French engineering heritage with cutting-edge automotive technology for dependable replacement parts.

Suitable cars

Equivalent products (42)

Show all 42 OE numbers
BORG & BECKBBT106
BORG & BECKFTK106
BorgWarner (Wahler)41193287D
BSGBSG 90-126-053
BSGBSG90126053
CALORSTAT by VernetTH722987J
CAUTEX756847
EPS1880781
ERA350529
FACET78781
HELLA8MT 354 777-381
HELLA8MT354777381
MAGNETI MARELLI352080787000
MAGNETI MARELLI352080787100
MAGNETI MARELLI359001202780
MAHLETI3487
MAXGEAR67-0111
MAXGEAR670111
MEAT & DORIA92746
OPEN PARTSTRM1089.00
OPEN PARTSTRM108900
QUINTON HAZELLQTH709K
SIDAT94.746
SIDAT94746
SWAG30 10 4761
SWAG30104761
TOPRAN114853
TRICLO463540
TRISCAN8620 33182
TRISCAN862033182

Thermostat Coolant VALEO 819727compatible car models

Car modelsAUDI: A4 Allroad B8 (8KH), A4 B8 (8K2), A4 B8 Avant (8K5), A4 B9 (8W2, 8WC), A4 B9 Avant (8W5, 8WD), A5 (8T3), A5 Convertible (8F7), A5 Sportback (8TA), A6 C6 (4F2), A6 C6 Avant (4F5) (+4 more); SEAT: EXEO (3R2), EXEO ST (3R5)
Engines2.0 TDI quattro; 2.0 TDI; 1.8 TFSI
Year of manufacture2004-2019
Manufacturer article number (MPN)819727
OE part numbers03L121111AD, 03L121111N, 3L121111AD
Compatibility check

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Description and what's included

VALEO 819727 . Housing Type: 0. Opening Temperature [°C]: 87 °C. Supplementary Article/Supplementary Info: 98. Weight [kg]: 0,41 kg

What's included:
  • 1x Thermostat Coolant
Shipping, returns, warranty

Free UK delivery on orders over £99.00. Tracked standard shipping.

  • Standard delivery: 5–9 business days
  • Order before 5pm — ships the next working day
  • Free returns within 14 days
  • All parts backed by manufacturer warranty

Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.

Frequently Asked Questions

Is this Thermostat Coolant compatible with my car?

This Thermostat Coolant fits AUDI, SEAT vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.

What specifications does this VALEO Thermostat Coolant have?

This VALEO Thermostat Coolant has the following specifications: Opening Temperature [°C]: 87 °C; Weight [kg]: 0,41 kg; Housing Type: 0; Supplementary Article/Supplementary Info: 98. Check the full specifications table above for complete details.

What OE part numbers does this Thermostat Coolant replace?

This Thermostat Coolant replaces OE part numbers: 03L121111AD, 03L121111N, 3L121111AD. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.

How much does a Thermostat Coolant cost?

This VALEO Thermostat Coolant is available for £54.99. Thermostat Coolant prices vary depending on brand, specifications, and vehicle compatibility. VALEO parts offer a balance of quality and value, backed by our 14-day money-back guarantee.

How do I know when to replace my Thermostat Coolant?

Symptoms include engine overheating, heater not producing warm air, temperature gauge fluctuations, or coolant leaks near the thermostat housing.

What tools do I need to replace a Thermostat Coolant?

Tools needed: hose clamp pliers, 8-10mm socket, torque wrench, drain pan, new coolant. Difficulty: Moderate DIY. Safety warning: Never open the cooling system on a warm or hot engine -- coolant is under pressure and causes scalding. Always use the correct coolant specification to avoid corrosion with aluminium engine components.

Can I use this part as a replacement for OE 03L121111AD?

Yes, this VALEO Thermostat Coolant is a direct replacement for OE part number 03L121111AD. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.

Is the VALEO 819727 the same as the VALEO 819846?

No, while both are Thermostat Coolant parts, they are different products. The VALEO 819727 has Opening Temperature [°C]: 87 °C, Weight [kg]: 0,41 kg, Housing Type: 0. The VALEO 819846 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.

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