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Details
| Specification | Value |
|---|---|
| Brand | VALEO |
| Opening Temperature [°C] | 88 °C |
| Weight [kg] | 0.1 kg |
| Pipe Diameter [mm] | 53.9 mm |
OE numbers (19)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—0012035875
- MERCEDES-BENZ—12035875
- OPEL—1338018
- NISSAN—21200-78501
- NISSAN—21200-78503
- NISSAN—21200-78505
- NISSAN—21200-78506
- NISSAN—21200-78515
- VAUXHALL—2898688
- SUBARU—317534302
- FIAT / LANCIA—4114132
- FIAT / LANCIA—4154312
- CHRYSLER—52028185
- CHRYSLER—52028185AB
- JEEP—8350 1426
- JEEP—8350 4378
- FORD—86AU8575B1A
- JOHN DEERE—AT22963
- JOHN DEERE—RE33705
Where this part fits
Original-fit position for OE 1338018. The red ring marks where this part installs on the vehicle.
About this product
VALEO Thermostat Coolant (819851) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Opening Temperature [°C]: 88 °C, Weight [kg]: 0, Steel kg, Pipe Diameter [mm]: 53, Stainless Steel mm, Housing Type: 50, Supplementary Article/Supplementary Info: 98 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with JEEP, OPEL, VAUXHALL vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 0012035875, 107083, 107087, 107087309 and 86 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 (66)
Show all 66 OE numbers
Thermostat Coolant VALEO 819851 — compatible car models
| Car models | JEEP: CHEROKEE (XJ), GRAND CHEROKEE II (WJ, WG), GRAND CHEROKEE I (ZJ, ZG), WRANGLER II (TJ), WRANGLER I (YJ, SJ); OPEL: ADMIRAL B, ASCONA A (81, 86, 87, 88), ASCONA A Voyage (84, 89), ASCONA B (81, 86, 87, 88), ASCONA C Hatchback (J82), ASCONA C (J82), GT, KADETT B Coupe, KADETT C, KADETT C City (+15 more) |
|---|---|
| Engines | 2.5; 4.0 4x4; 4.0 i 4x4 (Z); 2.4; 2.8; 1.6 N; 1.6 (F68, M68); 1.6 (F11, M11, F68, M68); 1.9; 1.6 S; 1.6; 1.7; 1.7 S |
| Year of manufacture | 1965-2008 |
| Manufacturer article number (MPN) | 819851 |
| OE part numbers | 0012035875, 12035875, 1338018, 21200-78501, 21200-78503, 21200-78505, 21200-78506, 21200-78515, 2898688, 317534302, 4114132, 4154312, 52028185, 52028185AB, 8350 1426, 8350 4378, 86AU8575B1A, AT22963, RE33705 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
VALEO 819851 . Housing Type: 50. Opening Temperature [°C]: 88 °C. Pipe Diameter [mm]: 53,9 mm. Supplementary Article/Supplementary Info: 98. Weight [kg]: 0,1 kg
- 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 JEEP, OPEL, VAUXHALL 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]: 88 °C; Weight [kg]: 0,1 kg; Pipe Diameter [mm]: 53,9 mm; Housing Type: 50; 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: 0012035875, 12035875, 1338018, 21200-78501, 21200-78503, 21200-78505, 21200-78506, 21200-78515 and 11 more. 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 £12.99. 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 0012035875?
Yes, this VALEO Thermostat Coolant is a direct replacement for OE part number 0012035875. 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 819851 the same as the VALEO 819846?
No, while both are Thermostat Coolant parts, they are different products. The VALEO 819851 has Opening Temperature [°C]: 88 °C, Weight [kg]: 0,1 kg, Pipe Diameter [mm]: 53,9 mm. 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.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
