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Details
| Specification | Value |
|---|---|
| Brand | BorgWarner (Wahler) |
| MPN | 4174.79d |
| Opening Temperature [°C] | 79 °C |
OE/OEM numbers (8)
Where this part fits
Original-fit position for OE 4500823. The red ring marks where this part installs on the vehicle.
What's in the kit
This kit ships with 2 factory-matched components. Each part below is supplied as part of the kit; click any linked MPN to view that component on its own.
| # | Part number | Component | Qty |
|---|---|---|---|
| 1 | 120392 | Gasket, thermostat housing | 1 |
| 2 | 003595 | Gasket, thermostat housing | 1 |
About this product
Sourced from BorgWarner (Wahler), this thermostat coolant (4174.79D) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Opening Temperature [°C]: 79 °C, Supplementary Article/Supplementary Info: 35 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit FIAT, IVECO, OPEL, RENAULT and 2 other makes 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: 4000366, 45 00 823, 477 0246, 482 3211 and 10 more. Matching these numbers confirms a like-for-like replacement with no loss of function. BorgWarner (Wahler) 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Suitable cars
Equivalent products (5)
Thermostat Coolant BorgWarner (Wahler) 4174.79D — compatible car models
| Car models | FIAT: DUCATO Bus (230), DUCATO Platform/Chassis (230), DUCATO Van (230); IVECO: DAILY II Bus, DAILY III Platform/Chassis, DAILY III Van, DAILY II Platform/Chassis, DAILY II Van; OPEL: MOVANO A Bus (X70), MOVANO A Platform/Chassis (X70), MOVANO A Van (X70); RENAULT: MASTER I Bus (T), MASTER II Bus (JD), MASTER II Platform/Chassis (ED/HD/UD), MASTER II Van (FD), MASTER I Platform/Chassis (P), MASTER I Van (T), TRAFIC Bus (T, P, V), TRAFIC Platform/Chassis (T, P, V), TRAFIC Van (T, P, V); RENAULT TRUCKS: MASCOTT Platform/Chassis, MASCOTT Van, MESSENGER Platform/Chassis, MESSENGER Van; VAUXHALL: MOVANO Mk I (A) Chassis/Cab (X70), MOVANO Mk I (A) Combi (X70), MOVANO Mk I (A) Van (X70) |
|---|---|
| Engines | 2.8 TDI 4x4; 2.8 iDTD 4x4; 2.8 TD 4x4; A 40-10 (94139111, 94139131, 94139311, 94139315,...; 29 L 13; 2.8 CNG; 30-10 (15011131, 15011231); 30-10; 2.5 D (JD); 2.5 D (ED, HD, UD0, UD4); 2.5 D (FD); 2.4 D; 2.5 D (JD1A, JD0E, JD0A, JD1E); 2.5 D; 2.5 D (FD0A, FD0E, FD2E, FD3E) (+5 more) |
| Year of manufacture | 1980-2013 |
| Manufacturer article number (MPN) | 4174.79D |
| OE part numbers | 45 00 823, 477 0246, 482 3211, 483 7166, 77 01 042 512, 809 6735, 9 161 123, 9846 3637 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BorgWarner (Wahler) 4174.79d . Opening Temperature [°C]: 79 °C. Supplementary Article/Supplementary Info: 35
- 1x Thermostat Coolant
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- 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 FIAT, IVECO, OPEL, RENAULT, RENAULT TRUCKS and 1 more 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 BorgWarner (Wahler) Thermostat Coolant have?
This BorgWarner (Wahler) Thermostat Coolant has the following specifications: Opening Temperature [°C]: 79 °C; Supplementary Article/Supplementary Info: 35. 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: 45 00 823, 477 0246, 482 3211, 483 7166, 77 01 042 512, 809 6735, 9 161 123, 9846 3637. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Thermostat Coolant cost?
This BorgWarner (Wahler) Thermostat Coolant is available for £25.99. Thermostat Coolant prices vary depending on brand, specifications, and vehicle compatibility. BorgWarner (Wahler) 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 45 00 823?
Yes, this BorgWarner (Wahler) Thermostat Coolant is a direct replacement for OE part number 45 00 823. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
