- Shop with confidence: competitive prices, exclusive deals, and delivery perks.
- Need it quickly? We dispatch fast-moving parts daily. Check delivery options.
- Swap or return items within the standard return period with a simple process.
- Questions about fitment or orders? Our support team is ready to help.
Similar products
Customers also bought
Details
| Specification | Value |
|---|---|
| Brand | NISSENS |
| Category | Radiator |
| Inlet Ø [mm] | 32 mm |
| Outlet Ø [mm] | 32 mm |
| Core Length [mm] | 700 mm |
| Core Width [mm] | 322 mm |
| Core Depth [mm] | 32 mm |
OE/OEM numbers (6)
Search by this OE number to find compatible parts
Where this part fits
Original-fit position for OE 321121251AL. The red ring marks where this part installs on the vehicle.
About this product
The NISSENS Radiator (651911) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Supplementary Article/Supplementary Info: 98, Supplementary Article/Info 2: 475, Supplementary Article/Info 2: 536, Inlet Ø [mm]: 32 mm, Outlet Ø [mm]: 32 mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit VW 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: 01103041, 01103078, 060990N, 070188N and 46 more. Matching these numbers confirms a like-for-like replacement with no loss of function. NISSENS 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.
Radiator buying guide
Why replace this part?
The radiator dissipates engine heat by transferring it from coolant to the air. A leaking or clogged radiator causes engine overheating, which can result in catastrophic engine damage including warped heads and blown gaskets.
Signs you need a replacement
- Coolant leaks or puddles under the car
- engine overheating
- discoloured or rusty coolant
- visible corrosion or damage to radiator fins
- steam from under the bonnet
When to replace
Typically lasts 8–10 years. Replace when leaks develop or internal blockages cause overheating. Flush cooling system every 5 years.
About NISSENS
Nissens, founded in 1921 in Horsens, Denmark, is a leading European manufacturer of engine cooling and climate control components. Nissens specialises in radiators, charge air coolers (intercoolers), condensers, compressors, and oil coolers. With products developed and tested to meet OE quality standards, Nissens supplies both the independent aftermarket and original equipment manufacturers. Combining Scandinavian engineering values with over a century of thermal management expertise, Nissens delivers efficient cooling solutions that ensure optimum engine and cabin temperature control.
Suitable cars
Equivalent products (46)
Show all 46 OE numbers
Radiator NISSENS 651911 — compatible car models
| Car models | VW: PASSAT B2 (32B), PASSAT B2 Saloon (32B), PASSAT B2 Variant (33B), SANTANA (32B) |
|---|---|
| Engines | 1.6 |
| Year of manufacture | 1979-1989 |
| Manufacturer article number (MPN) | 651911 |
| OE part numbers | 321.121.251 AJ, 321.121.251 AL, 321.121.251 BJ, 321.121.253 BF, 321.121.253 BL, 321121253L |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
NISSENS 651911 Radiator. Cooling fins material: 1. Core Depth [mm]: 32 mm. Core Length [mm]: 700 mm. Core Width [mm]: 322 mm. Inlet Ø [mm]: 32 mm. Outlet Ø [mm]: 32 mm. Radiator type: 2. Supplementary Article/Info 2: 475
- 1x Radiator
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 Radiator compatible with my car?
This Radiator fits VW 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 NISSENS Radiator have?
This NISSENS Radiator has the following specifications: Supplementary Article/Supplementary Info: 98; Supplementary Article/Info 2: 475; Supplementary Article/Info 2: 536; Inlet Ø [mm]: 32 mm; Outlet Ø [mm]: 32 mm; Cooling fins material: 1. Check the full specifications table above for complete details.
What OE part numbers does this Radiator replace?
This Radiator replaces OE part numbers: 321.121.251 AJ, 321.121.251 AL, 321.121.251 BJ, 321.121.253 BF, 321.121.253 BL, 321121253L. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Radiator cost?
This NISSENS Radiator is available for £49.99. Radiator prices vary depending on brand, specifications, and vehicle compatibility. NISSENS parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Radiator?
Signs of a failing radiator include visible coolant leaks (coloured fluid under the vehicle), engine overheating, coolant level dropping without explanation, or discolouration and corrosion on the radiator fins.
What tools do I need to replace a Radiator?
Tools needed: coolant drain pan, hose clamp pliers, flat-head screwdriver, 8-10mm socket, new coolant (correct type and mix ratio), funnel. Difficulty: Moderate DIY. Safety warning: Never open the radiator cap or coolant expansion tank on a hot engine -- pressurised coolant causes severe burns. Dispose of old antifreeze responsibly as it is toxic to animals.
Can I use this part as a replacement for OE 321.121.251 AJ?
Yes, this NISSENS Radiator is a direct replacement for OE part number 321.121.251 AJ. 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.
