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Details
| Specification | Value |
|---|---|
| Brand | AIC |
| Category | Radiator |
| Core Length [mm] | 650 mm |
| Core Width [mm] | 415 mm |
| Core Depth [mm] | 30 mm |
OE/OEM numbers (10)
Search by this OE number to find compatible parts
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251AR
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251BQ
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251BR
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251CJ
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251E
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251F
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251L
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251P
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251Q
- AUDI / SEAT / SKODA / VAG / VW—1K0 121 251R
Where this part fits
Original-fit position for OE 1K0121251E. The red ring marks where this part installs on the vehicle.
About this product
AIC Radiator (54599) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Core Length [mm]: 650 mm, Core Width [mm]: 415 mm, Core Depth [mm]: 30 mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with AUDI, SEAT, SKODA, VW 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: 002-60-01940, 0026302205, 0110.3130, 040023N and 70 more. Matching these numbers confirms a like-for-like replacement with no loss of function. AIC 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.
Suitable cars
Equivalent products (67)
Show all 67 OE numbers
Radiator AIC 54599 — compatible car models
| Car models | AUDI: A3 (8P1), A3 Sportback (8PA); SEAT: ALTEA (5P1), ALTEA XL (5P5, 5P8), LEON (1P1), TOLEDO III (5P2); SKODA: OCTAVIA II (1Z3), OCTAVIA II Combi (1Z5); VW: CADDY III Box Body/MPV (2KA, 2KH, 2CA, 2CH), CADDY III MPV (2KB, 2KJ, 2CB, 2CJ), EOS (1F7, 1F8), GOLF PLUS V (5M1, 521), GOLF V (1K1), GOLF VI Variant (AJ5), GOLF V Variant (1K5), JETTA III (1K2), TOURAN (1T1, 1T2) |
|---|---|
| Engines | 1.6; 1.4 16V; 1.4; 1.6 FSI |
| Year of manufacture | 2003-2016 |
| Manufacturer article number (MPN) | 54599 |
| OE part numbers | 1K0 121 251AR, 1K0 121 251BQ, 1K0 121 251BR, 1K0 121 251CJ, 1K0 121 251E, 1K0 121 251F, 1K0 121 251L, 1K0 121 251P, 1K0 121 251Q, 1K0 121 251R |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
AIC 54599 Original AIC Quality. Core Depth [mm]: 30 mm. Core Length [mm]: 650 mm. Core Width [mm]: 415 mm
- 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 AUDI, SEAT, SKODA, 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 AIC Radiator have?
This AIC Radiator has the following specifications: Core Length [mm]: 650 mm; Core Width [mm]: 415 mm; Core Depth [mm]: 30 mm. Check the full specifications table above for complete details.
What OE part numbers does this Radiator replace?
This Radiator replaces OE part numbers: 1K0 121 251AR, 1K0 121 251BQ, 1K0 121 251BR, 1K0 121 251CJ, 1K0 121 251E, 1K0 121 251F, 1K0 121 251L, 1K0 121 251P and 2 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Radiator cost?
This AIC Radiator is available for £103.99. Radiator prices vary depending on brand, specifications, and vehicle compatibility. AIC 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 1K0 121 251AR?
Yes, this AIC Radiator is a direct replacement for OE part number 1K0 121 251AR. 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.
