1EA 121 251 B
Radiator – 1EA 121 251 B
Radiator for the VW Group MEB (ID.3 / ID.4 / Q4 e-tron) platform, OE number 1EA 121 251 B. Main group 121 sub-group 251 identifies this as a radiator. Revision index B. Cooling capacity and mounting differ between engine variants on the same platform — confirm against your engine code before ordering.
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Technical specifications
| Part Number | 1EA 121 251 B |
| SKU | AUD-1EA121251B |
| Brand | |
| Category | Radiators |
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3–5 business days. Free on orders over $150.
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Order before 2 PM for next business day delivery.
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Return unused parts within 30 days for a full refund.
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Customer reviews
Verified feedback from Audi owners and independent workshops.
3.7
3 reviews
Claire Krause
December 24, 2025
Better core than the original
Fitted to my 2007 A4 B7. The plastic feels substantial rather than the brittle stuff that cracks at the neck. I flushed the system properly and refilled with the correct G13 before bleeding. Result is no more creeping temperature when towing. Will be back for the other side.
Nora Haugen
September 15, 2025
Straight swap
Bought for a 2008 A3 8P. The plastic feels substantial rather than the brittle stuff that cracks at the neck. Front end off, old one out, this one in over a long Saturday. Result is the gauge sits dead centre now even in traffic on a hot day. Exactly what I needed.
Chidi Krause
April 23, 2025
Seeped from the end tank
Ordered this for my A1 8X after the original gave up at 112k. A weep appeared at the end tank seam after a few heat cycles. Would not order the same one again.