Radiator – 5Q0 121 251 GR
Radiator for the VW Group MQB (Golf 7 / A3 8V) platform, OE number 5Q0 121 251 GR. Main group 121 sub-group 251 identifies this as a radiator. Revision index GR. 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 | 5Q0 121 251 GR |
| SKU | AUD-5Q0121251GR |
| 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.
3.5
4 reviews
Viktor Larsen
May 5, 2026
Straight swap
Replacement for my 2017 A1 8X 2.5 TFSI. The core is thicker than the unit it replaced and the fin density is noticeably higher. I flushed the system properly and refilled with the correct G13 before bleeding. Result is intake temps dropped noticeably on a long motorway pull.
Anders Okonkwo
January 12, 2026
Solved my overheating
Cross-referenced the OE number against my 2006 A6 C6 before ordering. I bled it through the proper procedure and it has held level ever since. The core is thicker than the unit it replaced and the fin density is noticeably higher. Result is intake temps dropped noticeably on a long motorway pull.
Yusuf Mensah
July 31, 2025
Seeped from the end tank
Replacement for my 2008 RS4 B7 2.0 TDI. A weep appeared at the end tank seam after a few heat cycles. Would not order the same one again.
Bastian Castellanos
May 18, 2025
Temps back to normal
Fitted to my 2019 S3 8V. I flushed the system properly and refilled with the correct G13 before bleeding. The core is thicker than the unit it replaced and the fin density is noticeably higher. Result is the coolant level has not moved in four months. Will be back for the other side.