Charge Air Cooler – 4K0 145 804 M
Charge Air Cooler for the Audi A6 / A7 (C8) platform, OE number 4K0 145 804 M. Main group 145 sub-group 804 identifies this as a charge air cooler. Revision index M. Cooling capacity and mounting differ between engine variants on the same platform — confirm against your engine code before ordering.
This part is in our catalogue but not yet priced online. Send us the part number and your VIN and we will confirm price, availability, and fitment.
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Technical specifications
| Part Number | 4K0 145 804 M |
| SKU | AUD-4K0145804M |
| Brand | |
| Category | Intercoolers |
Shipping & returns
Standard shipping
3–5 business days. Free on orders over $150.
Express delivery
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.
4.4
5 reviews
Niall Lindqvist
August 7, 2026
Temps back to normal
Went on my A4 B7 3.0 TFSI V6 at 136k miles. 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 coolant level has not moved in four months. Would order again without hesitation.
Martin Delgado
June 17, 2026
Holds pressure beautifully
Bought for a 2018 Q7 4M. I pressure tested it to 1.4 bar before fitting and it held without a drop. I bled it through the proper procedure and it has held level ever since. Result is intake temps dropped noticeably on a long motorway pull.
Laura Ferreira
March 16, 2026
Good rad, mounting tabs tight
Fitted to my 2010 Q5 8R. The transmission cooler lines threaded straight in with no adapters. The end tanks are properly crimped with clean seams all the way round. On balance the gauge sits dead centre now even in traffic on a hot day. Worth buying, just go in with your eyes open.
Hannah Petrov
February 9, 2026
Better core than the original
Went on my Q3 8U 2.5 TFSI at 121k miles. I pressure tested it to 1.4 bar before fitting and it held without a drop. All the mounting points and hose stubs lined up without any persuasion. Result is the gauge sits dead centre now even in traffic on a hot day.
Nora Kaur
August 25, 2025
Perfect fit, no modification
Bought for a 2019 Q5 FY. 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 the coolant level has not moved in four months. Would order again without hesitation.