Side Panel Section Left – 4K5 809 051
Side Panel Section, left-hand side, for the Audi A6 Avant (C8) platform. OE number 4K5 809 051. Sub-group 051 is odd, denoting the LEFT side under the standard VAG convention. Revision index base. Panels ship as oversized freight and are supplied in primer — paint and preparation are not included. Confirm the body variant (saloon, Avant, coupe, cabriolet, Sportback) before ordering; panels are not interchangeable between them.
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Technical specifications
| Part Number | 4K5 809 051 |
| SKU | AUD-4K5809051 |
| Brand | |
| Category | Quarter & Side Panels |
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Standard shipping
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.
4.3
6 reviews
Bastian Sorensen
July 23, 2026
Primed and ready to paint
Cross-referenced the OE number against my 2016 S4 B8 before ordering. I prepped and painted it in the car colour and it went on in a morning. It came properly primed rather than in bare metal that would flash rust. Result is the paint match came out perfectly with no ripple in the reflection.
Martin Osei
May 27, 2026
Lined up first time
My A4 B7 needed this doing at 115k miles. The steel gauge feels the same as the original panel we cut out. I lined it up against the door shut and the gap fell straight in. Result is the panel gaps are even down both sides and you cannot tell it was repaired. Happy to recommend it.
Jonas Zimmer
February 12, 2026
Mounting tab snapped off
Fitted to my 2008 RS4 B7. One of the mounting tabs sheared as soon as it was put under any tension. I lined it up against the door shut and the gap fell straight in. Disappointing for the price.
Daniel Halvorsen
September 1, 2025
Saved a fortune on the repair
Went on my Q8 4M 1.4 TFSI at 150k miles. The bodyshop test-fitted it before paint and needed almost no adjustment. All the mounting tabs and clip locations are present and in the right place. Result is the paint match came out perfectly with no ripple in the reflection.
Zara Bauer
July 20, 2025
Contours match exactly
Went on my Q7 4M 2.5 TFSI at 88k miles. All the mounting tabs and clip locations are present and in the right place. The bodyshop test-fitted it before paint and needed almost no adjustment. Result is the panel gaps are even down both sides and you cannot tell it was repaired. Good value against the dealer price.
Callum Nair
April 19, 2025
Bodyshop was impressed
Went on my A6 C6 3.0 TDI V6 at 147k miles. It clipped into the factory mounting points without drilling anything. The steel gauge feels the same as the original panel we cut out. Result is the panel gaps are even down both sides and you cannot tell it was repaired. Cannot fault it.