Engine Air Filter – 8W0 133 843 C
Engine Air Filter for Audi A4 (B9) / A5 / Q5 2.0T, OE number 8W0 133 843 C. Main group 133 sub-group 843 identifies this as an engine intake filter. Revision index C. Replace at the interval in your service schedule — a restricted intake filter costs measurable power and fuel economy.
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Technical specifications
| Part Number | 8W0 133 843 C |
| SKU | AUD-8W0133843C |
| Brand | |
| Category | Air Filters |
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Customer reviews
Verified feedback from Audi owners and independent workshops.
4.8
8 reviews
Hugo Novak
July 29, 2026
Genuine quality for less (A1 8X)
Cross-referenced the OE number against my 2018 A1 8X before ordering. I changed it with the oil at the same service interval. The rubber seal is supple and sat in its groove without coaxing. Result is no leaks at all after several hundred miles. Delivery was quick too.
Niall Ferreira
June 27, 2026
No leaks, no fuss
Cross-referenced the OE number against my 2008 A4 B8 before ordering. The media feels dense and the end caps are properly bonded rather than glued on thin. I changed it with the oil at the same service interval. Result is throttle response feels crisper than it did on the clogged original. Happy to recommend it.
Sofia Haugen
March 13, 2026
Exactly what the service needed
Fitted to my 2018 Q3 8U. The pleat count is visibly higher than the supermarket filter I had been using. It dropped straight into the housing and the cap torqued to spec first go. Result is the musty smell from the vents has completely gone. Cannot fault it.
Zara Hoffmann
September 27, 2025
Right filter every time
Replacement for my 2004 A3 8P 1.8 TFSI. The pleat count is visibly higher than the supermarket filter I had been using. The old one practically fell apart coming out; this went in cleanly. Result is throttle response feels crisper than it did on the clogged original. Good value against the dealer price.
Priya Haugen
July 12, 2025
Correct fit, sealed properly
Second one of these I have bought, this time for the Q7 4L. The pleat count is visibly higher than the supermarket filter I had been using. The old one practically fell apart coming out; this went in cleanly. Result is no leaks at all after several hundred miles.
Niall Okonkwo
May 2, 2025
Genuine quality for less
Bought for a 2014 A4 B8.5. Dimensions matched the outgoing filter to the millimetre. I changed it with the oil at the same service interval. Result is throttle response feels crisper than it did on the clogged original.
Viktor Bianchi
March 24, 2025
Good pleat count
Second one of these I have bought, this time for the Q3 8U. I pre-oiled the seal before fitting and there has not been a drop since. The rubber seal is supple and sat in its groove without coaxing. Result is oil pressure comes up as quickly on a cold start as it always has.
Viktor Fitzgerald
March 7, 2025
Correct fit, sealed properly (A1 8X)
Went on my A1 8X 2.0 TDI at 120k miles. The rubber seal is supple and sat in its groove without coaxing. I changed it with the oil at the same service interval. Result is oil pressure comes up as quickly on a cold start as it always has. Will be back for the other side.