K&N High-Flow Air Filter | Porsche 928 1978-1995 | Sold Each
K&N High-Flow Air Filter | Porsche 928 1978-1995 | Sold Each
K&N 33-2591 High-Flow Replacement Air Filter is the drop-in element for the 928, and one part number covers the whole production run. It fits the original airbox with no modification.
Oiled cotton, the original high-flow media. K&N layers oiled cotton gauze between epoxy-coated aluminium mesh, rated to flow up to 50% more air than a disposable paper filter and tested in an ISO 5011 laboratory for filtration efficiency. Supplied pre-oiled; washed and re-oiled with a K&N Recharger kit rather than replaced, with up to 50,000 miles between cleanings under normal driving. Apply oil sparingly at service time.
Key Benefits:
- Designed to flow up to 50% more air than a disposable paper filter
- One part number spans 1978 to 1995 — the entire 928 run
- Layered, oiled cotton gauze media between epoxy-coated aluminium mesh
- ISO 5011 laboratory tested for filtration efficiency
- Washable and reusable — up to 50,000 miles between cleanings
- Backed by K&N's 10-Year / Million Mile Limited Warranty
Compatible Vehicles:
- Porsche 928 — 1978–1995
Note: K&N lists 33-2591 without a multi-filter annotation — it is supplied as a single filter. Clean and re-oil with a K&N Recharger kit; use K&N air filter oil only and let the element dry fully before refitting.
Installation Instructions:
Parts availability matters on a 928. This is one you buy once.
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