K&N High-Flow Air Filter | Porsche 911 3.0L 1974-1983 H6 | Sold Each
K&N High-Flow Air Filter | Porsche 911 3.0L 1974-1983 H6 | Sold Each
K&N 33-2004 High-Flow Replacement Air Filter drops into the factory airbox on a 3.0-litre impact-bumper 911 and replaces the paper element for the life of the car. No modification, no adapters — it is cut to the original shape and sealed by a moulded urethane frame.
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. It arrives pre-oiled and is washed and re-oiled with a K&N Recharger kit rather than binned — K&N quote up to 50,000 miles between cleanings under normal highway driving. Be sparing with the oil at service time.
Key Benefits:
- Designed to flow up to 50% more air than a disposable paper filter
- 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
- Drop-in fit to the original airbox, no modification required
- Backed by K&N's 10-Year / Million Mile Limited Warranty
Compatible Vehicles:
- Porsche 911 H6-3.0L F/I — 1974–1983
Note: K&N lists 33-2004 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, apply it sparingly, and let the element dry fully before refitting.
Installation Instructions:
Ten minutes with the airbox lid, and the last air filter the car buys.
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