The K&N 33-2118 is a high-flow replacement air filter for Chevy Camaro 3.8/5.7L (98-07) and Pontiac Firebird 3.8/5.7L (98-02) applications. It uses a cotton gauze panel element, and the manufacturer says it is designed for high air flow while maintaining filtration levels critical to ensure long engine life. Against a stock paper filter, the advantage is reuse: a K&N washable, reusable air filter can be cleaned and re-oiled rather than replaced at every service, which matters if you plan to keep a modified LS1 or 3.8L setup for years. Search terms this matches include K&N 33-2118 washable panel filter, Camaro LS1 drop-in air filter, and F-body cold air intake filter upgrade.
Fitment is a straight drop-in for the factory airbox, so the swap is a DIY job rather than a shop visit. The part is listed for 1998-2002 Chevrolet Camaro Base, Z28 and Z28 SS, and 1998-2002 Pontiac Firebird Base, Formula and Trans Am trims, while the manufacturer's own title extends the Camaro range to 98-07. Model-year coverage varies between listings, so confirm your exact year and engine before ordering. The element measures 16 by 8 by 1 inches, and the manufacturer lists a re-oiling amount of 1.91 oz (56 ml), which is the number to plan around at each cleaning. Keywords: 33-2118 air filter 1998 Camaro, Firebird Trans Am air filter, washable engine air filter F-body.
The manufacturer describes it as a washable, reusable filter. Clean it and re-oil it using the manufacturer's stated re-oiling amount of 1.91 oz (56 ml) instead of buying a new element.
The manufacturer's listing names Chevy Camaro 3.8/5.7L 98-07 and Pontiac Firebird 3.8/5.7L 98-02. Fitment details vary across listings, so confirm your exact year and engine with the manufacturer before ordering.
This is a panel-style drop-in, so no special tools should be needed beyond whatever opens your factory airbox. The manufacturer says it is engineered to fit easily into your factory air box, and installation can be completed in a matter of minutes. Remove the stock element, check that the sealing edges sit flat in the box, and close the lid fully so unfiltered air cannot bypass the element. Check the fit against your airbox before you finish, since gaps there let dirt past the filter.
