K&N 33-2137 Engine Air Filter

K&N 33-2137 Replacement Air Filter

The K&N 33-2137 is a washable, reusable panel air filter built with layered oiled cotton gauze to improve airflow while capturing contaminants. It installs in the factory air box and is a direct replacement for select Lexus LS430 and Lexus GS400 applications.

Key Features

• Panel-style high-performance engine air filter
• Cotton gauze filter media with a flexible frame design
• Pre-oiled filter supplied ready for service
• Washable and reusable for long-term use
• Drop-in replacement for the factory air box
• Backed by a 1,000,000-mile/10-year limited warranty

Product Details

Built for direct-fit service, this K&N replacement air filter uses layered cotton media to balance airflow and filtration in a reusable design. The panel format measures 9.938 in. long, 8.5 in. wide, and 1.063 in. high, with a flexible frame and open top style. The filter arrives pre-oiled and is designed for easy maintenance with 1.25 oz (37 ml) of re-oiling amount when service is required. This part number, K&N 33-2137, is a practical OE-style upgrade for drivers maintaining a Lexus LS430 or Lexus GS400 with a factory air box.

This part cross-references Wix 46464 for the same application.

What It Helps Address

• Restricted airflow from a dirty or clogged engine air filter
• Routine replacement needs for factory air box service
• Frequent filter replacement intervals on daily-driven vehicles
• Loss of filtration performance from a worn disposable filter
• Maintenance costs associated with repeated paper filter replacement

Installation Notes

Install the K&N 33-2137 in the factory air box as a drop-in replacement. Confirm the air filter shape, dimensions, and vehicle fitment before installation. Compatible With 2001-2006 Lexus LS430 and 1998-2000 Lexus GS400. For service, clean and re-oil the filter according to K&N maintenance instructions.

Quality Assurance

K&N backs this reusable air filter with a 1,000,000-mile/10-year limited warranty. The washable cotton gauze construction is engineered for repeated service over the life of the vehicle when maintained properly.