K&N Engineering 57-9011 Performance Air Intake Kit for 1998-2000 Lexus GS400 4.0L V8

A high-density polyethylene (HDPE) rotationally-molded tube helps increase the volume of airflow to your engine, and provides a guaranteed increase in horsepower and torque. These systems are paired with a washable, reusable High-Flow Air Filter featuring oiled cotton filter media. The oversized, conical design allows you to go up to 100,000 miles between filter services under normal highway driving conditions. A custom heat shield helps protect intake air from the high temperature of your engine bay, and the entire system can typically be installed in less than 90 minutes. Some intakes are not legal for sale or use on any pollution controlled motor vehicle in California. See the product specifications for CARB status on each part for a specific vehicle. K&N's roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque, and are protected by the K&N No-Hassle Lifetime Limited Warranty. Associated products: RC-4630DK Air Filter Wrap, RU-4630 Universal Clamp-On Air Filter, 99-5000 Filter Care Service Kit Aerosol

• K&N Million Mile Limited Warranty
• Will not void vehicle warranty

Improve airflow to your engine with the K&N Engineering 57-9011 Performance Air Intake Kit, designed for the 1998-2000 Lexus GS400 equipped with the 4.0L V8 engine. The system uses a high-density polyethylene rotationally molded intake tube to increase airflow volume and is engineered to provide measurable gains in horsepower and torque. Its smooth, high-flow design supports improved engine breathing while maintaining a practical installation process that can typically be completed in less than 90 minutes.

The kit includes an oversized conical K&N High-Flow Air Filter with washable and reusable oiled cotton filter media. Under normal highway driving conditions, the filter can provide service intervals of up to 100,000 miles, reducing maintenance requirements compared with disposable filters. A custom heat shield helps isolate the intake from hot engine-bay air, supporting a cooler, denser air charge for consistent performance. K&N backs the system with a Million Mile Limited Warranty and confirms that installation will not void the vehicle warranty.

Fitment: This intake kit fits the 1998, 1999, and 2000 Lexus GS400 with the 4.0L V8 engine. The system is EPA compliant and carries California Air Resources Board Executive Order D-269-18. California emissions requirements can change, so verify applicable regulations before installation. Associated products include the RC-4630DK Air Filter Wrap, RU-4630 Universal Clamp-On Air Filter, and 99-5000 Filter Care Service Kit Aerosol.

What's Included: Rotationally molded HDPE intake tube, K&N washable high-flow air filter, custom heat shield, mounting hardware, and installation components.

Features:

• High-flow rotationally molded intake tube: Increases airflow volume to the 4.0L V8 engine and supports improved horsepower and torque.
• Washable reusable air filter: Uses oiled cotton filter media and can provide service intervals of up to 100,000 miles under normal highway driving conditions.
• Custom heat shield: Helps protect incoming air from high engine-bay temperatures for more consistent intake performance.
• Easy installation and warranty protection: Typically installs in less than 90 minutes and is covered by the K&N Million Mile Limited Warranty without voiding the vehicle warranty.

Fitments:
1998 Lexus GS400 Base
1999 Lexus GS400 Base
2000 Lexus GS400 Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Eo Number: D-269-18
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1