K&N E-1590 Engine Air Filter

Engine Air Filter Overview

K&N E-1590 is a high-performance engine air filter built with layered, oiled cotton gauze to improve airflow while capturing contaminants. It is a washable, reusable drop-in replacement that installs in the factory air box and is backed by K&N’s 10-Year/Million Mile Limited Warranty.

Key Features

• Round cotton gauze air filter with a flexible frame
• Pre-oiled media for ready-to-use service
• Washable and reusable for long service life
• Drop-in design for factory air box installation
• Engineered to support improved airflow and filtration

Detailed Description

The K&N E-1590 replacement air filter uses layered oiled cotton media to balance airflow and contaminant capture in a reusable design. Its round shape, open top style, and flexible frame support a direct-fit installation in the factory air box. This filter is a strong match for classic Pontiac Firebird, GTO, and LeMans applications, as well as selected Oldsmobile performance and Ram Air setups. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

K&N E-1590 is intended for enthusiasts maintaining original-style induction systems while upgrading filtration serviceability. The pre-oiled construction and washable media reduce the need for frequent replacement, and the reusable design is engineered for long-term use. Part number E-1590 is also referenced in interchange listings for several aftermarket applications.

What It Is Used For

• Restricted airflow caused by a dirty or clogged air filter
• Routine replacement of a factory-style engine air filter
• Maintaining filtration in Ram Air and hood scoop setups
• Supporting consistent intake performance in classic muscle car applications
• Replacing a worn disposable filter with a washable unit

Installation Notes and Tips

Install the E-1590 in the factory air box and verify the vehicle-specific Ram Air, hood scoop, or 4-barrel carburetor configuration listed in the fitment data. Confirm the round filter dimensions and housing clearance before installation. Fitment includes 1968-1979 Pontiac Firebird, GTO, LeMans, Grand Prix, Bonneville, Grand Safari, Ventura, and selected Oldsmobile 442, Cutlass, Delta 88, F85, 98, Custom Cruiser, Omega, and Vista Cruiser applications.

Quality Assurance

K&N backs this filter with a 10-Year/Million Mile Limited Warranty. The E-1590 is built as a washable, reusable performance filter for long service life, and K&N’s product design focuses on airflow and contaminant capture for factory air box applications.