Opparts XA5603 Engine Air Filter - Main

Engine Air Filter for Select GM Applications

The Opparts ECOGARD XA5603 engine air filter is built for select Chevrolet, Buick, and Pontiac applications that require a flexible panel-style filter with a precise fit. It is installation tested for correct fit, form, and function to support straightforward replacement and consistent airflow management.

Compatible with 2006-2011 Chevrolet Impala, Main; 2008-2009 Buick Allure, Main; 2008-2009 Buick LaCrosse, Main; 2005-2008 Pontiac Grand Prix, Main; and 2006-2007 Chevrolet Monte Carlo, Main.

Key Features

• Brand: Opparts ECOGARD
• Part number: XA5603
• Engine air filter for air and fuel delivery service
• Flexible panel shape for the listed applications
• Height: 1.97 in.
• Side A length: 9.37 in.
• Side B length: 8.90 in.
• Non-reusable design
• Installation tested for fit, form, and function

Product Details

The ECOGARD line focuses on replacement filters that match the vehicle’s original fit requirements. This XA5603 engine air filter is sized for the specified GM platforms and uses a flexible panel construction to help it seat correctly in the airbox. For buyers searching for an engine air filter for 2006-2011 Chevrolet Impala, 2005-2008 Pontiac Grand Prix, or 2008-2009 Buick LaCrosse, this part number provides a direct reference point for service and catalog lookup. This part cross-references Baldwin PA4178 for the same application.

What It Helps Address

• Restricted airflow from a dirty or clogged engine air filter
• Dust and debris entering the intake tract
• Reduced filtration performance during routine maintenance intervals
• Poor fitment caused by an incorrect filter size or shape
• Service delays when replacing the air filter on listed GM models

Installation Notes and Tips

Verify the airbox dimensions and compare the old filter to the XA5603 before installation. Confirm the vehicle application by year, make, model, and Main position, especially on 2006-2011 Chevrolet Impala and other listed GM vehicles. Inspect the airbox sealing surfaces and replace the filter if the media is damaged, heavily soiled, or no longer sealing properly.

Quality Assurance

ECOGARD air filters are installation tested to confirm correct fit, form, and function before release. That validation supports trouble-free installation and dependable performance in the specified applications.