Engine Air Filter Overview

The Wix WA10403 engine air filter is a panel-style replacement built for BMW applications that call for OE part number 13718616909. It is a direct-fit air filter for normal commuting, stop-and-go traffic, and harsher driving conditions where engine air cleanliness matters.

Key Features

• Panel-style engine air filter for the air intake system
• Enhanced cellulose media with phenolic resin treatment for added moisture resistance
• 30% more media than OES filters for increased filtration surface area
• High-tear strength polyurethane seal for temperature resistance where applicable
• Laboratory tested to ISO 5011 standards with at least 99.5% efficiency based on Wix 42389

Detailed Description

Wix WA10403 is engineered as a premium engine air filter for BMW 335i GT xDrive, 435i xDrive, 435i xDrive Gran Coupe, M235i, and M235i xDrive models. The closed-top panel design and cellulose media support consistent airflow management while helping trap airborne contaminants before they reach the engine. This part cross-references BMW 13718616909 for the same application.

As an OE-style replacement, the WA10403 follows the fitment and service expectations of factory air filter intervals. The Wix WA10403 is a practical choice for drivers replacing a worn or restricted filter on BMW 335i GT xDrive and related 2016 models.

What It Helps Address

• Restricted airflow from a dirty or loaded engine air filter
• Reduced filtration performance in dusty or stop-and-go driving
• Moisture-related media breakdown in demanding conditions
• Service replacement for OE air filter intervals

Installation Notes and Tips

Verify the existing filter dimensions and OE part number before installation. This filter is listed for 2016 BMW 335i GT xDrive, 435i xDrive, 435i xDrive Gran Coupe, M235i, and M235i xDrive applications with OE part number 13718616909. Compare the housing shape and sealing surface to the removed filter to confirm proper fit.

Quality Assurance

Wix states that this filter is laboratory tested to ISO 5011 standards and is recommended for OEM air filter change intervals. The WA10403 uses enhanced cellulose media and a polyurethane seal where applicable to support durability in temperature extremes.